tint: const eval of fract

Bug: tint:1581
Change-Id: I14207080b14e45e7520f50230c85cd902f25dc71
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/113943
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/src/tint/intrinsics.def b/src/tint/intrinsics.def
index 3a2219a..db2dd09 100644
--- a/src/tint/intrinsics.def
+++ b/src/tint/intrinsics.def
@@ -494,8 +494,8 @@
 @const fn floor<N: num, T: fa_f32_f16>(@test_value(1.5) vec<N, T>) -> vec<N, T>
 @const fn fma<T: fa_f32_f16>(T, T, T) -> T
 @const fn fma<N: num, T: fa_f32_f16>(vec<N, T>, vec<N, T>, vec<N, T>) -> vec<N, T>
-fn fract<T: f32_f16>(T) -> T
-fn fract<N: num, T: f32_f16>(vec<N, T>) -> vec<N, T>
+@const fn fract<T: fa_f32_f16>(@test_value(1.25) T) -> T
+@const fn fract<N: num, T: fa_f32_f16>(@test_value(1.25) vec<N, T>) -> vec<N, T>
 @const fn frexp<T: fa_f32_f16>(T) -> __frexp_result<T>
 @const fn frexp<N: num, T: fa_f32_f16>(vec<N, T>) -> __frexp_result_vec<N, T>
 @stage("fragment") fn fwidth(f32) -> f32
diff --git a/src/tint/resolver/const_eval.cc b/src/tint/resolver/const_eval.cc
index 115082c..5d13abf 100644
--- a/src/tint/resolver/const_eval.cc
+++ b/src/tint/resolver/const_eval.cc
@@ -2680,6 +2680,20 @@
     return TransformElements(builder, ty, transform, args[0], args[1], args[2]);
 }
 
+ConstEval::Result ConstEval::fract(const type::Type* ty,
+                                   utils::VectorRef<const constant::Constant*> args,
+                                   const Source& source) {
+    auto transform = [&](const constant::Constant* c1) {
+        auto create = [&](auto e) -> ImplResult {
+            using NumberT = decltype(e);
+            auto r = e - std::floor(e);
+            return CreateElement(builder, source, c1->Type(), NumberT{r});
+        };
+        return Dispatch_fa_f32_f16(create, c1);
+    };
+    return TransformElements(builder, ty, transform, args[0]);
+}
+
 ConstEval::Result ConstEval::frexp(const type::Type* ty,
                                    utils::VectorRef<const constant::Constant*> args,
                                    const Source& source) {
diff --git a/src/tint/resolver/const_eval.h b/src/tint/resolver/const_eval.h
index 20b5e77..6caac07 100644
--- a/src/tint/resolver/const_eval.h
+++ b/src/tint/resolver/const_eval.h
@@ -689,6 +689,15 @@
                utils::VectorRef<const constant::Constant*> args,
                const Source& source);
 
+    /// fract builtin
+    /// @param ty the expression type
+    /// @param args the input arguments
+    /// @param source the source location
+    /// @return the result value, or null if the value cannot be calculated
+    Result fract(const type::Type* ty,
+                 utils::VectorRef<const constant::Constant*> args,
+                 const Source& source);
+
     /// frexp builtin
     /// @param ty the expression type
     /// @param args the input arguments
diff --git a/src/tint/resolver/const_eval_builtin_test.cc b/src/tint/resolver/const_eval_builtin_test.cc
index 82c6d38..25adcef 100644
--- a/src/tint/resolver/const_eval_builtin_test.cc
+++ b/src/tint/resolver/const_eval_builtin_test.cc
@@ -1173,6 +1173,38 @@
                                               FmaCases<f16>()))));
 
 template <typename T>
+std::vector<Case> FractCases() {
+    auto r = std::vector<Case>{
+        C({T(0)}, T(0)),
+        C({T(0.1)}, T(0.1)),
+        C({T(-0.1)}, T(0.9)),
+        C({T(0.0000001)}, T(0.0000001)),
+        C({T(-0.0000001)}, T(0.9999999)),
+        C({T(12.34567)}, T(0.34567)).FloatComp(0.002),
+        C({T(-12.34567)}, T(0.65433)).FloatComp(0.002),
+        C({T::Lowest()}, T(0)),
+        C({T::Highest()}, T(0)),
+        // Vector tests
+        C({Vec(T(0.1), T(-0.1), T(-0.0000001))}, Vec(T(0.1), T(0.9), T(0.9999999))),
+    };
+    // Note: Valid results are in the closed interval [0, 1.0]. For example, if e is a very small
+    // negative number, then fract(e) may be 1.0.
+    ConcatIntoIf<!std::is_same_v<T, f16>>(  //
+        r, std::vector<Case>{
+               C({T(-0.000000000000000001)}, T(1)),
+           });
+
+    return r;
+}
+INSTANTIATE_TEST_SUITE_P(  //
+    Fract,
+    ResolverConstEvalBuiltinTest,
+    testing::Combine(testing::Values(sem::BuiltinType::kFract),
+                     testing::ValuesIn(Concat(FractCases<AFloat>(),  //
+                                              FractCases<f32>(),
+                                              FractCases<f16>()))));
+
+template <typename T>
 std::vector<Case> FrexpCases() {
     using F = T;                                                         // fract type
     using E = std::conditional_t<std::is_same_v<T, AFloat>, AInt, i32>;  // exp type
diff --git a/src/tint/resolver/intrinsic_table.inl b/src/tint/resolver/intrinsic_table.inl
index fd2822b..926f6b5 100644
--- a/src/tint/resolver/intrinsic_table.inl
+++ b/src/tint/resolver/intrinsic_table.inl
@@ -12461,24 +12461,24 @@
     /* num parameters */ 1,
     /* num template types */ 1,
     /* num template numbers */ 0,
-    /* template types */ &kTemplateTypes[26],
+    /* template types */ &kTemplateTypes[23],
     /* template numbers */ &kTemplateNumbers[10],
     /* parameters */ &kParameters[856],
     /* return matcher indices */ &kMatcherIndices[3],
     /* flags */ OverloadFlags(OverloadFlag::kIsBuiltin, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline),
-    /* const eval */ nullptr,
+    /* const eval */ &ConstEval::fract,
   },
   {
     /* [348] */
     /* num parameters */ 1,
     /* num template types */ 1,
     /* num template numbers */ 1,
-    /* template types */ &kTemplateTypes[26],
+    /* template types */ &kTemplateTypes[23],
     /* template numbers */ &kTemplateNumbers[4],
     /* parameters */ &kParameters[857],
     /* return matcher indices */ &kMatcherIndices[30],
     /* flags */ OverloadFlags(OverloadFlag::kIsBuiltin, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline),
-    /* const eval */ nullptr,
+    /* const eval */ &ConstEval::fract,
   },
   {
     /* [349] */
@@ -14203,8 +14203,8 @@
   },
   {
     /* [39] */
-    /* fn fract<T : f32_f16>(T) -> T */
-    /* fn fract<N : num, T : f32_f16>(vec<N, T>) -> vec<N, T> */
+    /* fn fract<T : fa_f32_f16>(@test_value(1.25) T) -> T */
+    /* fn fract<N : num, T : fa_f32_f16>(@test_value(1.25) vec<N, T>) -> vec<N, T> */
     /* num overloads */ 2,
     /* overloads */ &kOverloads[347],
   },
diff --git a/test/tint/builtins/gen/literal/fract/181aa9.wgsl b/test/tint/builtins/gen/literal/fract/181aa9.wgsl
index 835b78a..d439e1b 100644
--- a/test/tint/builtins/gen/literal/fract/181aa9.wgsl
+++ b/test/tint/builtins/gen/literal/fract/181aa9.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(vec<2, f16>) -> vec<2, f16>
 fn fract_181aa9() {
-  var res: vec2<f16> = fract(vec2<f16>(1.h));
+  var res: vec2<f16> = fract(vec2<f16>(1.25h));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.dxc.hlsl
index e602eda..c888c8f 100644
--- a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_181aa9() {
-  vector<float16_t, 2> res = frac((float16_t(1.0h)).xx);
+  vector<float16_t, 2> res = (float16_t(0.25h)).xx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.glsl
index c837c60..4404f23 100644
--- a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_181aa9() {
-  f16vec2 res = fract(f16vec2(1.0hf));
+  f16vec2 res = f16vec2(0.25hf);
 }
 
 vec4 vertex_main() {
@@ -23,7 +23,7 @@
 precision mediump float;
 
 void fract_181aa9() {
-  f16vec2 res = fract(f16vec2(1.0hf));
+  f16vec2 res = f16vec2(0.25hf);
 }
 
 void fragment_main() {
@@ -38,7 +38,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_181aa9() {
-  f16vec2 res = fract(f16vec2(1.0hf));
+  f16vec2 res = f16vec2(0.25hf);
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.msl
index c9a1ea8..b915124 100644
--- a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_181aa9() {
-  half2 res = fract(half2(1.0h));
+  half2 res = half2(0.25h);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.spvasm
index 9f1b31c..e489898 100644
--- a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.spvasm
@@ -1,14 +1,13 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 36
+; Bound: 34
 ; Schema: 0
                OpCapability Shader
                OpCapability Float16
                OpCapability UniformAndStorageBuffer16BitAccess
                OpCapability StorageBuffer16BitAccess
                OpCapability StorageInputOutput16
-         %16 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -37,38 +36,37 @@
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
      %v2half = OpTypeVector %half 2
-%half_0x1p_0 = OpConstant %half 0x1p+0
-         %18 = OpConstantComposite %v2half %half_0x1p_0 %half_0x1p_0
+%half_0x1pn2 = OpConstant %half 0x1p-2
+         %16 = OpConstantComposite %v2half %half_0x1pn2 %half_0x1pn2
 %_ptr_Function_v2half = OpTypePointer Function %v2half
-         %21 = OpConstantNull %v2half
-         %22 = OpTypeFunction %v4float
+         %19 = OpConstantNull %v2half
+         %20 = OpTypeFunction %v4float
     %float_1 = OpConstant %float 1
 %fract_181aa9 = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v2half Function %21
-         %13 = OpExtInst %v2half %16 Fract %18
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v2half Function %19
+               OpStore %res %16
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %22
-         %24 = OpLabel
-         %25 = OpFunctionCall %void %fract_181aa9
+%vertex_main_inner = OpFunction %v4float None %20
+         %22 = OpLabel
+         %23 = OpFunctionCall %void %fract_181aa9
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %27 = OpLabel
-         %28 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %28
+         %25 = OpLabel
+         %26 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %26
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %31 = OpLabel
-         %32 = OpFunctionCall %void %fract_181aa9
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_181aa9
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %34 = OpLabel
-         %35 = OpFunctionCall %void %fract_181aa9
+         %32 = OpLabel
+         %33 = OpFunctionCall %void %fract_181aa9
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.wgsl
index c67b415..86ca468 100644
--- a/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/181aa9.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_181aa9() {
-  var res : vec2<f16> = fract(vec2<f16>(1.0h));
+  var res : vec2<f16> = fract(vec2<f16>(1.25h));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl
new file mode 100644
index 0000000..27effad
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl
@@ -0,0 +1,43 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(fa) -> fa
+fn fract_2eddfe() {
+  var res = fract(1.25);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_2eddfe();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_2eddfe();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_2eddfe();
+}
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..c27230f
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_2eddfe();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_2eddfe();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_2eddfe();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..c27230f
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_2eddfe();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_2eddfe();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_2eddfe();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.glsl
new file mode 100644
index 0000000..a8d9c20
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+vec4 vertex_main() {
+  fract_2eddfe();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+void fragment_main() {
+  fract_2eddfe();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+void compute_main() {
+  fract_2eddfe();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.msl
new file mode 100644
index 0000000..f9a855f
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_2eddfe();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_2eddfe();
+  return;
+}
+
+kernel void compute_main() {
+  fract_2eddfe();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.spvasm
new file mode 100644
index 0000000..0355f37
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.spvasm
@@ -0,0 +1,64 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 30
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_2eddfe "fract_2eddfe"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+ %float_0_25 = OpConstant %float 0.25
+%_ptr_Function_float = OpTypePointer Function %float
+         %16 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_2eddfe = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_float Function %8
+               OpStore %res %float_0_25
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %fract_2eddfe
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %fract_2eddfe
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_2eddfe
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.wgsl
new file mode 100644
index 0000000..7d3e6ce
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/2eddfe.wgsl.expected.wgsl
@@ -0,0 +1,19 @@
+fn fract_2eddfe() {
+  var res = fract(1.25);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_2eddfe();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_2eddfe();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_2eddfe();
+}
diff --git a/test/tint/builtins/gen/literal/fract/498c77.wgsl b/test/tint/builtins/gen/literal/fract/498c77.wgsl
index 13cadd7..83e2bdc 100644
--- a/test/tint/builtins/gen/literal/fract/498c77.wgsl
+++ b/test/tint/builtins/gen/literal/fract/498c77.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(vec<4, f16>) -> vec<4, f16>
 fn fract_498c77() {
-  var res: vec4<f16> = fract(vec4<f16>(1.h));
+  var res: vec4<f16> = fract(vec4<f16>(1.25h));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.dxc.hlsl
index b58ad69..e3d3cec 100644
--- a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_498c77() {
-  vector<float16_t, 4> res = frac((float16_t(1.0h)).xxxx);
+  vector<float16_t, 4> res = (float16_t(0.25h)).xxxx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.glsl
index b4f58b9..7fdb86a 100644
--- a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_498c77() {
-  f16vec4 res = fract(f16vec4(1.0hf));
+  f16vec4 res = f16vec4(0.25hf);
 }
 
 vec4 vertex_main() {
@@ -23,7 +23,7 @@
 precision mediump float;
 
 void fract_498c77() {
-  f16vec4 res = fract(f16vec4(1.0hf));
+  f16vec4 res = f16vec4(0.25hf);
 }
 
 void fragment_main() {
@@ -38,7 +38,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_498c77() {
-  f16vec4 res = fract(f16vec4(1.0hf));
+  f16vec4 res = f16vec4(0.25hf);
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.msl
index 521e56d..61516a2 100644
--- a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_498c77() {
-  half4 res = fract(half4(1.0h));
+  half4 res = half4(0.25h);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.spvasm
index d4bf720..bb9242b 100644
--- a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.spvasm
@@ -1,14 +1,13 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 36
+; Bound: 34
 ; Schema: 0
                OpCapability Shader
                OpCapability Float16
                OpCapability UniformAndStorageBuffer16BitAccess
                OpCapability StorageBuffer16BitAccess
                OpCapability StorageInputOutput16
-         %16 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -37,38 +36,37 @@
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
      %v4half = OpTypeVector %half 4
-%half_0x1p_0 = OpConstant %half 0x1p+0
-         %18 = OpConstantComposite %v4half %half_0x1p_0 %half_0x1p_0 %half_0x1p_0 %half_0x1p_0
+%half_0x1pn2 = OpConstant %half 0x1p-2
+         %16 = OpConstantComposite %v4half %half_0x1pn2 %half_0x1pn2 %half_0x1pn2 %half_0x1pn2
 %_ptr_Function_v4half = OpTypePointer Function %v4half
-         %21 = OpConstantNull %v4half
-         %22 = OpTypeFunction %v4float
+         %19 = OpConstantNull %v4half
+         %20 = OpTypeFunction %v4float
     %float_1 = OpConstant %float 1
 %fract_498c77 = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v4half Function %21
-         %13 = OpExtInst %v4half %16 Fract %18
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v4half Function %19
+               OpStore %res %16
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %22
-         %24 = OpLabel
-         %25 = OpFunctionCall %void %fract_498c77
+%vertex_main_inner = OpFunction %v4float None %20
+         %22 = OpLabel
+         %23 = OpFunctionCall %void %fract_498c77
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %27 = OpLabel
-         %28 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %28
+         %25 = OpLabel
+         %26 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %26
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %31 = OpLabel
-         %32 = OpFunctionCall %void %fract_498c77
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_498c77
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %34 = OpLabel
-         %35 = OpFunctionCall %void %fract_498c77
+         %32 = OpLabel
+         %33 = OpFunctionCall %void %fract_498c77
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.wgsl
index 3c8ac4e..adbf6ff 100644
--- a/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/498c77.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_498c77() {
-  var res : vec4<f16> = fract(vec4<f16>(1.0h));
+  var res : vec4<f16> = fract(vec4<f16>(1.25h));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl
new file mode 100644
index 0000000..0ee5db0
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl
@@ -0,0 +1,43 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(vec<4, fa>) -> vec<4, fa>
+fn fract_7e3f2d() {
+  var res = fract(vec4(1.25));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_7e3f2d();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_7e3f2d();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_7e3f2d();
+}
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..cdb4fc8
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_7e3f2d() {
+  float4 res = (0.25f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_7e3f2d();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_7e3f2d();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_7e3f2d();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..cdb4fc8
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_7e3f2d() {
+  float4 res = (0.25f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_7e3f2d();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_7e3f2d();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_7e3f2d();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.glsl
new file mode 100644
index 0000000..946ec1d
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_7e3f2d() {
+  vec4 res = vec4(0.25f);
+}
+
+vec4 vertex_main() {
+  fract_7e3f2d();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_7e3f2d() {
+  vec4 res = vec4(0.25f);
+}
+
+void fragment_main() {
+  fract_7e3f2d();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_7e3f2d() {
+  vec4 res = vec4(0.25f);
+}
+
+void compute_main() {
+  fract_7e3f2d();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.msl
new file mode 100644
index 0000000..ebcbba4
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_7e3f2d() {
+  float4 res = float4(0.25f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_7e3f2d();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_7e3f2d();
+  return;
+}
+
+kernel void compute_main() {
+  fract_7e3f2d();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.spvasm
new file mode 100644
index 0000000..fcf64d9
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.spvasm
@@ -0,0 +1,65 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 31
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_7e3f2d "fract_7e3f2d"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+ %float_0_25 = OpConstant %float 0.25
+         %14 = OpConstantComposite %v4float %float_0_25 %float_0_25 %float_0_25 %float_0_25
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %17 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_7e3f2d = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v4float Function %5
+               OpStore %res %14
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %fract_7e3f2d
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %26 = OpLabel
+         %27 = OpFunctionCall %void %fract_7e3f2d
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_7e3f2d
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.wgsl
new file mode 100644
index 0000000..313b058
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/7e3f2d.wgsl.expected.wgsl
@@ -0,0 +1,19 @@
+fn fract_7e3f2d() {
+  var res = fract(vec4(1.25));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_7e3f2d();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_7e3f2d();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_7e3f2d();
+}
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl
index 46d9741..3b2112a 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(vec<4, f32>) -> vec<4, f32>
 fn fract_8bc1e9() {
-  var res: vec4<f32> = fract(vec4<f32>(1.f));
+  var res: vec4<f32> = fract(vec4<f32>(1.25f));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.dxc.hlsl
index f6a454c..7f353c6 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_8bc1e9() {
-  float4 res = frac((1.0f).xxxx);
+  float4 res = (0.25f).xxxx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.fxc.hlsl
index f6a454c..7f353c6 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_8bc1e9() {
-  float4 res = frac((1.0f).xxxx);
+  float4 res = (0.25f).xxxx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.glsl
index e89b9d8..ecb59a2 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_8bc1e9() {
-  vec4 res = fract(vec4(1.0f));
+  vec4 res = vec4(0.25f);
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@
 precision mediump float;
 
 void fract_8bc1e9() {
-  vec4 res = fract(vec4(1.0f));
+  vec4 res = vec4(0.25f);
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@
 #version 310 es
 
 void fract_8bc1e9() {
-  vec4 res = fract(vec4(1.0f));
+  vec4 res = vec4(0.25f);
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.msl
index 97bbcef..41c4c87 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_8bc1e9() {
-  float4 res = fract(float4(1.0f));
+  float4 res = float4(0.25f);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.spvasm
index 0f9bdc3..01e4bb2 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.spvasm
@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 32
+; Bound: 31
 ; Schema: 0
                OpCapability Shader
-         %14 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -31,36 +30,36 @@
 %vertex_point_size = OpVariable %_ptr_Output_float Output %8
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
-    %float_1 = OpConstant %float 1
-         %16 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
+ %float_0_25 = OpConstant %float 0.25
+         %14 = OpConstantComposite %v4float %float_0_25 %float_0_25 %float_0_25 %float_0_25
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-         %19 = OpTypeFunction %v4float
+         %17 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_8bc1e9 = OpFunction %void None %9
          %12 = OpLabel
         %res = OpVariable %_ptr_Function_v4float Function %5
-         %13 = OpExtInst %v4float %14 Fract %16
-               OpStore %res %13
+               OpStore %res %14
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %19
-         %21 = OpLabel
-         %22 = OpFunctionCall %void %fract_8bc1e9
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %fract_8bc1e9
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %24 = OpLabel
-         %25 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %25
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %27 = OpLabel
-         %28 = OpFunctionCall %void %fract_8bc1e9
+         %26 = OpLabel
+         %27 = OpFunctionCall %void %fract_8bc1e9
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %30 = OpLabel
-         %31 = OpFunctionCall %void %fract_8bc1e9
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_8bc1e9
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.wgsl
index 7c99115..487ef1b 100644
--- a/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/8bc1e9.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_8bc1e9() {
-  var res : vec4<f32> = fract(vec4<f32>(1.0f));
+  var res : vec4<f32> = fract(vec4<f32>(1.25f));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl b/test/tint/builtins/gen/literal/fract/943cb1.wgsl
index 2ccd8f1..1841bab 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(vec<2, f32>) -> vec<2, f32>
 fn fract_943cb1() {
-  var res: vec2<f32> = fract(vec2<f32>(1.f));
+  var res: vec2<f32> = fract(vec2<f32>(1.25f));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.dxc.hlsl
index 60f7ce1..29149b5 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_943cb1() {
-  float2 res = frac((1.0f).xx);
+  float2 res = (0.25f).xx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.fxc.hlsl
index 60f7ce1..29149b5 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_943cb1() {
-  float2 res = frac((1.0f).xx);
+  float2 res = (0.25f).xx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.glsl
index c463977..0bef25d 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_943cb1() {
-  vec2 res = fract(vec2(1.0f));
+  vec2 res = vec2(0.25f);
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@
 precision mediump float;
 
 void fract_943cb1() {
-  vec2 res = fract(vec2(1.0f));
+  vec2 res = vec2(0.25f);
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@
 #version 310 es
 
 void fract_943cb1() {
-  vec2 res = fract(vec2(1.0f));
+  vec2 res = vec2(0.25f);
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.msl
index ea16cd9..f80f8f8 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_943cb1() {
-  float2 res = fract(float2(1.0f));
+  float2 res = float2(0.25f);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.spvasm
index debfe32..2f70370 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.spvasm
@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 34
+; Bound: 33
 ; Schema: 0
                OpCapability Shader
-         %15 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -32,37 +31,37 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
     %v2float = OpTypeVector %float 2
-    %float_1 = OpConstant %float 1
-         %17 = OpConstantComposite %v2float %float_1 %float_1
+ %float_0_25 = OpConstant %float 0.25
+         %15 = OpConstantComposite %v2float %float_0_25 %float_0_25
 %_ptr_Function_v2float = OpTypePointer Function %v2float
-         %20 = OpConstantNull %v2float
-         %21 = OpTypeFunction %v4float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_943cb1 = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v2float Function %20
-         %13 = OpExtInst %v2float %15 Fract %17
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %21
-         %23 = OpLabel
-         %24 = OpFunctionCall %void %fract_943cb1
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %fract_943cb1
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %26 = OpLabel
-         %27 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %27
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %fract_943cb1
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_943cb1
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %32 = OpLabel
-         %33 = OpFunctionCall %void %fract_943cb1
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %fract_943cb1
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.wgsl
index 21a6738..790e0db 100644
--- a/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/943cb1.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_943cb1() {
-  var res : vec2<f32> = fract(vec2<f32>(1.0f));
+  var res : vec2<f32> = fract(vec2<f32>(1.25f));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/958a1d.wgsl b/test/tint/builtins/gen/literal/fract/958a1d.wgsl
index 27348ee..f519e63 100644
--- a/test/tint/builtins/gen/literal/fract/958a1d.wgsl
+++ b/test/tint/builtins/gen/literal/fract/958a1d.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(vec<3, f16>) -> vec<3, f16>
 fn fract_958a1d() {
-  var res: vec3<f16> = fract(vec3<f16>(1.h));
+  var res: vec3<f16> = fract(vec3<f16>(1.25h));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.dxc.hlsl
index 998cc75..f5d91ea 100644
--- a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_958a1d() {
-  vector<float16_t, 3> res = frac((float16_t(1.0h)).xxx);
+  vector<float16_t, 3> res = (float16_t(0.25h)).xxx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.glsl
index de3b9ee..95cb787 100644
--- a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_958a1d() {
-  f16vec3 res = fract(f16vec3(1.0hf));
+  f16vec3 res = f16vec3(0.25hf);
 }
 
 vec4 vertex_main() {
@@ -23,7 +23,7 @@
 precision mediump float;
 
 void fract_958a1d() {
-  f16vec3 res = fract(f16vec3(1.0hf));
+  f16vec3 res = f16vec3(0.25hf);
 }
 
 void fragment_main() {
@@ -38,7 +38,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_958a1d() {
-  f16vec3 res = fract(f16vec3(1.0hf));
+  f16vec3 res = f16vec3(0.25hf);
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.msl
index 9a814ff..5d654de 100644
--- a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_958a1d() {
-  half3 res = fract(half3(1.0h));
+  half3 res = half3(0.25h);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.spvasm
index 79831a4..bfe99f8 100644
--- a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.spvasm
@@ -1,14 +1,13 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 36
+; Bound: 34
 ; Schema: 0
                OpCapability Shader
                OpCapability Float16
                OpCapability UniformAndStorageBuffer16BitAccess
                OpCapability StorageBuffer16BitAccess
                OpCapability StorageInputOutput16
-         %16 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -37,38 +36,37 @@
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
      %v3half = OpTypeVector %half 3
-%half_0x1p_0 = OpConstant %half 0x1p+0
-         %18 = OpConstantComposite %v3half %half_0x1p_0 %half_0x1p_0 %half_0x1p_0
+%half_0x1pn2 = OpConstant %half 0x1p-2
+         %16 = OpConstantComposite %v3half %half_0x1pn2 %half_0x1pn2 %half_0x1pn2
 %_ptr_Function_v3half = OpTypePointer Function %v3half
-         %21 = OpConstantNull %v3half
-         %22 = OpTypeFunction %v4float
+         %19 = OpConstantNull %v3half
+         %20 = OpTypeFunction %v4float
     %float_1 = OpConstant %float 1
 %fract_958a1d = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v3half Function %21
-         %13 = OpExtInst %v3half %16 Fract %18
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v3half Function %19
+               OpStore %res %16
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %22
-         %24 = OpLabel
-         %25 = OpFunctionCall %void %fract_958a1d
+%vertex_main_inner = OpFunction %v4float None %20
+         %22 = OpLabel
+         %23 = OpFunctionCall %void %fract_958a1d
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %27 = OpLabel
-         %28 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %28
+         %25 = OpLabel
+         %26 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %26
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %31 = OpLabel
-         %32 = OpFunctionCall %void %fract_958a1d
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_958a1d
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %34 = OpLabel
-         %35 = OpFunctionCall %void %fract_958a1d
+         %32 = OpLabel
+         %33 = OpFunctionCall %void %fract_958a1d
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.wgsl
index 5fdd153..edc6410 100644
--- a/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/958a1d.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_958a1d() {
-  var res : vec3<f16> = fract(vec3<f16>(1.0h));
+  var res : vec3<f16> = fract(vec3<f16>(1.25h));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl b/test/tint/builtins/gen/literal/fract/a49758.wgsl
index 3b4ea30..44c4d1c 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(vec<3, f32>) -> vec<3, f32>
 fn fract_a49758() {
-  var res: vec3<f32> = fract(vec3<f32>(1.f));
+  var res: vec3<f32> = fract(vec3<f32>(1.25f));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.dxc.hlsl
index ad67971..86bcc35 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_a49758() {
-  float3 res = frac((1.0f).xxx);
+  float3 res = (0.25f).xxx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.fxc.hlsl
index ad67971..86bcc35 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_a49758() {
-  float3 res = frac((1.0f).xxx);
+  float3 res = (0.25f).xxx;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.glsl
index d6c5415..7723da4 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_a49758() {
-  vec3 res = fract(vec3(1.0f));
+  vec3 res = vec3(0.25f);
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@
 precision mediump float;
 
 void fract_a49758() {
-  vec3 res = fract(vec3(1.0f));
+  vec3 res = vec3(0.25f);
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@
 #version 310 es
 
 void fract_a49758() {
-  vec3 res = fract(vec3(1.0f));
+  vec3 res = vec3(0.25f);
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.msl
index c59b0de..c42aff4 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_a49758() {
-  float3 res = fract(float3(1.0f));
+  float3 res = float3(0.25f);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.spvasm
index e132589..3a709c2 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.spvasm
@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 34
+; Bound: 33
 ; Schema: 0
                OpCapability Shader
-         %15 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -32,37 +31,37 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
     %v3float = OpTypeVector %float 3
-    %float_1 = OpConstant %float 1
-         %17 = OpConstantComposite %v3float %float_1 %float_1 %float_1
+ %float_0_25 = OpConstant %float 0.25
+         %15 = OpConstantComposite %v3float %float_0_25 %float_0_25 %float_0_25
 %_ptr_Function_v3float = OpTypePointer Function %v3float
-         %20 = OpConstantNull %v3float
-         %21 = OpTypeFunction %v4float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_a49758 = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v3float Function %20
-         %13 = OpExtInst %v3float %15 Fract %17
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %21
-         %23 = OpLabel
-         %24 = OpFunctionCall %void %fract_a49758
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %fract_a49758
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %26 = OpLabel
-         %27 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %27
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %fract_a49758
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_a49758
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %32 = OpLabel
-         %33 = OpFunctionCall %void %fract_a49758
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %fract_a49758
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.wgsl
index 70c8250..e5291fb 100644
--- a/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/a49758.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_a49758() {
-  var res : vec3<f32> = fract(vec3<f32>(1.0f));
+  var res : vec3<f32> = fract(vec3<f32>(1.25f));
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl
index 8ea12ea..007ceb0 100644
--- a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl
+++ b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(f16) -> f16
 fn fract_eb38ce() {
-  var res: f16 = fract(1.h);
+  var res: f16 = fract(1.25h);
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.dxc.hlsl
index a4e26da..f9b3793 100644
--- a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_eb38ce() {
-  float16_t res = frac(float16_t(1.0h));
+  float16_t res = float16_t(0.25h);
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.glsl
index dbd83c9..0cb166c 100644
--- a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_eb38ce() {
-  float16_t res = fract(1.0hf);
+  float16_t res = 0.25hf;
 }
 
 vec4 vertex_main() {
@@ -23,7 +23,7 @@
 precision mediump float;
 
 void fract_eb38ce() {
-  float16_t res = fract(1.0hf);
+  float16_t res = 0.25hf;
 }
 
 void fragment_main() {
@@ -38,7 +38,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_eb38ce() {
-  float16_t res = fract(1.0hf);
+  float16_t res = 0.25hf;
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.msl
index e5b9d42..207c702 100644
--- a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_eb38ce() {
-  half res = fract(1.0h);
+  half res = 0.25h;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.spvasm
index d4f1736..506c880 100644
--- a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.spvasm
@@ -1,14 +1,13 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 34
+; Bound: 32
 ; Schema: 0
                OpCapability Shader
                OpCapability Float16
                OpCapability UniformAndStorageBuffer16BitAccess
                OpCapability StorageBuffer16BitAccess
                OpCapability StorageInputOutput16
-         %15 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -36,37 +35,36 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
-%half_0x1p_0 = OpConstant %half 0x1p+0
+%half_0x1pn2 = OpConstant %half 0x1p-2
 %_ptr_Function_half = OpTypePointer Function %half
-         %19 = OpConstantNull %half
-         %20 = OpTypeFunction %v4float
+         %17 = OpConstantNull %half
+         %18 = OpTypeFunction %v4float
     %float_1 = OpConstant %float 1
 %fract_eb38ce = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_half Function %19
-         %13 = OpExtInst %half %15 Fract %half_0x1p_0
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_half Function %17
+               OpStore %res %half_0x1pn2
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %20
-         %22 = OpLabel
-         %23 = OpFunctionCall %void %fract_eb38ce
+%vertex_main_inner = OpFunction %v4float None %18
+         %20 = OpLabel
+         %21 = OpFunctionCall %void %fract_eb38ce
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %25 = OpLabel
-         %26 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %26
+         %23 = OpLabel
+         %24 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %24
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %fract_eb38ce
+         %27 = OpLabel
+         %28 = OpFunctionCall %void %fract_eb38ce
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %32 = OpLabel
-         %33 = OpFunctionCall %void %fract_eb38ce
+         %30 = OpLabel
+         %31 = OpFunctionCall %void %fract_eb38ce
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.wgsl
index c6aa88c..2573566 100644
--- a/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/eb38ce.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_eb38ce() {
-  var res : f16 = fract(1.0h);
+  var res : f16 = fract(1.25h);
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl
new file mode 100644
index 0000000..7ecb626
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl
@@ -0,0 +1,43 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(vec<2, fa>) -> vec<2, fa>
+fn fract_ed00ca() {
+  var res = fract(vec2(1.25));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed00ca();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed00ca();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed00ca();
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..de1638a
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed00ca() {
+  float2 res = (0.25f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed00ca();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed00ca();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed00ca();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..de1638a
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed00ca() {
+  float2 res = (0.25f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed00ca();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed00ca();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed00ca();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.glsl
new file mode 100644
index 0000000..e6fe3c1
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_ed00ca() {
+  vec2 res = vec2(0.25f);
+}
+
+vec4 vertex_main() {
+  fract_ed00ca();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_ed00ca() {
+  vec2 res = vec2(0.25f);
+}
+
+void fragment_main() {
+  fract_ed00ca();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_ed00ca() {
+  vec2 res = vec2(0.25f);
+}
+
+void compute_main() {
+  fract_ed00ca();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.msl
new file mode 100644
index 0000000..d44f4ac
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_ed00ca() {
+  float2 res = float2(0.25f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_ed00ca();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_ed00ca();
+  return;
+}
+
+kernel void compute_main() {
+  fract_ed00ca();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.spvasm
new file mode 100644
index 0000000..695ff30
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.spvasm
@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_ed00ca "fract_ed00ca"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v2float = OpTypeVector %float 2
+ %float_0_25 = OpConstant %float 0.25
+         %15 = OpConstantComposite %v2float %float_0_25 %float_0_25
+%_ptr_Function_v2float = OpTypePointer Function %v2float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_ed00ca = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %fract_ed00ca
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_ed00ca
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %fract_ed00ca
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.wgsl
new file mode 100644
index 0000000..dc1698b
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed00ca.wgsl.expected.wgsl
@@ -0,0 +1,19 @@
+fn fract_ed00ca() {
+  var res = fract(vec2(1.25));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed00ca();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed00ca();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed00ca();
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl
new file mode 100644
index 0000000..b4f0d9d
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl
@@ -0,0 +1,43 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(vec<3, fa>) -> vec<3, fa>
+fn fract_ed2f79() {
+  var res = fract(vec3(1.25));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed2f79();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed2f79();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed2f79();
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..3686b4b
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed2f79() {
+  float3 res = (0.25f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed2f79();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed2f79();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed2f79();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..3686b4b
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed2f79() {
+  float3 res = (0.25f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed2f79();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed2f79();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed2f79();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.glsl
new file mode 100644
index 0000000..9952c8b
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_ed2f79() {
+  vec3 res = vec3(0.25f);
+}
+
+vec4 vertex_main() {
+  fract_ed2f79();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_ed2f79() {
+  vec3 res = vec3(0.25f);
+}
+
+void fragment_main() {
+  fract_ed2f79();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_ed2f79() {
+  vec3 res = vec3(0.25f);
+}
+
+void compute_main() {
+  fract_ed2f79();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.msl
new file mode 100644
index 0000000..64c5555
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_ed2f79() {
+  float3 res = float3(0.25f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_ed2f79();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_ed2f79();
+  return;
+}
+
+kernel void compute_main() {
+  fract_ed2f79();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.spvasm
new file mode 100644
index 0000000..5b6913e
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.spvasm
@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_ed2f79 "fract_ed2f79"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v3float = OpTypeVector %float 3
+ %float_0_25 = OpConstant %float 0.25
+         %15 = OpConstantComposite %v3float %float_0_25 %float_0_25 %float_0_25
+%_ptr_Function_v3float = OpTypePointer Function %v3float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_ed2f79 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %fract_ed2f79
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_ed2f79
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %fract_ed2f79
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.wgsl
new file mode 100644
index 0000000..c042c8c
--- /dev/null
+++ b/test/tint/builtins/gen/literal/fract/ed2f79.wgsl.expected.wgsl
@@ -0,0 +1,19 @@
+fn fract_ed2f79() {
+  var res = fract(vec3(1.25));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed2f79();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed2f79();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed2f79();
+}
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl
index 1fb7db0..8a7bc3d 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(f32) -> f32
 fn fract_fa5c71() {
-  var res: f32 = fract(1.f);
+  var res: f32 = fract(1.25f);
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.dxc.hlsl
index dcf44fd..30c1d2a 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_fa5c71() {
-  float res = frac(1.0f);
+  float res = 0.25f;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.fxc.hlsl
index dcf44fd..30c1d2a 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_fa5c71() {
-  float res = frac(1.0f);
+  float res = 0.25f;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.glsl b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.glsl
index 6bc91bf..58d2cff 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_fa5c71() {
-  float res = fract(1.0f);
+  float res = 0.25f;
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@
 precision mediump float;
 
 void fract_fa5c71() {
-  float res = fract(1.0f);
+  float res = 0.25f;
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@
 #version 310 es
 
 void fract_fa5c71() {
-  float res = fract(1.0f);
+  float res = 0.25f;
 }
 
 void compute_main() {
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.msl b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.msl
index 50baf32..b08afbe 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.msl
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_fa5c71() {
-  float res = fract(1.0f);
+  float res = 0.25f;
 }
 
 struct tint_symbol {
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.spvasm b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.spvasm
index 6e73bc5..3a4850d 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.spvasm
@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 31
+; Bound: 30
 ; Schema: 0
                OpCapability Shader
-         %14 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -31,35 +30,35 @@
 %vertex_point_size = OpVariable %_ptr_Output_float Output %8
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
-    %float_1 = OpConstant %float 1
+ %float_0_25 = OpConstant %float 0.25
 %_ptr_Function_float = OpTypePointer Function %float
-         %18 = OpTypeFunction %v4float
+         %16 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_fa5c71 = OpFunction %void None %9
          %12 = OpLabel
         %res = OpVariable %_ptr_Function_float Function %8
-         %13 = OpExtInst %float %14 Fract %float_1
-               OpStore %res %13
+               OpStore %res %float_0_25
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %18
-         %20 = OpLabel
-         %21 = OpFunctionCall %void %fract_fa5c71
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %fract_fa5c71
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %23 = OpLabel
-         %24 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %24
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %26 = OpLabel
-         %27 = OpFunctionCall %void %fract_fa5c71
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %fract_fa5c71
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %fract_fa5c71
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_fa5c71
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.wgsl
index 431666a..a614981 100644
--- a/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/literal/fract/fa5c71.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_fa5c71() {
-  var res : f32 = fract(1.0f);
+  var res : f32 = fract(1.25f);
 }
 
 @vertex
diff --git a/test/tint/builtins/gen/var/fract/181aa9.wgsl b/test/tint/builtins/gen/var/fract/181aa9.wgsl
index 1ffd186..218c38f 100644
--- a/test/tint/builtins/gen/var/fract/181aa9.wgsl
+++ b/test/tint/builtins/gen/var/fract/181aa9.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(vec<2, f16>) -> vec<2, f16>
 fn fract_181aa9() {
-  var arg_0 = vec2<f16>(1.h);
+  var arg_0 = vec2<f16>(1.25h);
   var res: vec2<f16> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.dxc.hlsl
index 6d73d2e..240fbb9 100644
--- a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_181aa9() {
-  vector<float16_t, 2> arg_0 = (float16_t(1.0h)).xx;
+  vector<float16_t, 2> arg_0 = (float16_t(1.25h)).xx;
   vector<float16_t, 2> res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.glsl
index f2283f7..06329c5 100644
--- a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_181aa9() {
-  f16vec2 arg_0 = f16vec2(1.0hf);
+  f16vec2 arg_0 = f16vec2(1.25hf);
   f16vec2 res = fract(arg_0);
 }
 
@@ -24,7 +24,7 @@
 precision mediump float;
 
 void fract_181aa9() {
-  f16vec2 arg_0 = f16vec2(1.0hf);
+  f16vec2 arg_0 = f16vec2(1.25hf);
   f16vec2 res = fract(arg_0);
 }
 
@@ -40,7 +40,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_181aa9() {
-  f16vec2 arg_0 = f16vec2(1.0hf);
+  f16vec2 arg_0 = f16vec2(1.25hf);
   f16vec2 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.msl
index a44159f..751c7b5 100644
--- a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_181aa9() {
-  half2 arg_0 = half2(1.0h);
+  half2 arg_0 = half2(1.25h);
   half2 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.spvasm
index 95c9f98..b50b553 100644
--- a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.spvasm
@@ -38,8 +38,8 @@
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
      %v2half = OpTypeVector %half 2
-%half_0x1p_0 = OpConstant %half 0x1p+0
-         %16 = OpConstantComposite %v2half %half_0x1p_0 %half_0x1p_0
+%half_0x1_4p_0 = OpConstant %half 0x1.4p+0
+         %16 = OpConstantComposite %v2half %half_0x1_4p_0 %half_0x1_4p_0
 %_ptr_Function_v2half = OpTypePointer Function %v2half
          %19 = OpConstantNull %v2half
          %24 = OpTypeFunction %v4float
diff --git a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.wgsl
index c65421c..d47bd7f 100644
--- a/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/181aa9.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_181aa9() {
-  var arg_0 = vec2<f16>(1.0h);
+  var arg_0 = vec2<f16>(1.25h);
   var res : vec2<f16> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl b/test/tint/builtins/gen/var/fract/2eddfe.wgsl
new file mode 100644
index 0000000..44eb00b
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl
@@ -0,0 +1,44 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(fa) -> fa
+fn fract_2eddfe() {
+  const arg_0 = 1.25;
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_2eddfe();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_2eddfe();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_2eddfe();
+}
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..c27230f
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_2eddfe();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_2eddfe();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_2eddfe();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..c27230f
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_2eddfe();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_2eddfe();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_2eddfe();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.glsl
new file mode 100644
index 0000000..a8d9c20
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+vec4 vertex_main() {
+  fract_2eddfe();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+void fragment_main() {
+  fract_2eddfe();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+void compute_main() {
+  fract_2eddfe();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.msl
new file mode 100644
index 0000000..f9a855f
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_2eddfe() {
+  float res = 0.25f;
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_2eddfe();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_2eddfe();
+  return;
+}
+
+kernel void compute_main() {
+  fract_2eddfe();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.spvasm
new file mode 100644
index 0000000..0355f37
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.spvasm
@@ -0,0 +1,64 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 30
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_2eddfe "fract_2eddfe"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+ %float_0_25 = OpConstant %float 0.25
+%_ptr_Function_float = OpTypePointer Function %float
+         %16 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_2eddfe = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_float Function %8
+               OpStore %res %float_0_25
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %fract_2eddfe
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %fract_2eddfe
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_2eddfe
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.wgsl
new file mode 100644
index 0000000..5379101
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/2eddfe.wgsl.expected.wgsl
@@ -0,0 +1,20 @@
+fn fract_2eddfe() {
+  const arg_0 = 1.25;
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_2eddfe();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_2eddfe();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_2eddfe();
+}
diff --git a/test/tint/builtins/gen/var/fract/498c77.wgsl b/test/tint/builtins/gen/var/fract/498c77.wgsl
index 5ea4700..9b550e8 100644
--- a/test/tint/builtins/gen/var/fract/498c77.wgsl
+++ b/test/tint/builtins/gen/var/fract/498c77.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(vec<4, f16>) -> vec<4, f16>
 fn fract_498c77() {
-  var arg_0 = vec4<f16>(1.h);
+  var arg_0 = vec4<f16>(1.25h);
   var res: vec4<f16> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.dxc.hlsl
index 5887de1..d114662 100644
--- a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_498c77() {
-  vector<float16_t, 4> arg_0 = (float16_t(1.0h)).xxxx;
+  vector<float16_t, 4> arg_0 = (float16_t(1.25h)).xxxx;
   vector<float16_t, 4> res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.glsl
index 1e866f5..6c1a9c1 100644
--- a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_498c77() {
-  f16vec4 arg_0 = f16vec4(1.0hf);
+  f16vec4 arg_0 = f16vec4(1.25hf);
   f16vec4 res = fract(arg_0);
 }
 
@@ -24,7 +24,7 @@
 precision mediump float;
 
 void fract_498c77() {
-  f16vec4 arg_0 = f16vec4(1.0hf);
+  f16vec4 arg_0 = f16vec4(1.25hf);
   f16vec4 res = fract(arg_0);
 }
 
@@ -40,7 +40,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_498c77() {
-  f16vec4 arg_0 = f16vec4(1.0hf);
+  f16vec4 arg_0 = f16vec4(1.25hf);
   f16vec4 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.msl
index 9c08796..928481b 100644
--- a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_498c77() {
-  half4 arg_0 = half4(1.0h);
+  half4 arg_0 = half4(1.25h);
   half4 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.spvasm
index 2ec1d9d..dd24ec1 100644
--- a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.spvasm
@@ -38,8 +38,8 @@
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
      %v4half = OpTypeVector %half 4
-%half_0x1p_0 = OpConstant %half 0x1p+0
-         %16 = OpConstantComposite %v4half %half_0x1p_0 %half_0x1p_0 %half_0x1p_0 %half_0x1p_0
+%half_0x1_4p_0 = OpConstant %half 0x1.4p+0
+         %16 = OpConstantComposite %v4half %half_0x1_4p_0 %half_0x1_4p_0 %half_0x1_4p_0 %half_0x1_4p_0
 %_ptr_Function_v4half = OpTypePointer Function %v4half
          %19 = OpConstantNull %v4half
          %24 = OpTypeFunction %v4float
diff --git a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.wgsl
index 72e50bb..9255273 100644
--- a/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/498c77.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_498c77() {
-  var arg_0 = vec4<f16>(1.0h);
+  var arg_0 = vec4<f16>(1.25h);
   var res : vec4<f16> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl
new file mode 100644
index 0000000..80ad812
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl
@@ -0,0 +1,44 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(vec<4, fa>) -> vec<4, fa>
+fn fract_7e3f2d() {
+  const arg_0 = vec4(1.25);
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_7e3f2d();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_7e3f2d();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_7e3f2d();
+}
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..cdb4fc8
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_7e3f2d() {
+  float4 res = (0.25f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_7e3f2d();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_7e3f2d();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_7e3f2d();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..cdb4fc8
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_7e3f2d() {
+  float4 res = (0.25f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_7e3f2d();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_7e3f2d();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_7e3f2d();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.glsl
new file mode 100644
index 0000000..946ec1d
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_7e3f2d() {
+  vec4 res = vec4(0.25f);
+}
+
+vec4 vertex_main() {
+  fract_7e3f2d();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_7e3f2d() {
+  vec4 res = vec4(0.25f);
+}
+
+void fragment_main() {
+  fract_7e3f2d();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_7e3f2d() {
+  vec4 res = vec4(0.25f);
+}
+
+void compute_main() {
+  fract_7e3f2d();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.msl
new file mode 100644
index 0000000..ebcbba4
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_7e3f2d() {
+  float4 res = float4(0.25f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_7e3f2d();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_7e3f2d();
+  return;
+}
+
+kernel void compute_main() {
+  fract_7e3f2d();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.spvasm
new file mode 100644
index 0000000..fcf64d9
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.spvasm
@@ -0,0 +1,65 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 31
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_7e3f2d "fract_7e3f2d"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+ %float_0_25 = OpConstant %float 0.25
+         %14 = OpConstantComposite %v4float %float_0_25 %float_0_25 %float_0_25 %float_0_25
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %17 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_7e3f2d = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v4float Function %5
+               OpStore %res %14
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %fract_7e3f2d
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %26 = OpLabel
+         %27 = OpFunctionCall %void %fract_7e3f2d
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_7e3f2d
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.wgsl
new file mode 100644
index 0000000..1314787
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/7e3f2d.wgsl.expected.wgsl
@@ -0,0 +1,20 @@
+fn fract_7e3f2d() {
+  const arg_0 = vec4(1.25);
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_7e3f2d();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_7e3f2d();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_7e3f2d();
+}
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl
index 1591a97..671bed0 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(vec<4, f32>) -> vec<4, f32>
 fn fract_8bc1e9() {
-  var arg_0 = vec4<f32>(1.f);
+  var arg_0 = vec4<f32>(1.25f);
   var res: vec4<f32> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.dxc.hlsl
index 3fc1143..60cd54a 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_8bc1e9() {
-  float4 arg_0 = (1.0f).xxxx;
+  float4 arg_0 = (1.25f).xxxx;
   float4 res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.fxc.hlsl
index 3fc1143..60cd54a 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_8bc1e9() {
-  float4 arg_0 = (1.0f).xxxx;
+  float4 arg_0 = (1.25f).xxxx;
   float4 res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.glsl
index a931954..268b77c 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_8bc1e9() {
-  vec4 arg_0 = vec4(1.0f);
+  vec4 arg_0 = vec4(1.25f);
   vec4 res = fract(arg_0);
 }
 
@@ -22,7 +22,7 @@
 precision mediump float;
 
 void fract_8bc1e9() {
-  vec4 arg_0 = vec4(1.0f);
+  vec4 arg_0 = vec4(1.25f);
   vec4 res = fract(arg_0);
 }
 
@@ -37,7 +37,7 @@
 #version 310 es
 
 void fract_8bc1e9() {
-  vec4 arg_0 = vec4(1.0f);
+  vec4 arg_0 = vec4(1.25f);
   vec4 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.msl
index de4a03d..dbedba1 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_8bc1e9() {
-  float4 arg_0 = float4(1.0f);
+  float4 arg_0 = float4(1.25f);
   float4 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.spvasm
index 2fce3d9..1c8b35b 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.spvasm
@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 34
+; Bound: 35
 ; Schema: 0
                OpCapability Shader
          %18 = OpExtInstImport "GLSL.std.450"
@@ -32,10 +32,11 @@
 %vertex_point_size = OpVariable %_ptr_Output_float Output %8
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
-    %float_1 = OpConstant %float 1
-         %14 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
+ %float_1_25 = OpConstant %float 1.25
+         %14 = OpConstantComposite %v4float %float_1_25 %float_1_25 %float_1_25 %float_1_25
 %_ptr_Function_v4float = OpTypePointer Function %v4float
          %21 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_8bc1e9 = OpFunction %void None %9
          %12 = OpLabel
       %arg_0 = OpVariable %_ptr_Function_v4float Function %5
@@ -59,12 +60,12 @@
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %fract_8bc1e9
+         %30 = OpLabel
+         %31 = OpFunctionCall %void %fract_8bc1e9
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %32 = OpLabel
-         %33 = OpFunctionCall %void %fract_8bc1e9
+         %33 = OpLabel
+         %34 = OpFunctionCall %void %fract_8bc1e9
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.wgsl
index 31c9a04..a1db1d3 100644
--- a/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/8bc1e9.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_8bc1e9() {
-  var arg_0 = vec4<f32>(1.0f);
+  var arg_0 = vec4<f32>(1.25f);
   var res : vec4<f32> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl b/test/tint/builtins/gen/var/fract/943cb1.wgsl
index 19a5428..4db50d4 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(vec<2, f32>) -> vec<2, f32>
 fn fract_943cb1() {
-  var arg_0 = vec2<f32>(1.f);
+  var arg_0 = vec2<f32>(1.25f);
   var res: vec2<f32> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.dxc.hlsl
index 7ebeca2..32341a2 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_943cb1() {
-  float2 arg_0 = (1.0f).xx;
+  float2 arg_0 = (1.25f).xx;
   float2 res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.fxc.hlsl
index 7ebeca2..32341a2 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_943cb1() {
-  float2 arg_0 = (1.0f).xx;
+  float2 arg_0 = (1.25f).xx;
   float2 res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.glsl
index 0cdaa88..a5ced40 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_943cb1() {
-  vec2 arg_0 = vec2(1.0f);
+  vec2 arg_0 = vec2(1.25f);
   vec2 res = fract(arg_0);
 }
 
@@ -22,7 +22,7 @@
 precision mediump float;
 
 void fract_943cb1() {
-  vec2 arg_0 = vec2(1.0f);
+  vec2 arg_0 = vec2(1.25f);
   vec2 res = fract(arg_0);
 }
 
@@ -37,7 +37,7 @@
 #version 310 es
 
 void fract_943cb1() {
-  vec2 arg_0 = vec2(1.0f);
+  vec2 arg_0 = vec2(1.25f);
   vec2 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.msl
index 1d5202f..e2c7c6a 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_943cb1() {
-  float2 arg_0 = float2(1.0f);
+  float2 arg_0 = float2(1.25f);
   float2 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.spvasm
index 1c141d5..bfc7d49 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.spvasm
@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 36
+; Bound: 37
 ; Schema: 0
                OpCapability Shader
          %20 = OpExtInstImport "GLSL.std.450"
@@ -33,11 +33,12 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
     %v2float = OpTypeVector %float 2
-    %float_1 = OpConstant %float 1
-         %15 = OpConstantComposite %v2float %float_1 %float_1
+ %float_1_25 = OpConstant %float 1.25
+         %15 = OpConstantComposite %v2float %float_1_25 %float_1_25
 %_ptr_Function_v2float = OpTypePointer Function %v2float
          %18 = OpConstantNull %v2float
          %23 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_943cb1 = OpFunction %void None %9
          %12 = OpLabel
       %arg_0 = OpVariable %_ptr_Function_v2float Function %18
@@ -61,12 +62,12 @@
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %31 = OpLabel
-         %32 = OpFunctionCall %void %fract_943cb1
+         %32 = OpLabel
+         %33 = OpFunctionCall %void %fract_943cb1
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %34 = OpLabel
-         %35 = OpFunctionCall %void %fract_943cb1
+         %35 = OpLabel
+         %36 = OpFunctionCall %void %fract_943cb1
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.wgsl
index 456ab98..b0fd64f 100644
--- a/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/943cb1.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_943cb1() {
-  var arg_0 = vec2<f32>(1.0f);
+  var arg_0 = vec2<f32>(1.25f);
   var res : vec2<f32> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/958a1d.wgsl b/test/tint/builtins/gen/var/fract/958a1d.wgsl
index dbcf68c..bec9395 100644
--- a/test/tint/builtins/gen/var/fract/958a1d.wgsl
+++ b/test/tint/builtins/gen/var/fract/958a1d.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(vec<3, f16>) -> vec<3, f16>
 fn fract_958a1d() {
-  var arg_0 = vec3<f16>(1.h);
+  var arg_0 = vec3<f16>(1.25h);
   var res: vec3<f16> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.dxc.hlsl
index 3fd76d1..a63f1dc 100644
--- a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_958a1d() {
-  vector<float16_t, 3> arg_0 = (float16_t(1.0h)).xxx;
+  vector<float16_t, 3> arg_0 = (float16_t(1.25h)).xxx;
   vector<float16_t, 3> res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.glsl
index 99bf6a5..2cbca6f 100644
--- a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_958a1d() {
-  f16vec3 arg_0 = f16vec3(1.0hf);
+  f16vec3 arg_0 = f16vec3(1.25hf);
   f16vec3 res = fract(arg_0);
 }
 
@@ -24,7 +24,7 @@
 precision mediump float;
 
 void fract_958a1d() {
-  f16vec3 arg_0 = f16vec3(1.0hf);
+  f16vec3 arg_0 = f16vec3(1.25hf);
   f16vec3 res = fract(arg_0);
 }
 
@@ -40,7 +40,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_958a1d() {
-  f16vec3 arg_0 = f16vec3(1.0hf);
+  f16vec3 arg_0 = f16vec3(1.25hf);
   f16vec3 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.msl
index 1d0856f..9eb9bf4 100644
--- a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_958a1d() {
-  half3 arg_0 = half3(1.0h);
+  half3 arg_0 = half3(1.25h);
   half3 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.spvasm
index b0a0294..c7617e2 100644
--- a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.spvasm
@@ -38,8 +38,8 @@
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
      %v3half = OpTypeVector %half 3
-%half_0x1p_0 = OpConstant %half 0x1p+0
-         %16 = OpConstantComposite %v3half %half_0x1p_0 %half_0x1p_0 %half_0x1p_0
+%half_0x1_4p_0 = OpConstant %half 0x1.4p+0
+         %16 = OpConstantComposite %v3half %half_0x1_4p_0 %half_0x1_4p_0 %half_0x1_4p_0
 %_ptr_Function_v3half = OpTypePointer Function %v3half
          %19 = OpConstantNull %v3half
          %24 = OpTypeFunction %v4float
diff --git a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.wgsl
index e573af5..9a710e3 100644
--- a/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/958a1d.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_958a1d() {
-  var arg_0 = vec3<f16>(1.0h);
+  var arg_0 = vec3<f16>(1.25h);
   var res : vec3<f16> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl b/test/tint/builtins/gen/var/fract/a49758.wgsl
index cf4b0bc..5be115e 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(vec<3, f32>) -> vec<3, f32>
 fn fract_a49758() {
-  var arg_0 = vec3<f32>(1.f);
+  var arg_0 = vec3<f32>(1.25f);
   var res: vec3<f32> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.dxc.hlsl
index cbd7af2..911008e 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_a49758() {
-  float3 arg_0 = (1.0f).xxx;
+  float3 arg_0 = (1.25f).xxx;
   float3 res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.fxc.hlsl
index cbd7af2..911008e 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_a49758() {
-  float3 arg_0 = (1.0f).xxx;
+  float3 arg_0 = (1.25f).xxx;
   float3 res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.glsl
index 0f4157f..9fcd774 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_a49758() {
-  vec3 arg_0 = vec3(1.0f);
+  vec3 arg_0 = vec3(1.25f);
   vec3 res = fract(arg_0);
 }
 
@@ -22,7 +22,7 @@
 precision mediump float;
 
 void fract_a49758() {
-  vec3 arg_0 = vec3(1.0f);
+  vec3 arg_0 = vec3(1.25f);
   vec3 res = fract(arg_0);
 }
 
@@ -37,7 +37,7 @@
 #version 310 es
 
 void fract_a49758() {
-  vec3 arg_0 = vec3(1.0f);
+  vec3 arg_0 = vec3(1.25f);
   vec3 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.msl
index 2814c3e..e5b30f8 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_a49758() {
-  float3 arg_0 = float3(1.0f);
+  float3 arg_0 = float3(1.25f);
   float3 res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.spvasm
index b2d7346..517ce36 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.spvasm
@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 36
+; Bound: 37
 ; Schema: 0
                OpCapability Shader
          %20 = OpExtInstImport "GLSL.std.450"
@@ -33,11 +33,12 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
     %v3float = OpTypeVector %float 3
-    %float_1 = OpConstant %float 1
-         %15 = OpConstantComposite %v3float %float_1 %float_1 %float_1
+ %float_1_25 = OpConstant %float 1.25
+         %15 = OpConstantComposite %v3float %float_1_25 %float_1_25 %float_1_25
 %_ptr_Function_v3float = OpTypePointer Function %v3float
          %18 = OpConstantNull %v3float
          %23 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_a49758 = OpFunction %void None %9
          %12 = OpLabel
       %arg_0 = OpVariable %_ptr_Function_v3float Function %18
@@ -61,12 +62,12 @@
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %31 = OpLabel
-         %32 = OpFunctionCall %void %fract_a49758
+         %32 = OpLabel
+         %33 = OpFunctionCall %void %fract_a49758
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %34 = OpLabel
-         %35 = OpFunctionCall %void %fract_a49758
+         %35 = OpLabel
+         %36 = OpFunctionCall %void %fract_a49758
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.wgsl
index 6373452..103c12a 100644
--- a/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/a49758.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_a49758() {
-  var arg_0 = vec3<f32>(1.0f);
+  var arg_0 = vec3<f32>(1.25f);
   var res : vec3<f32> = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/eb38ce.wgsl b/test/tint/builtins/gen/var/fract/eb38ce.wgsl
index 27a5dbc..52ca757 100644
--- a/test/tint/builtins/gen/var/fract/eb38ce.wgsl
+++ b/test/tint/builtins/gen/var/fract/eb38ce.wgsl
@@ -25,7 +25,7 @@
 
 // fn fract(f16) -> f16
 fn fract_eb38ce() {
-  var arg_0 = 1.h;
+  var arg_0 = 1.25h;
   var res: f16 = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.dxc.hlsl
index f815007..3129c7d 100644
--- a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_eb38ce() {
-  float16_t arg_0 = float16_t(1.0h);
+  float16_t arg_0 = float16_t(1.25h);
   float16_t res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.glsl
index c463851..9fdbf1f 100644
--- a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.glsl
@@ -2,7 +2,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_eb38ce() {
-  float16_t arg_0 = 1.0hf;
+  float16_t arg_0 = 1.25hf;
   float16_t res = fract(arg_0);
 }
 
@@ -24,7 +24,7 @@
 precision mediump float;
 
 void fract_eb38ce() {
-  float16_t arg_0 = 1.0hf;
+  float16_t arg_0 = 1.25hf;
   float16_t res = fract(arg_0);
 }
 
@@ -40,7 +40,7 @@
 #extension GL_AMD_gpu_shader_half_float : require
 
 void fract_eb38ce() {
-  float16_t arg_0 = 1.0hf;
+  float16_t arg_0 = 1.25hf;
   float16_t res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.msl
index 69756a8..5b3e3ba 100644
--- a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_eb38ce() {
-  half arg_0 = 1.0h;
+  half arg_0 = 1.25h;
   half res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.spvasm
index d618092..447246a 100644
--- a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.spvasm
@@ -37,7 +37,7 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
        %half = OpTypeFloat 16
-%half_0x1p_0 = OpConstant %half 0x1p+0
+%half_0x1_4p_0 = OpConstant %half 0x1.4p+0
 %_ptr_Function_half = OpTypePointer Function %half
          %17 = OpConstantNull %half
          %22 = OpTypeFunction %v4float
@@ -46,7 +46,7 @@
          %12 = OpLabel
       %arg_0 = OpVariable %_ptr_Function_half Function %17
         %res = OpVariable %_ptr_Function_half Function %17
-               OpStore %arg_0 %half_0x1p_0
+               OpStore %arg_0 %half_0x1_4p_0
          %20 = OpLoad %half %arg_0
          %18 = OpExtInst %half %19 Fract %20
                OpStore %res %18
diff --git a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.wgsl
index 51cf528..ae970ef 100644
--- a/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/eb38ce.wgsl.expected.wgsl
@@ -1,7 +1,7 @@
 enable f16;
 
 fn fract_eb38ce() {
-  var arg_0 = 1.0h;
+  var arg_0 = 1.25h;
   var res : f16 = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl b/test/tint/builtins/gen/var/fract/ed00ca.wgsl
new file mode 100644
index 0000000..beaa8e8
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl
@@ -0,0 +1,44 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(vec<2, fa>) -> vec<2, fa>
+fn fract_ed00ca() {
+  const arg_0 = vec2(1.25);
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed00ca();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed00ca();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed00ca();
+}
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..de1638a
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed00ca() {
+  float2 res = (0.25f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed00ca();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed00ca();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed00ca();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..de1638a
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed00ca() {
+  float2 res = (0.25f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed00ca();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed00ca();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed00ca();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.glsl
new file mode 100644
index 0000000..e6fe3c1
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_ed00ca() {
+  vec2 res = vec2(0.25f);
+}
+
+vec4 vertex_main() {
+  fract_ed00ca();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_ed00ca() {
+  vec2 res = vec2(0.25f);
+}
+
+void fragment_main() {
+  fract_ed00ca();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_ed00ca() {
+  vec2 res = vec2(0.25f);
+}
+
+void compute_main() {
+  fract_ed00ca();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.msl
new file mode 100644
index 0000000..d44f4ac
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_ed00ca() {
+  float2 res = float2(0.25f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_ed00ca();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_ed00ca();
+  return;
+}
+
+kernel void compute_main() {
+  fract_ed00ca();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.spvasm
new file mode 100644
index 0000000..695ff30
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.spvasm
@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_ed00ca "fract_ed00ca"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v2float = OpTypeVector %float 2
+ %float_0_25 = OpConstant %float 0.25
+         %15 = OpConstantComposite %v2float %float_0_25 %float_0_25
+%_ptr_Function_v2float = OpTypePointer Function %v2float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_ed00ca = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %fract_ed00ca
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_ed00ca
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %fract_ed00ca
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.wgsl
new file mode 100644
index 0000000..1cbe7fb
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed00ca.wgsl.expected.wgsl
@@ -0,0 +1,20 @@
+fn fract_ed00ca() {
+  const arg_0 = vec2(1.25);
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed00ca();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed00ca();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed00ca();
+}
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl b/test/tint/builtins/gen/var/fract/ed2f79.wgsl
new file mode 100644
index 0000000..c2a1083
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl
@@ -0,0 +1,44 @@
+// Copyright 2022 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn fract(vec<3, fa>) -> vec<3, fa>
+fn fract_ed2f79() {
+  const arg_0 = vec3(1.25);
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed2f79();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed2f79();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed2f79();
+}
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.dxc.hlsl
new file mode 100644
index 0000000..3686b4b
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.dxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed2f79() {
+  float3 res = (0.25f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed2f79();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed2f79();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed2f79();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.fxc.hlsl
new file mode 100644
index 0000000..3686b4b
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.fxc.hlsl
@@ -0,0 +1,30 @@
+void fract_ed2f79() {
+  float3 res = (0.25f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  fract_ed2f79();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  fract_ed2f79();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  fract_ed2f79();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.glsl
new file mode 100644
index 0000000..9952c8b
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.glsl
@@ -0,0 +1,49 @@
+#version 310 es
+
+void fract_ed2f79() {
+  vec3 res = vec3(0.25f);
+}
+
+vec4 vertex_main() {
+  fract_ed2f79();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void fract_ed2f79() {
+  vec3 res = vec3(0.25f);
+}
+
+void fragment_main() {
+  fract_ed2f79();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void fract_ed2f79() {
+  vec3 res = vec3(0.25f);
+}
+
+void compute_main() {
+  fract_ed2f79();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.msl
new file mode 100644
index 0000000..64c5555
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.msl
@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void fract_ed2f79() {
+  float3 res = float3(0.25f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  fract_ed2f79();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  fract_ed2f79();
+  return;
+}
+
+kernel void compute_main() {
+  fract_ed2f79();
+  return;
+}
+
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.spvasm
new file mode 100644
index 0000000..5b6913e
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.spvasm
@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %fract_ed2f79 "fract_ed2f79"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v3float = OpTypeVector %float 3
+ %float_0_25 = OpConstant %float 0.25
+         %15 = OpConstantComposite %v3float %float_0_25 %float_0_25 %float_0_25
+%_ptr_Function_v3float = OpTypePointer Function %v3float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%fract_ed2f79 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %fract_ed2f79
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %fract_ed2f79
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %fract_ed2f79
+               OpReturn
+               OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.wgsl
new file mode 100644
index 0000000..e4dd2b6
--- /dev/null
+++ b/test/tint/builtins/gen/var/fract/ed2f79.wgsl.expected.wgsl
@@ -0,0 +1,20 @@
+fn fract_ed2f79() {
+  const arg_0 = vec3(1.25);
+  var res = fract(arg_0);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  fract_ed2f79();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  fract_ed2f79();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  fract_ed2f79();
+}
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl b/test/tint/builtins/gen/var/fract/fa5c71.wgsl
index 1f6235d..479ff32 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl
@@ -23,7 +23,7 @@
 
 // fn fract(f32) -> f32
 fn fract_fa5c71() {
-  var arg_0 = 1.f;
+  var arg_0 = 1.25f;
   var res: f32 = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.dxc.hlsl b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.dxc.hlsl
index c24fc77..0547a42 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.dxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.dxc.hlsl
@@ -1,5 +1,5 @@
 void fract_fa5c71() {
-  float arg_0 = 1.0f;
+  float arg_0 = 1.25f;
   float res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.fxc.hlsl b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.fxc.hlsl
index c24fc77..0547a42 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.fxc.hlsl
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.fxc.hlsl
@@ -1,5 +1,5 @@
 void fract_fa5c71() {
-  float arg_0 = 1.0f;
+  float arg_0 = 1.25f;
   float res = frac(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.glsl b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.glsl
index 1727089..ffe50f0 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.glsl
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.glsl
@@ -1,7 +1,7 @@
 #version 310 es
 
 void fract_fa5c71() {
-  float arg_0 = 1.0f;
+  float arg_0 = 1.25f;
   float res = fract(arg_0);
 }
 
@@ -22,7 +22,7 @@
 precision mediump float;
 
 void fract_fa5c71() {
-  float arg_0 = 1.0f;
+  float arg_0 = 1.25f;
   float res = fract(arg_0);
 }
 
@@ -37,7 +37,7 @@
 #version 310 es
 
 void fract_fa5c71() {
-  float arg_0 = 1.0f;
+  float arg_0 = 1.25f;
   float res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.msl b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.msl
index 28643cc..4a98d21 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.msl
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_fa5c71() {
-  float arg_0 = 1.0f;
+  float arg_0 = 1.25f;
   float res = fract(arg_0);
 }
 
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.spvasm b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.spvasm
index 18cc7aa..32de0e0 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.spvasm
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.spvasm
@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 33
+; Bound: 34
 ; Schema: 0
                OpCapability Shader
          %17 = OpExtInstImport "GLSL.std.450"
@@ -32,14 +32,15 @@
 %vertex_point_size = OpVariable %_ptr_Output_float Output %8
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
-    %float_1 = OpConstant %float 1
+ %float_1_25 = OpConstant %float 1.25
 %_ptr_Function_float = OpTypePointer Function %float
          %20 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %fract_fa5c71 = OpFunction %void None %9
          %12 = OpLabel
       %arg_0 = OpVariable %_ptr_Function_float Function %8
         %res = OpVariable %_ptr_Function_float Function %8
-               OpStore %arg_0 %float_1
+               OpStore %arg_0 %float_1_25
          %18 = OpLoad %float %arg_0
          %16 = OpExtInst %float %17 Fract %18
                OpStore %res %16
@@ -58,12 +59,12 @@
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %28 = OpLabel
-         %29 = OpFunctionCall %void %fract_fa5c71
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %fract_fa5c71
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %31 = OpLabel
-         %32 = OpFunctionCall %void %fract_fa5c71
+         %32 = OpLabel
+         %33 = OpFunctionCall %void %fract_fa5c71
                OpReturn
                OpFunctionEnd
diff --git a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.wgsl b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.wgsl
index e69460b..0ca4890 100644
--- a/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.wgsl
+++ b/test/tint/builtins/gen/var/fract/fa5c71.wgsl.expected.wgsl
@@ -1,5 +1,5 @@
 fn fract_fa5c71() {
-  var arg_0 = 1.0f;
+  var arg_0 = 1.25f;
   var res : f32 = fract(arg_0);
 }