tint: Fix / remove tests that access OOB

With constant indices.
Also fix the SPIR-V builder tests that did something completely different from the test name / comment.

Bug: tint:1665
Change-Id: I83537cf6e44ffcb14d54de52649d1f9da1ef7e1b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101182
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/src/tint/resolver/array_accessor_test.cc b/src/tint/resolver/array_accessor_test.cc
index a07f6df..f63bb1f 100644
--- a/src/tint/resolver/array_accessor_test.cc
+++ b/src/tint/resolver/array_accessor_test.cc
@@ -102,7 +102,7 @@
 TEST_F(ResolverIndexAccessorTest, Matrix) {
     GlobalVar("my_var", ty.mat2x3<f32>(), ast::StorageClass::kPrivate);
 
-    auto* acc = IndexAccessor("my_var", 2_i);
+    auto* acc = IndexAccessor("my_var", 1_i);
     WrapInFunction(acc);
 
     EXPECT_TRUE(r()->Resolve()) << r()->error();
@@ -123,7 +123,7 @@
 TEST_F(ResolverIndexAccessorTest, Matrix_BothDimensions) {
     GlobalVar("my_var", ty.mat2x3<f32>(), ast::StorageClass::kPrivate);
 
-    auto* acc = IndexAccessor(IndexAccessor("my_var", 2_i), 1_i);
+    auto* acc = IndexAccessor(IndexAccessor("my_var", 0_i), 1_i);
     WrapInFunction(acc);
 
     EXPECT_TRUE(r()->Resolve()) << r()->error();
diff --git a/src/tint/resolver/materialize_test.cc b/src/tint/resolver/materialize_test.cc
index 239efd5..af22c53 100644
--- a/src/tint/resolver/materialize_test.cc
+++ b/src/tint/resolver/materialize_test.cc
@@ -954,14 +954,6 @@
     Method::kBitcastF32Arg,
 };
 
-/// Methods that support abstract-integer materialization
-/// Note: Doesn't contain kWorkgroupSize or kArrayLength as they have tighter constraints on the
-///       range of allowed integer values.
-constexpr Method kAIntMethods[] = {
-    Method::kSwitch,
-    Method::kIndex,
-};
-
 /// Methods that support vector materialization
 constexpr Method kVectorMethods[] = {
     Method::kLet,          Method::kVar, Method::kBuiltinArg, Method::kBitcastVec3F32Arg,
@@ -1039,11 +1031,36 @@
             Types<f32M, AFloatM>(AFloat(-kSubnormalF32), -kSubnormalF32),                       //
         })));
 
+INSTANTIATE_TEST_SUITE_P(MaterializeAInt,
+                         MaterializeAbstractNumericToDefaultType,
+                         testing::Combine(testing::Values(Expectation::kMaterialize),
+                                          testing::Values(Method::kWorkgroupSize,
+                                                          Method::kArrayLength),
+                                          testing::ValuesIn(std::vector<Data>{
+                                              Types<i32, AInt>(1_a, 1.0),          //
+                                              Types<i32, AInt>(10_a, 10.0),        //
+                                              Types<i32, AInt>(100_a, 100.0),      //
+                                              Types<i32, AInt>(1000_a, 1000.0),    //
+                                              Types<i32, AInt>(10000_a, 10000.0),  //
+                                              Types<i32, AInt>(65535_a, 65535.0),  //
+                                          })));
+
+INSTANTIATE_TEST_SUITE_P(MaterializeAIntIndex,
+                         MaterializeAbstractNumericToDefaultType,
+                         testing::Combine(testing::Values(Expectation::kMaterialize),
+                                          testing::Values(Method::kIndex),
+                                          testing::ValuesIn(std::vector<Data>{
+                                              Types<i32, AInt>(0_a, 0.0),  //
+                                              Types<i32, AInt>(1_a, 1.0),  //
+                                              Types<i32, AInt>(2_a, 2.0),  //
+                                              Types<i32, AInt>(3_a, 3.0),  //
+                                          })));
+
 INSTANTIATE_TEST_SUITE_P(
-    MaterializeAInt,
+    MaterializeAIntSwitch,
     MaterializeAbstractNumericToDefaultType,
     testing::Combine(testing::Values(Expectation::kMaterialize),
-                     testing::ValuesIn(kAIntMethods),
+                     testing::Values(Method::kSwitch),
                      testing::ValuesIn(std::vector<Data>{
                          Types<i32, AInt>(0_a, 0.0),                              //
                          Types<i32, AInt>(10_a, 10.0),                            //
@@ -1133,7 +1150,10 @@
     AIntValueCannotBeRepresented,
     MaterializeAbstractNumericToDefaultType,
     testing::Combine(testing::Values(Expectation::kValueCannotBeRepresented),
-                     testing::ValuesIn(kAIntMethods),
+                     testing::Values(Method::kWorkgroupSize,
+                                     Method::kArrayLength,
+                                     Method::kSwitch,
+                                     Method::kIndex),
                      testing::ValuesIn(std::vector<Data>{
                          Types<i32, AInt>(0_a, static_cast<double>(i32::kHighestValue) + 1),  //
                          Types<i32, AInt>(0_a, static_cast<double>(i32::kLowestValue) - 1),   //
diff --git a/src/tint/resolver/variable_test.cc b/src/tint/resolver/variable_test.cc
index 52d240c..8842141 100644
--- a/src/tint/resolver/variable_test.cc
+++ b/src/tint/resolver/variable_test.cc
@@ -466,14 +466,14 @@
     // }
     // @group(0) @binding(0) var<storage, read_write> s : S;
     // fn f() {
-    //   let p = &s.inner.arr[4];
+    //   let p = &s.inner.arr[3];
     // }
     auto* inner = Structure("Inner", utils::Vector{Member("arr", ty.array<i32, 4>())});
     auto* buf = Structure("S", utils::Vector{Member("inner", ty.Of(inner))});
     auto* storage = GlobalVar("s", ty.Of(buf), ast::StorageClass::kStorage, ast::Access::kReadWrite,
                               Binding(0_a), Group(0_a));
 
-    auto* expr = IndexAccessor(MemberAccessor(MemberAccessor(storage, "inner"), "arr"), 4_i);
+    auto* expr = IndexAccessor(MemberAccessor(MemberAccessor(storage, "inner"), "arr"), 3_i);
     auto* ptr = Let("p", AddressOf(expr));
 
     WrapInFunction(ptr);
diff --git a/src/tint/transform/std140_test.cc b/src/tint/transform/std140_test.cc
index 4681cdf..57e23e6 100644
--- a/src/tint/transform/std140_test.cc
+++ b/src/tint/transform/std140_test.cc
@@ -1584,7 +1584,7 @@
   let l_a_3_a_1       : Inner            = a[3].a[1];
   let l_a_0_a_2_m     : mat4x2<f32>      = a[0].a[2].m;
   let l_a_1_a_3_m_0   : vec2<f32>        = a[1].a[3].m[0];
-  let l_a_2_a_0_m_1_2 : f32              = a[2].a[0].m[1][2];
+  let l_a_2_a_0_m_1_0 : f32              = a[2].a[0].m[1][0];
 }
 )";
 
@@ -1647,7 +1647,7 @@
   let l_a_3_a_1 : Inner = conv_Inner(a[3u].a[1u]);
   let l_a_0_a_2_m : mat4x2<f32> = load_a_0_a_2_m();
   let l_a_1_a_3_m_0 : vec2<f32> = a[1u].a[3u].m_0;
-  let l_a_2_a_0_m_1_2 : f32 = a[2u].a[0u].m_1[2u];
+  let l_a_2_a_0_m_1_0 : f32 = a[2u].a[0u].m_1[0u];
 }
 )";
 
@@ -2029,7 +2029,7 @@
 @group(0) @binding(0) var<uniform> u : S;
 
 fn f() {
-    for (var i = u32(u.m[0][1]); i < u32(u.m[i][2]); i += u32(u.m[1][i])) {
+    for (var i = u32(u.m[0][0]); i < u32(u.m[i][1]); i += u32(u.m[1][i])) {
     }
 }
 )";
@@ -2050,16 +2050,16 @@
 
 @group(0) @binding(0) var<uniform> u : S_std140;
 
-fn load_u_m_p0_2(p0 : u32) -> f32 {
+fn load_u_m_p0_1(p0 : u32) -> f32 {
   switch(p0) {
     case 0u: {
-      return u.m_0[2u];
+      return u.m_0[1u];
     }
     case 1u: {
-      return u.m_1[2u];
+      return u.m_1[1u];
     }
     case 2u: {
-      return u.m_2[2u];
+      return u.m_2[1u];
     }
     default: {
       return f32();
@@ -2068,7 +2068,7 @@
 }
 
 fn f() {
-  for(var i = u32(u.m_0[1u]); (i < u32(load_u_m_p0_2(u32(i)))); i += u32(u.m_1[i])) {
+  for(var i = u32(u.m_0[0u]); (i < u32(load_u_m_p0_1(u32(i)))); i += u32(u.m_1[i])) {
   }
 }
 )";
diff --git a/src/tint/writer/spirv/builder_accessor_expression_test.cc b/src/tint/writer/spirv/builder_accessor_expression_test.cc
index ae755bb..5c06717 100644
--- a/src/tint/writer/spirv/builder_accessor_expression_test.cc
+++ b/src/tint/writer/spirv/builder_accessor_expression_test.cc
@@ -653,11 +653,11 @@
     Validate(b);
 }
 
-TEST_F(BuilderTest, Runtime_IndexAccessor_Nested_Array_f32) {
-    // var pos : array<array<f32, 2>, 3u>;
+TEST_F(BuilderTest, Runtime_IndexAccessor_Array_Vec3_f32) {
+    // var pos : array<vec3<f32>, 3u>;
     // var x = pos[1u][2u];
 
-    auto* pos = Var("pos", ty.array(ty.vec2<f32>(), 3_u));
+    auto* pos = Var("pos", ty.array(ty.vec3<f32>(), 3_a));
     auto* x = Var("x", IndexAccessor(IndexAccessor(pos, 1_u), 2_u));
     WrapInFunction(pos, x);
 
@@ -668,7 +668,7 @@
     EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeVoid
 %1 = OpTypeFunction %2
 %9 = OpTypeFloat 32
-%8 = OpTypeVector %9 2
+%8 = OpTypeVector %9 3
 %10 = OpTypeInt 32 0
 %11 = OpConstant %10 3
 %7 = OpTypeArray %8 %11
@@ -693,11 +693,11 @@
 }
 
 TEST_F(BuilderTest, Dynamic_IndexAccessor_Nested_Array_f32) {
-    // var pos : array<array<f32, 2>, 3u>;
+    // var pos : array<array<f32, 4>, 3u>;
     // var one = 1u;
     // var x = pos[one][2u];
 
-    auto* pos = Var("pos", ty.array(ty.vec2<f32>(), 3_u));
+    auto* pos = Var("pos", ty.array(ty.array<f32, 4>(), 3_u));
     auto* one = Var("one", Expr(2_u));
     auto* x = Var("x", IndexAccessor(IndexAccessor(pos, "one"), 2_u));
     WrapInFunction(pos, one, x);
@@ -709,27 +709,28 @@
     EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeVoid
 %1 = OpTypeFunction %2
 %9 = OpTypeFloat 32
-%8 = OpTypeVector %9 2
 %10 = OpTypeInt 32 0
-%11 = OpConstant %10 3
-%7 = OpTypeArray %8 %11
+%11 = OpConstant %10 4
+%8 = OpTypeArray %9 %11
+%12 = OpConstant %10 3
+%7 = OpTypeArray %8 %12
 %6 = OpTypePointer Function %7
-%12 = OpConstantNull %7
-%13 = OpConstant %10 2
-%15 = OpTypePointer Function %10
-%16 = OpConstantNull %10
-%18 = OpTypePointer Function %9
-%22 = OpConstantNull %9
+%13 = OpConstantNull %7
+%14 = OpConstant %10 2
+%16 = OpTypePointer Function %10
+%17 = OpConstantNull %10
+%19 = OpTypePointer Function %9
+%23 = OpConstantNull %9
 )");
-    EXPECT_EQ(DumpInstructions(b.functions()[0].variables()), R"(%5 = OpVariable %6 Function %12
-%14 = OpVariable %15 Function %16
-%21 = OpVariable %18 Function %22
+    EXPECT_EQ(DumpInstructions(b.functions()[0].variables()), R"(%5 = OpVariable %6 Function %13
+%15 = OpVariable %16 Function %17
+%22 = OpVariable %19 Function %23
 )");
-    EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"(OpStore %14 %13
-%17 = OpLoad %10 %14
-%19 = OpAccessChain %18 %5 %17 %13
-%20 = OpLoad %9 %19
-OpStore %21 %20
+    EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"(OpStore %15 %14
+%18 = OpLoad %10 %15
+%20 = OpAccessChain %19 %5 %18 %14
+%21 = OpLoad %9 %20
+OpStore %22 %21
 OpReturn
 )");
 
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm b/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm
deleted file mode 100644
index 6b6223d..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm
+++ /dev/null
@@ -1,185 +0,0 @@
-               OpCapability Shader
-          %1 = OpExtInstImport "GLSL.std.450"
-               OpMemoryModel Logical GLSL450
-               OpEntryPoint Fragment %main "main" %_GLF_color
-               OpExecutionMode %main OriginUpperLeft
-               OpSource ESSL 320
-               OpName %main "main"
-               OpName %m43 "m43"
-               OpName %buf1 "buf1"
-               OpMemberName %buf1 0 "_GLF_uniform_float_values"
-               OpName %_ ""
-               OpName %buf0 "buf0"
-               OpMemberName %buf0 0 "_GLF_uniform_int_values"
-               OpName %__0 ""
-               OpName %sums "sums"
-               OpName %i "i"
-               OpName %a "a"
-               OpName %_GLF_color "_GLF_color"
-               OpDecorate %_arr_float_uint_3 ArrayStride 16
-               OpMemberDecorate %buf1 0 Offset 0
-               OpDecorate %buf1 Block
-               OpDecorate %_ DescriptorSet 0
-               OpDecorate %_ Binding 1
-               OpDecorate %_arr_int_uint_4 ArrayStride 16
-               OpMemberDecorate %buf0 0 Offset 0
-               OpDecorate %buf0 Block
-               OpDecorate %__0 DescriptorSet 0
-               OpDecorate %__0 Binding 0
-               OpDecorate %_GLF_color Location 0
-       %void = OpTypeVoid
-         %15 = OpTypeFunction %void
-      %float = OpTypeFloat 32
-    %v3float = OpTypeVector %float 3
-%mat4v3float = OpTypeMatrix %v3float 4
-%_ptr_Function_mat4v3float = OpTypePointer Function %mat4v3float
-       %uint = OpTypeInt 32 0
-     %uint_3 = OpConstant %uint 3
-%_arr_float_uint_3 = OpTypeArray %float %uint_3
-       %buf1 = OpTypeStruct %_arr_float_uint_3
-%_ptr_Uniform_buf1 = OpTypePointer Uniform %buf1
-          %_ = OpVariable %_ptr_Uniform_buf1 Uniform
-        %int = OpTypeInt 32 1
-      %int_0 = OpConstant %int 0
-      %int_1 = OpConstant %int 1
-%_ptr_Uniform_float = OpTypePointer Uniform %float
-    %float_1 = OpConstant %float 1
-    %float_0 = OpConstant %float 0
-     %uint_4 = OpConstant %uint 4
-%_arr_int_uint_4 = OpTypeArray %int %uint_4
-       %buf0 = OpTypeStruct %_arr_int_uint_4
-%_ptr_Uniform_buf0 = OpTypePointer Uniform %buf0
-        %__0 = OpVariable %_ptr_Uniform_buf0 Uniform
-%_ptr_Uniform_int = OpTypePointer Uniform %int
-%_ptr_Function_float = OpTypePointer Function %float
-%_ptr_Function__arr_float_uint_3 = OpTypePointer Function %_arr_float_uint_3
-%_ptr_Function_int = OpTypePointer Function %int
-      %int_3 = OpConstant %int 3
-       %bool = OpTypeBool
-      %int_4 = OpConstant %int 4
-      %int_2 = OpConstant %int 2
-    %v4float = OpTypeVector %float 4
-%_ptr_Output_v4float = OpTypePointer Output %v4float
- %_GLF_color = OpVariable %_ptr_Output_v4float Output
-         %41 = OpConstantComposite %v3float %float_0 %float_0 %float_0
-       %main = OpFunction %void None %15
-         %42 = OpLabel
-        %m43 = OpVariable %_ptr_Function_mat4v3float Function
-       %sums = OpVariable %_ptr_Function__arr_float_uint_3 Function
-          %i = OpVariable %_ptr_Function_int Function
-          %a = OpVariable %_ptr_Function_int Function
-         %43 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_1
-         %44 = OpLoad %float %43
-         %45 = OpCompositeConstruct %v3float %44 %float_0 %float_0
-         %46 = OpCompositeConstruct %v3float %float_0 %44 %float_0
-         %47 = OpCompositeConstruct %v3float %float_0 %float_0 %44
-         %48 = OpCompositeConstruct %v3float %float_0 %float_0 %float_0
-         %49 = OpCompositeConstruct %mat4v3float %45 %46 %47 %41
-               OpStore %m43 %49
-         %50 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %51 = OpLoad %int %50
-         %52 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %53 = OpLoad %int %52
-         %54 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_0
-         %55 = OpLoad %float %54
-         %56 = OpAccessChain %_ptr_Function_float %m43 %51 %53
-               OpStore %56 %55
-         %57 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_0
-         %58 = OpLoad %float %57
-         %59 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_0
-         %60 = OpLoad %float %59
-         %61 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_0
-         %62 = OpLoad %float %61
-         %63 = OpCompositeConstruct %_arr_float_uint_3 %58 %60 %62
-               OpStore %sums %63
-         %64 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %65 = OpLoad %int %64
-               OpStore %i %65
-               OpBranch %66
-         %66 = OpLabel
-         %67 = OpPhi %int %65 %42 %68 %69
-               OpLoopMerge %70 %69 None
-               OpBranch %71
-         %71 = OpLabel
-         %72 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_3
-         %73 = OpLoad %int %72
-         %74 = OpSLessThan %bool %67 %73
-               OpBranchConditional %74 %75 %70
-         %75 = OpLabel
-         %76 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %77 = OpLoad %int %76
-         %78 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %79 = OpLoad %int %78
-         %80 = OpAccessChain %_ptr_Function_float %m43 %67 %79
-         %81 = OpLoad %float %80
-         %82 = OpAccessChain %_ptr_Function_float %sums %77
-         %83 = OpLoad %float %82
-         %84 = OpFAdd %float %83 %81
-         %85 = OpAccessChain %_ptr_Function_float %sums %77
-               OpStore %85 %84
-               OpBranch %69
-         %69 = OpLabel
-         %68 = OpIAdd %int %67 %int_1
-               OpStore %i %68
-               OpBranch %66
-         %70 = OpLabel
-         %86 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_1
-         %87 = OpLoad %int %86
-         %88 = OpIEqual %bool %87 %int_1
-               OpSelectionMerge %89 None
-               OpBranchConditional %88 %90 %89
-         %90 = OpLabel
-               OpStore %a %int_4
-         %91 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_2
-         %92 = OpLoad %int %91
-         %93 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %94 = OpLoad %int %93
-         %95 = OpAccessChain %_ptr_Function_float %m43 %int_4 %94
-         %96 = OpLoad %float %95
-         %97 = OpAccessChain %_ptr_Function_float %sums %92
-         %98 = OpLoad %float %97
-         %99 = OpFAdd %float %98 %96
-        %100 = OpAccessChain %_ptr_Function_float %sums %92
-               OpStore %100 %99
-               OpBranch %89
-         %89 = OpLabel
-        %101 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_1
-        %102 = OpLoad %int %101
-        %103 = OpAccessChain %_ptr_Function_float %sums %102
-        %104 = OpLoad %float %103
-        %105 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-        %106 = OpLoad %int %105
-        %107 = OpAccessChain %_ptr_Function_float %sums %106
-        %108 = OpLoad %float %107
-        %109 = OpFAdd %float %104 %108
-        %110 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_2
-        %111 = OpLoad %float %110
-        %112 = OpFOrdEqual %bool %109 %111
-               OpSelectionMerge %113 None
-               OpBranchConditional %112 %114 %115
-        %114 = OpLabel
-        %116 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-        %117 = OpLoad %int %116
-        %118 = OpConvertSToF %float %117
-        %119 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_1
-        %120 = OpLoad %int %119
-        %121 = OpConvertSToF %float %120
-        %122 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_1
-        %123 = OpLoad %int %122
-        %124 = OpConvertSToF %float %123
-        %125 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-        %126 = OpLoad %int %125
-        %127 = OpConvertSToF %float %126
-        %128 = OpCompositeConstruct %v4float %118 %121 %124 %127
-               OpStore %_GLF_color %128
-               OpBranch %113
-        %115 = OpLabel
-        %129 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_1
-        %130 = OpLoad %int %129
-        %131 = OpConvertSToF %float %130
-        %132 = OpCompositeConstruct %v4float %131 %131 %131 %131
-               OpStore %_GLF_color %132
-               OpBranch %113
-        %113 = OpLabel
-               OpReturn
-               OpFunctionEnd
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm.expected.fxc.hlsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm.expected.fxc.hlsl
deleted file mode 100644
index abb85d5..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm.expected.fxc.hlsl
+++ /dev/null
@@ -1,133 +0,0 @@
-SKIP: FAILED
-
-void set_scalar_float4x3(inout float4x3 mat, int col, int row, float val) {
-  switch (col) {
-    case 0:
-      mat[0] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[0];
-      break;
-    case 1:
-      mat[1] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[1];
-      break;
-    case 2:
-      mat[2] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[2];
-      break;
-    case 3:
-      mat[3] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[3];
-      break;
-  }
-}
-
-struct strided_arr {
-  float el;
-};
-
-cbuffer cbuffer_x_6 : register(b1, space0) {
-  uint4 x_6[3];
-};
-cbuffer cbuffer_x_8 : register(b0, space0) {
-  uint4 x_8[4];
-};
-static float4 x_GLF_color = float4(0.0f, 0.0f, 0.0f, 0.0f);
-
-void main_1() {
-  float4x3 m43 = float4x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  strided_arr sums[3] = (strided_arr[3])0;
-  int i = 0;
-  int a = 0;
-  int x_67_phi = 0;
-  const float x_44 = asfloat(x_6[1].x);
-  const float3 x_48 = (0.0f).xxx;
-  m43 = float4x3(float3(x_44, 0.0f, 0.0f), float3(0.0f, x_44, 0.0f), float3(0.0f, 0.0f, x_44), (0.0f).xxx);
-  const uint scalar_offset = ((16u * 0u)) / 4;
-  const int x_51 = asint(x_8[scalar_offset / 4][scalar_offset % 4]);
-  const uint scalar_offset_1 = ((16u * 0u)) / 4;
-  const int x_53 = asint(x_8[scalar_offset_1 / 4][scalar_offset_1 % 4]);
-  const uint scalar_offset_2 = ((16u * 0u)) / 4;
-  const float x_55 = asfloat(x_6[scalar_offset_2 / 4][scalar_offset_2 % 4]);
-  set_scalar_float4x3(m43, x_53, x_51, x_55);
-  const uint scalar_offset_3 = ((16u * 0u)) / 4;
-  const float x_58 = asfloat(x_6[scalar_offset_3 / 4][scalar_offset_3 % 4]);
-  const uint scalar_offset_4 = ((16u * 0u)) / 4;
-  const float x_60 = asfloat(x_6[scalar_offset_4 / 4][scalar_offset_4 % 4]);
-  const uint scalar_offset_5 = ((16u * 0u)) / 4;
-  const float x_62 = asfloat(x_6[scalar_offset_5 / 4][scalar_offset_5 % 4]);
-  const strided_arr tint_symbol_3 = {x_58};
-  const strided_arr tint_symbol_4 = {x_60};
-  const strided_arr tint_symbol_5 = {x_62};
-  const strided_arr tint_symbol_6[3] = {tint_symbol_3, tint_symbol_4, tint_symbol_5};
-  sums = tint_symbol_6;
-  const uint scalar_offset_6 = ((16u * 0u)) / 4;
-  const int x_65 = asint(x_8[scalar_offset_6 / 4][scalar_offset_6 % 4]);
-  i = x_65;
-  x_67_phi = x_65;
-  [loop] while (true) {
-    const int x_67 = x_67_phi;
-    const int x_73 = asint(x_8[3].x);
-    if ((x_67 < x_73)) {
-    } else {
-      break;
-    }
-    const uint scalar_offset_7 = ((16u * 0u)) / 4;
-    const int x_77 = asint(x_8[scalar_offset_7 / 4][scalar_offset_7 % 4]);
-    const uint scalar_offset_8 = ((16u * 0u)) / 4;
-    const int x_79 = asint(x_8[scalar_offset_8 / 4][scalar_offset_8 % 4]);
-    const float x_81 = m43[x_67][x_79];
-    const float x_83 = sums[x_77].el;
-    sums[x_77].el = (x_83 + x_81);
-    {
-      const int x_68 = (x_67 + 1);
-      i = x_68;
-      x_67_phi = x_68;
-    }
-  }
-  const int x_87 = asint(x_8[1].x);
-  if ((x_87 == 1)) {
-    a = 4;
-    const int x_92 = asint(x_8[2].x);
-    const uint scalar_offset_9 = ((16u * 0u)) / 4;
-    const int x_94 = asint(x_8[scalar_offset_9 / 4][scalar_offset_9 % 4]);
-    const float x_96 = m43[4][x_94];
-    const float x_98 = sums[x_92].el;
-    sums[x_92].el = (x_98 + x_96);
-  }
-  const int x_102 = asint(x_8[1].x);
-  const float x_104 = sums[x_102].el;
-  const uint scalar_offset_10 = ((16u * 0u)) / 4;
-  const int x_106 = asint(x_8[scalar_offset_10 / 4][scalar_offset_10 % 4]);
-  const float x_108 = sums[x_106].el;
-  const float x_111 = asfloat(x_6[2].x);
-  if (((x_104 + x_108) == x_111)) {
-    const uint scalar_offset_11 = ((16u * 0u)) / 4;
-    const int x_117 = asint(x_8[scalar_offset_11 / 4][scalar_offset_11 % 4]);
-    const int x_120 = asint(x_8[1].x);
-    const int x_123 = asint(x_8[1].x);
-    const uint scalar_offset_12 = ((16u * 0u)) / 4;
-    const int x_126 = asint(x_8[scalar_offset_12 / 4][scalar_offset_12 % 4]);
-    x_GLF_color = float4(float(x_117), float(x_120), float(x_123), float(x_126));
-  } else {
-    const int x_130 = asint(x_8[1].x);
-    const float x_131 = float(x_130);
-    x_GLF_color = float4(x_131, x_131, x_131, x_131);
-  }
-  return;
-}
-
-struct main_out {
-  float4 x_GLF_color_1;
-};
-struct tint_symbol {
-  float4 x_GLF_color_1 : SV_Target0;
-};
-
-main_out main_inner() {
-  main_1();
-  const main_out tint_symbol_7 = {x_GLF_color};
-  return tint_symbol_7;
-}
-
-tint_symbol main() {
-  const main_out inner_result = main_inner();
-  tint_symbol wrapper_result = (tint_symbol)0;
-  wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1;
-  return wrapper_result;
-}
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm.expected.glsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm.expected.glsl
deleted file mode 100644
index cca5043..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.spvasm.expected.glsl
+++ /dev/null
@@ -1,116 +0,0 @@
-SKIP: FAILED
-
-#version 310 es
-precision mediump float;
-
-layout(location = 0) out vec4 x_GLF_color_1_1;
-struct strided_arr {
-  float el;
-};
-
-struct strided_arr_1 {
-  int el;
-};
-
-layout(binding = 1) uniform buf1_ubo {
-  strided_arr x_GLF_uniform_float_values[3];
-} x_6;
-
-layout(binding = 0) uniform buf0_ubo {
-  strided_arr_1 x_GLF_uniform_int_values[4];
-} x_8;
-
-vec4 x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f);
-void main_1() {
-  mat4x3 m43 = mat4x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  strided_arr sums[3] = strided_arr[3](strided_arr(0.0f), strided_arr(0.0f), strided_arr(0.0f));
-  int i = 0;
-  int a = 0;
-  int x_67_phi = 0;
-  float x_44 = x_6.x_GLF_uniform_float_values[1].el;
-  vec3 x_48 = vec3(0.0f);
-  m43 = mat4x3(vec3(x_44, 0.0f, 0.0f), vec3(0.0f, x_44, 0.0f), vec3(0.0f, 0.0f, x_44), vec3(0.0f));
-  int x_51 = x_8.x_GLF_uniform_int_values[0].el;
-  int x_53 = x_8.x_GLF_uniform_int_values[0].el;
-  float x_55 = x_6.x_GLF_uniform_float_values[0].el;
-  m43[x_51][x_53] = x_55;
-  float x_58 = x_6.x_GLF_uniform_float_values[0].el;
-  float x_60 = x_6.x_GLF_uniform_float_values[0].el;
-  float x_62 = x_6.x_GLF_uniform_float_values[0].el;
-  strided_arr tint_symbol_1 = strided_arr(x_58);
-  strided_arr tint_symbol_2 = strided_arr(x_60);
-  strided_arr tint_symbol_3 = strided_arr(x_62);
-  strided_arr tint_symbol_4[3] = strided_arr[3](tint_symbol_1, tint_symbol_2, tint_symbol_3);
-  sums = tint_symbol_4;
-  int x_65 = x_8.x_GLF_uniform_int_values[0].el;
-  i = x_65;
-  x_67_phi = x_65;
-  while (true) {
-    int x_67 = x_67_phi;
-    int x_73 = x_8.x_GLF_uniform_int_values[3].el;
-    if ((x_67 < x_73)) {
-    } else {
-      break;
-    }
-    int x_77 = x_8.x_GLF_uniform_int_values[0].el;
-    int x_79 = x_8.x_GLF_uniform_int_values[0].el;
-    float x_81 = m43[x_67][x_79];
-    float x_83 = sums[x_77].el;
-    sums[x_77].el = (x_83 + x_81);
-    {
-      int x_68 = (x_67 + 1);
-      i = x_68;
-      x_67_phi = x_68;
-    }
-  }
-  int x_87 = x_8.x_GLF_uniform_int_values[1].el;
-  if ((x_87 == 1)) {
-    a = 4;
-    int x_92 = x_8.x_GLF_uniform_int_values[2].el;
-    int x_94 = x_8.x_GLF_uniform_int_values[0].el;
-    float x_96 = m43[4][x_94];
-    float x_98 = sums[x_92].el;
-    sums[x_92].el = (x_98 + x_96);
-  }
-  int x_102 = x_8.x_GLF_uniform_int_values[1].el;
-  float x_104 = sums[x_102].el;
-  int x_106 = x_8.x_GLF_uniform_int_values[0].el;
-  float x_108 = sums[x_106].el;
-  float x_111 = x_6.x_GLF_uniform_float_values[2].el;
-  if (((x_104 + x_108) == x_111)) {
-    int x_117 = x_8.x_GLF_uniform_int_values[0].el;
-    int x_120 = x_8.x_GLF_uniform_int_values[1].el;
-    int x_123 = x_8.x_GLF_uniform_int_values[1].el;
-    int x_126 = x_8.x_GLF_uniform_int_values[0].el;
-    x_GLF_color = vec4(float(x_117), float(x_120), float(x_123), float(x_126));
-  } else {
-    int x_130 = x_8.x_GLF_uniform_int_values[1].el;
-    float x_131 = float(x_130);
-    x_GLF_color = vec4(x_131, x_131, x_131, x_131);
-  }
-  return;
-}
-
-struct main_out {
-  vec4 x_GLF_color_1;
-};
-
-main_out tint_symbol() {
-  main_1();
-  main_out tint_symbol_5 = main_out(x_GLF_color);
-  return tint_symbol_5;
-}
-
-void main() {
-  main_out inner_result = tint_symbol();
-  x_GLF_color_1_1 = inner_result.x_GLF_color_1;
-  return;
-}
-Error parsing GLSL shader:
-ERROR: 0:69: '[' :  matrix index out of range '4'
-ERROR: 0:69: '=' :  cannot convert from ' temp mediump 3-component vector of float' to ' temp mediump float'
-ERROR: 0:69: '' : compilation terminated
-ERROR: 3 compilation errors.  No code generated.
-
-
-
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl
deleted file mode 100644
index 006779f..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl
+++ /dev/null
@@ -1,105 +0,0 @@
-struct strided_arr {
-  @size(16)
-  el : f32,
-}
-
-type Arr = array<strided_arr, 3u>;
-
-struct buf1 {
-  x_GLF_uniform_float_values : Arr,
-}
-
-struct strided_arr_1 {
-  @size(16)
-  el : i32,
-}
-
-type Arr_1 = array<strided_arr_1, 4u>;
-
-struct buf0 {
-  x_GLF_uniform_int_values : Arr_1,
-}
-
-@group(0) @binding(1) var<uniform> x_6 : buf1;
-
-@group(0) @binding(0) var<uniform> x_8 : buf0;
-
-var<private> x_GLF_color : vec4<f32>;
-
-fn main_1() {
-  var m43 : mat4x3<f32>;
-  var sums : Arr;
-  var i : i32;
-  var a : i32;
-  var x_67_phi : i32;
-  let x_44 : f32 = x_6.x_GLF_uniform_float_values[1].el;
-  let x_48 : vec3<f32> = vec3<f32>(0.0, 0.0, 0.0);
-  m43 = mat4x3<f32>(vec3<f32>(x_44, 0.0, 0.0), vec3<f32>(0.0, x_44, 0.0), vec3<f32>(0.0, 0.0, x_44), vec3<f32>(0.0, 0.0, 0.0));
-  let x_51 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-  let x_53 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-  let x_55 : f32 = x_6.x_GLF_uniform_float_values[0].el;
-  m43[x_51][x_53] = x_55;
-  let x_58 : f32 = x_6.x_GLF_uniform_float_values[0].el;
-  let x_60 : f32 = x_6.x_GLF_uniform_float_values[0].el;
-  let x_62 : f32 = x_6.x_GLF_uniform_float_values[0].el;
-  sums = Arr(strided_arr(x_58), strided_arr(x_60), strided_arr(x_62));
-  let x_65 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-  i = x_65;
-  x_67_phi = x_65;
-  loop {
-    let x_67 : i32 = x_67_phi;
-    let x_73 : i32 = x_8.x_GLF_uniform_int_values[3].el;
-    if ((x_67 < x_73)) {
-    } else {
-      break;
-    }
-    let x_77 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-    let x_79 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-    let x_81 : f32 = m43[x_67][x_79];
-    let x_83 : f32 = sums[x_77].el;
-    sums[x_77].el = (x_83 + x_81);
-
-    continuing {
-      let x_68 : i32 = (x_67 + 1);
-      i = x_68;
-      x_67_phi = x_68;
-    }
-  }
-  let x_87 : i32 = x_8.x_GLF_uniform_int_values[1].el;
-  if ((x_87 == 1)) {
-    a = 4;
-    let x_92 : i32 = x_8.x_GLF_uniform_int_values[2].el;
-    let x_94 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-    let x_96 : f32 = m43[4][x_94];
-    let x_98 : f32 = sums[x_92].el;
-    sums[x_92].el = (x_98 + x_96);
-  }
-  let x_102 : i32 = x_8.x_GLF_uniform_int_values[1].el;
-  let x_104 : f32 = sums[x_102].el;
-  let x_106 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-  let x_108 : f32 = sums[x_106].el;
-  let x_111 : f32 = x_6.x_GLF_uniform_float_values[2].el;
-  if (((x_104 + x_108) == x_111)) {
-    let x_117 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-    let x_120 : i32 = x_8.x_GLF_uniform_int_values[1].el;
-    let x_123 : i32 = x_8.x_GLF_uniform_int_values[1].el;
-    let x_126 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-    x_GLF_color = vec4<f32>(f32(x_117), f32(x_120), f32(x_123), f32(x_126));
-  } else {
-    let x_130 : i32 = x_8.x_GLF_uniform_int_values[1].el;
-    let x_131 : f32 = f32(x_130);
-    x_GLF_color = vec4<f32>(x_131, x_131, x_131, x_131);
-  }
-  return;
-}
-
-struct main_out {
-  @location(0)
-  x_GLF_color_1 : vec4<f32>,
-}
-
-@fragment
-fn main() -> main_out {
-  main_1();
-  return main_out(x_GLF_color);
-}
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl.expected.fxc.hlsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl.expected.fxc.hlsl
deleted file mode 100644
index abb85d5..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl.expected.fxc.hlsl
+++ /dev/null
@@ -1,133 +0,0 @@
-SKIP: FAILED
-
-void set_scalar_float4x3(inout float4x3 mat, int col, int row, float val) {
-  switch (col) {
-    case 0:
-      mat[0] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[0];
-      break;
-    case 1:
-      mat[1] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[1];
-      break;
-    case 2:
-      mat[2] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[2];
-      break;
-    case 3:
-      mat[3] = (row.xxx == int3(0, 1, 2)) ? val.xxx : mat[3];
-      break;
-  }
-}
-
-struct strided_arr {
-  float el;
-};
-
-cbuffer cbuffer_x_6 : register(b1, space0) {
-  uint4 x_6[3];
-};
-cbuffer cbuffer_x_8 : register(b0, space0) {
-  uint4 x_8[4];
-};
-static float4 x_GLF_color = float4(0.0f, 0.0f, 0.0f, 0.0f);
-
-void main_1() {
-  float4x3 m43 = float4x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  strided_arr sums[3] = (strided_arr[3])0;
-  int i = 0;
-  int a = 0;
-  int x_67_phi = 0;
-  const float x_44 = asfloat(x_6[1].x);
-  const float3 x_48 = (0.0f).xxx;
-  m43 = float4x3(float3(x_44, 0.0f, 0.0f), float3(0.0f, x_44, 0.0f), float3(0.0f, 0.0f, x_44), (0.0f).xxx);
-  const uint scalar_offset = ((16u * 0u)) / 4;
-  const int x_51 = asint(x_8[scalar_offset / 4][scalar_offset % 4]);
-  const uint scalar_offset_1 = ((16u * 0u)) / 4;
-  const int x_53 = asint(x_8[scalar_offset_1 / 4][scalar_offset_1 % 4]);
-  const uint scalar_offset_2 = ((16u * 0u)) / 4;
-  const float x_55 = asfloat(x_6[scalar_offset_2 / 4][scalar_offset_2 % 4]);
-  set_scalar_float4x3(m43, x_53, x_51, x_55);
-  const uint scalar_offset_3 = ((16u * 0u)) / 4;
-  const float x_58 = asfloat(x_6[scalar_offset_3 / 4][scalar_offset_3 % 4]);
-  const uint scalar_offset_4 = ((16u * 0u)) / 4;
-  const float x_60 = asfloat(x_6[scalar_offset_4 / 4][scalar_offset_4 % 4]);
-  const uint scalar_offset_5 = ((16u * 0u)) / 4;
-  const float x_62 = asfloat(x_6[scalar_offset_5 / 4][scalar_offset_5 % 4]);
-  const strided_arr tint_symbol_3 = {x_58};
-  const strided_arr tint_symbol_4 = {x_60};
-  const strided_arr tint_symbol_5 = {x_62};
-  const strided_arr tint_symbol_6[3] = {tint_symbol_3, tint_symbol_4, tint_symbol_5};
-  sums = tint_symbol_6;
-  const uint scalar_offset_6 = ((16u * 0u)) / 4;
-  const int x_65 = asint(x_8[scalar_offset_6 / 4][scalar_offset_6 % 4]);
-  i = x_65;
-  x_67_phi = x_65;
-  [loop] while (true) {
-    const int x_67 = x_67_phi;
-    const int x_73 = asint(x_8[3].x);
-    if ((x_67 < x_73)) {
-    } else {
-      break;
-    }
-    const uint scalar_offset_7 = ((16u * 0u)) / 4;
-    const int x_77 = asint(x_8[scalar_offset_7 / 4][scalar_offset_7 % 4]);
-    const uint scalar_offset_8 = ((16u * 0u)) / 4;
-    const int x_79 = asint(x_8[scalar_offset_8 / 4][scalar_offset_8 % 4]);
-    const float x_81 = m43[x_67][x_79];
-    const float x_83 = sums[x_77].el;
-    sums[x_77].el = (x_83 + x_81);
-    {
-      const int x_68 = (x_67 + 1);
-      i = x_68;
-      x_67_phi = x_68;
-    }
-  }
-  const int x_87 = asint(x_8[1].x);
-  if ((x_87 == 1)) {
-    a = 4;
-    const int x_92 = asint(x_8[2].x);
-    const uint scalar_offset_9 = ((16u * 0u)) / 4;
-    const int x_94 = asint(x_8[scalar_offset_9 / 4][scalar_offset_9 % 4]);
-    const float x_96 = m43[4][x_94];
-    const float x_98 = sums[x_92].el;
-    sums[x_92].el = (x_98 + x_96);
-  }
-  const int x_102 = asint(x_8[1].x);
-  const float x_104 = sums[x_102].el;
-  const uint scalar_offset_10 = ((16u * 0u)) / 4;
-  const int x_106 = asint(x_8[scalar_offset_10 / 4][scalar_offset_10 % 4]);
-  const float x_108 = sums[x_106].el;
-  const float x_111 = asfloat(x_6[2].x);
-  if (((x_104 + x_108) == x_111)) {
-    const uint scalar_offset_11 = ((16u * 0u)) / 4;
-    const int x_117 = asint(x_8[scalar_offset_11 / 4][scalar_offset_11 % 4]);
-    const int x_120 = asint(x_8[1].x);
-    const int x_123 = asint(x_8[1].x);
-    const uint scalar_offset_12 = ((16u * 0u)) / 4;
-    const int x_126 = asint(x_8[scalar_offset_12 / 4][scalar_offset_12 % 4]);
-    x_GLF_color = float4(float(x_117), float(x_120), float(x_123), float(x_126));
-  } else {
-    const int x_130 = asint(x_8[1].x);
-    const float x_131 = float(x_130);
-    x_GLF_color = float4(x_131, x_131, x_131, x_131);
-  }
-  return;
-}
-
-struct main_out {
-  float4 x_GLF_color_1;
-};
-struct tint_symbol {
-  float4 x_GLF_color_1 : SV_Target0;
-};
-
-main_out main_inner() {
-  main_1();
-  const main_out tint_symbol_7 = {x_GLF_color};
-  return tint_symbol_7;
-}
-
-tint_symbol main() {
-  const main_out inner_result = main_inner();
-  tint_symbol wrapper_result = (tint_symbol)0;
-  wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1;
-  return wrapper_result;
-}
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl.expected.glsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl.expected.glsl
deleted file mode 100644
index cca5043..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-unused-access-past-matrix-elements/0-opt.wgsl.expected.glsl
+++ /dev/null
@@ -1,116 +0,0 @@
-SKIP: FAILED
-
-#version 310 es
-precision mediump float;
-
-layout(location = 0) out vec4 x_GLF_color_1_1;
-struct strided_arr {
-  float el;
-};
-
-struct strided_arr_1 {
-  int el;
-};
-
-layout(binding = 1) uniform buf1_ubo {
-  strided_arr x_GLF_uniform_float_values[3];
-} x_6;
-
-layout(binding = 0) uniform buf0_ubo {
-  strided_arr_1 x_GLF_uniform_int_values[4];
-} x_8;
-
-vec4 x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f);
-void main_1() {
-  mat4x3 m43 = mat4x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  strided_arr sums[3] = strided_arr[3](strided_arr(0.0f), strided_arr(0.0f), strided_arr(0.0f));
-  int i = 0;
-  int a = 0;
-  int x_67_phi = 0;
-  float x_44 = x_6.x_GLF_uniform_float_values[1].el;
-  vec3 x_48 = vec3(0.0f);
-  m43 = mat4x3(vec3(x_44, 0.0f, 0.0f), vec3(0.0f, x_44, 0.0f), vec3(0.0f, 0.0f, x_44), vec3(0.0f));
-  int x_51 = x_8.x_GLF_uniform_int_values[0].el;
-  int x_53 = x_8.x_GLF_uniform_int_values[0].el;
-  float x_55 = x_6.x_GLF_uniform_float_values[0].el;
-  m43[x_51][x_53] = x_55;
-  float x_58 = x_6.x_GLF_uniform_float_values[0].el;
-  float x_60 = x_6.x_GLF_uniform_float_values[0].el;
-  float x_62 = x_6.x_GLF_uniform_float_values[0].el;
-  strided_arr tint_symbol_1 = strided_arr(x_58);
-  strided_arr tint_symbol_2 = strided_arr(x_60);
-  strided_arr tint_symbol_3 = strided_arr(x_62);
-  strided_arr tint_symbol_4[3] = strided_arr[3](tint_symbol_1, tint_symbol_2, tint_symbol_3);
-  sums = tint_symbol_4;
-  int x_65 = x_8.x_GLF_uniform_int_values[0].el;
-  i = x_65;
-  x_67_phi = x_65;
-  while (true) {
-    int x_67 = x_67_phi;
-    int x_73 = x_8.x_GLF_uniform_int_values[3].el;
-    if ((x_67 < x_73)) {
-    } else {
-      break;
-    }
-    int x_77 = x_8.x_GLF_uniform_int_values[0].el;
-    int x_79 = x_8.x_GLF_uniform_int_values[0].el;
-    float x_81 = m43[x_67][x_79];
-    float x_83 = sums[x_77].el;
-    sums[x_77].el = (x_83 + x_81);
-    {
-      int x_68 = (x_67 + 1);
-      i = x_68;
-      x_67_phi = x_68;
-    }
-  }
-  int x_87 = x_8.x_GLF_uniform_int_values[1].el;
-  if ((x_87 == 1)) {
-    a = 4;
-    int x_92 = x_8.x_GLF_uniform_int_values[2].el;
-    int x_94 = x_8.x_GLF_uniform_int_values[0].el;
-    float x_96 = m43[4][x_94];
-    float x_98 = sums[x_92].el;
-    sums[x_92].el = (x_98 + x_96);
-  }
-  int x_102 = x_8.x_GLF_uniform_int_values[1].el;
-  float x_104 = sums[x_102].el;
-  int x_106 = x_8.x_GLF_uniform_int_values[0].el;
-  float x_108 = sums[x_106].el;
-  float x_111 = x_6.x_GLF_uniform_float_values[2].el;
-  if (((x_104 + x_108) == x_111)) {
-    int x_117 = x_8.x_GLF_uniform_int_values[0].el;
-    int x_120 = x_8.x_GLF_uniform_int_values[1].el;
-    int x_123 = x_8.x_GLF_uniform_int_values[1].el;
-    int x_126 = x_8.x_GLF_uniform_int_values[0].el;
-    x_GLF_color = vec4(float(x_117), float(x_120), float(x_123), float(x_126));
-  } else {
-    int x_130 = x_8.x_GLF_uniform_int_values[1].el;
-    float x_131 = float(x_130);
-    x_GLF_color = vec4(x_131, x_131, x_131, x_131);
-  }
-  return;
-}
-
-struct main_out {
-  vec4 x_GLF_color_1;
-};
-
-main_out tint_symbol() {
-  main_1();
-  main_out tint_symbol_5 = main_out(x_GLF_color);
-  return tint_symbol_5;
-}
-
-void main() {
-  main_out inner_result = tint_symbol();
-  x_GLF_color_1_1 = inner_result.x_GLF_color_1;
-  return;
-}
-Error parsing GLSL shader:
-ERROR: 0:69: '[' :  matrix index out of range '4'
-ERROR: 0:69: '=' :  cannot convert from ' temp mediump 3-component vector of float' to ' temp mediump float'
-ERROR: 0:69: '' : compilation terminated
-ERROR: 3 compilation errors.  No code generated.
-
-
-
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.spvasm b/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.spvasm
deleted file mode 100644
index 97dd177..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.spvasm
+++ /dev/null
@@ -1,112 +0,0 @@
-               OpCapability Shader
-          %1 = OpExtInstImport "GLSL.std.450"
-               OpMemoryModel Logical GLSL450
-               OpEntryPoint Fragment %main "main" %_GLF_color
-               OpExecutionMode %main OriginUpperLeft
-               OpSource ESSL 320
-               OpName %main "main"
-               OpName %m32 "m32"
-               OpName %buf1 "buf1"
-               OpMemberName %buf1 0 "_GLF_uniform_float_values"
-               OpName %_ ""
-               OpName %buf0 "buf0"
-               OpMemberName %buf0 0 "_GLF_uniform_int_values"
-               OpName %__0 ""
-               OpName %sums "sums"
-               OpName %_GLF_color "_GLF_color"
-               OpDecorate %_arr_float_uint_2 ArrayStride 16
-               OpMemberDecorate %buf1 0 Offset 0
-               OpDecorate %buf1 Block
-               OpDecorate %_ DescriptorSet 0
-               OpDecorate %_ Binding 1
-               OpDecorate %_arr_int_uint_3 ArrayStride 16
-               OpMemberDecorate %buf0 0 Offset 0
-               OpDecorate %buf0 Block
-               OpDecorate %__0 DescriptorSet 0
-               OpDecorate %__0 Binding 0
-               OpDecorate %_GLF_color Location 0
-       %void = OpTypeVoid
-         %13 = OpTypeFunction %void
-      %float = OpTypeFloat 32
-    %v2float = OpTypeVector %float 2
-%mat3v2float = OpTypeMatrix %v2float 3
-%_ptr_Function_mat3v2float = OpTypePointer Function %mat3v2float
-       %uint = OpTypeInt 32 0
-     %uint_2 = OpConstant %uint 2
-%_arr_float_uint_2 = OpTypeArray %float %uint_2
-       %buf1 = OpTypeStruct %_arr_float_uint_2
-%_ptr_Uniform_buf1 = OpTypePointer Uniform %buf1
-          %_ = OpVariable %_ptr_Uniform_buf1 Uniform
-        %int = OpTypeInt 32 1
-      %int_0 = OpConstant %int 0
-%_ptr_Uniform_float = OpTypePointer Uniform %float
-    %float_0 = OpConstant %float 0
-      %int_3 = OpConstant %int 3
-     %uint_3 = OpConstant %uint 3
-%_arr_int_uint_3 = OpTypeArray %int %uint_3
-       %buf0 = OpTypeStruct %_arr_int_uint_3
-%_ptr_Uniform_buf0 = OpTypePointer Uniform %buf0
-        %__0 = OpVariable %_ptr_Uniform_buf0 Uniform
-%_ptr_Uniform_int = OpTypePointer Uniform %int
-      %int_1 = OpConstant %int 1
-       %bool = OpTypeBool
-%_ptr_Function_float = OpTypePointer Function %float
-%_arr_float_uint_3 = OpTypeArray %float %uint_3
-%_ptr_Function__arr_float_uint_3 = OpTypePointer Function %_arr_float_uint_3
-      %int_2 = OpConstant %int 2
-    %v4float = OpTypeVector %float 4
-%_ptr_Output_v4float = OpTypePointer Output %v4float
- %_GLF_color = OpVariable %_ptr_Output_v4float Output
-         %37 = OpConstantComposite %v2float %float_0 %float_0
-       %main = OpFunction %void None %13
-         %38 = OpLabel
-        %m32 = OpVariable %_ptr_Function_mat3v2float Function
-       %sums = OpVariable %_ptr_Function__arr_float_uint_3 Function
-         %39 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_0
-         %40 = OpLoad %float %39
-         %41 = OpCompositeConstruct %v2float %40 %float_0
-         %42 = OpCompositeConstruct %v2float %float_0 %40
-         %43 = OpCompositeConstruct %mat3v2float %41 %42 %37
-               OpStore %m32 %43
-         %44 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_0
-         %45 = OpLoad %int %44
-         %46 = OpIEqual %bool %45 %int_1
-               OpSelectionMerge %47 None
-               OpBranchConditional %46 %48 %47
-         %48 = OpLabel
-         %49 = OpAccessChain %_ptr_Function_float %m32 %int_3 %45
-               OpStore %49 %40
-               OpBranch %47
-         %47 = OpLabel
-         %50 = OpCompositeConstruct %_arr_float_uint_3 %40 %40 %40
-               OpStore %sums %50
-               OpBranch %51
-         %51 = OpLabel
-         %52 = OpPhi %int %45 %47 %53 %54
-         %55 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_2
-         %56 = OpLoad %int %55
-         %57 = OpSLessThan %bool %52 %56
-               OpLoopMerge %58 %54 None
-               OpBranchConditional %57 %54 %58
-         %54 = OpLabel
-         %59 = OpAccessChain %_ptr_Function_float %m32 %52 %45
-         %60 = OpLoad %float %59
-         %61 = OpAccessChain %_ptr_Function_float %sums %56
-         %62 = OpLoad %float %61
-         %63 = OpFAdd %float %62 %60
-               OpStore %61 %63
-         %53 = OpIAdd %int %52 %int_1
-               OpBranch %51
-         %58 = OpLabel
-         %64 = OpAccessChain %_ptr_Function_float %sums %45
-         %65 = OpLoad %float %64
-         %66 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %int_1
-         %67 = OpLoad %float %66
-         %68 = OpAccessChain %_ptr_Uniform_int %__0 %int_0 %int_1
-         %69 = OpLoad %int %68
-         %70 = OpAccessChain %_ptr_Function_float %sums %69
-         %71 = OpLoad %float %70
-         %72 = OpCompositeConstruct %v4float %65 %67 %67 %71
-               OpStore %_GLF_color %72
-               OpReturn
-               OpFunctionEnd
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.spvasm.expected.glsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.spvasm.expected.glsl
deleted file mode 100644
index 76ec7b3..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.spvasm.expected.glsl
+++ /dev/null
@@ -1,83 +0,0 @@
-SKIP: FAILED
-
-#version 310 es
-precision mediump float;
-
-layout(location = 0) out vec4 x_GLF_color_1_1;
-struct strided_arr {
-  float el;
-};
-
-struct strided_arr_1 {
-  int el;
-};
-
-layout(binding = 1) uniform buf1_ubo {
-  strided_arr x_GLF_uniform_float_values[2];
-} x_6;
-
-layout(binding = 0) uniform buf0_ubo {
-  strided_arr_1 x_GLF_uniform_int_values[3];
-} x_8;
-
-vec4 x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f);
-void main_1() {
-  mat3x2 m32 = mat3x2(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  float sums[3] = float[3](0.0f, 0.0f, 0.0f);
-  int x_52_phi = 0;
-  float x_40 = x_6.x_GLF_uniform_float_values[0].el;
-  m32 = mat3x2(vec2(x_40, 0.0f), vec2(0.0f, x_40), vec2(0.0f));
-  int x_45 = x_8.x_GLF_uniform_int_values[0].el;
-  if ((x_45 == 1)) {
-    m32[3][x_45] = x_40;
-  }
-  float tint_symbol_1[3] = float[3](x_40, x_40, x_40);
-  sums = tint_symbol_1;
-  x_52_phi = x_45;
-  while (true) {
-    int x_53 = 0;
-    int x_52 = x_52_phi;
-    int x_56 = x_8.x_GLF_uniform_int_values[2].el;
-    if ((x_52 < x_56)) {
-    } else {
-      break;
-    }
-    {
-      float x_60 = m32[x_52][x_45];
-      int x_61_save = x_56;
-      float x_62 = sums[x_61_save];
-      sums[x_61_save] = (x_62 + x_60);
-      x_53 = (x_52 + 1);
-      x_52_phi = x_53;
-    }
-  }
-  float x_65 = sums[x_45];
-  float x_67 = x_6.x_GLF_uniform_float_values[1].el;
-  int x_69 = x_8.x_GLF_uniform_int_values[1].el;
-  float x_71 = sums[x_69];
-  x_GLF_color = vec4(x_65, x_67, x_67, x_71);
-  return;
-}
-
-struct main_out {
-  vec4 x_GLF_color_1;
-};
-
-main_out tint_symbol() {
-  main_1();
-  main_out tint_symbol_2 = main_out(x_GLF_color);
-  return tint_symbol_2;
-}
-
-void main() {
-  main_out inner_result = tint_symbol();
-  x_GLF_color_1_1 = inner_result.x_GLF_color_1;
-  return;
-}
-Error parsing GLSL shader:
-ERROR: 0:30: '[' :  matrix index out of range '3'
-ERROR: 0:30: '' : compilation terminated
-ERROR: 2 compilation errors.  No code generated.
-
-
-
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.wgsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.wgsl
deleted file mode 100644
index e1d29af..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.wgsl
+++ /dev/null
@@ -1,76 +0,0 @@
-struct strided_arr {
-  @size(16)
-  el : f32,
-}
-
-type Arr = array<strided_arr, 2u>;
-
-struct buf1 {
-  x_GLF_uniform_float_values : Arr,
-}
-
-struct strided_arr_1 {
-  @size(16)
-  el : i32,
-}
-
-type Arr_1 = array<strided_arr_1, 3u>;
-
-struct buf0 {
-  x_GLF_uniform_int_values : Arr_1,
-}
-
-@group(0) @binding(1) var<uniform> x_6 : buf1;
-
-@group(0) @binding(0) var<uniform> x_8 : buf0;
-
-var<private> x_GLF_color : vec4<f32>;
-
-fn main_1() {
-  var m32 : mat3x2<f32>;
-  var sums : array<f32, 3u>;
-  var x_52_phi : i32;
-  let x_40 : f32 = x_6.x_GLF_uniform_float_values[0].el;
-  m32 = mat3x2<f32>(vec2<f32>(x_40, 0.0), vec2<f32>(0.0, x_40), vec2<f32>(0.0, 0.0));
-  let x_45 : i32 = x_8.x_GLF_uniform_int_values[0].el;
-  if ((x_45 == 1)) {
-    m32[3][x_45] = x_40;
-  }
-  sums = array<f32, 3u>(x_40, x_40, x_40);
-  x_52_phi = x_45;
-  loop {
-    var x_53 : i32;
-    let x_52 : i32 = x_52_phi;
-    let x_56 : i32 = x_8.x_GLF_uniform_int_values[2].el;
-    if ((x_52 < x_56)) {
-    } else {
-      break;
-    }
-
-    continuing {
-      let x_60 : f32 = m32[x_52][x_45];
-      let x_61_save = x_56;
-      let x_62 : f32 = sums[x_61_save];
-      sums[x_61_save] = (x_62 + x_60);
-      x_53 = (x_52 + 1);
-      x_52_phi = x_53;
-    }
-  }
-  let x_65 : f32 = sums[x_45];
-  let x_67 : f32 = x_6.x_GLF_uniform_float_values[1].el;
-  let x_69 : i32 = x_8.x_GLF_uniform_int_values[1].el;
-  let x_71 : f32 = sums[x_69];
-  x_GLF_color = vec4<f32>(x_65, x_67, x_67, x_71);
-  return;
-}
-
-struct main_out {
-  @location(0)
-  x_GLF_color_1 : vec4<f32>,
-}
-
-@fragment
-fn main() -> main_out {
-  main_1();
-  return main_out(x_GLF_color);
-}
diff --git a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.wgsl.expected.glsl b/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.wgsl.expected.glsl
deleted file mode 100644
index 76ec7b3..0000000
--- a/test/tint/vk-gl-cts/graphicsfuzz/cov-write-past-matrix-elements-unused/0.wgsl.expected.glsl
+++ /dev/null
@@ -1,83 +0,0 @@
-SKIP: FAILED
-
-#version 310 es
-precision mediump float;
-
-layout(location = 0) out vec4 x_GLF_color_1_1;
-struct strided_arr {
-  float el;
-};
-
-struct strided_arr_1 {
-  int el;
-};
-
-layout(binding = 1) uniform buf1_ubo {
-  strided_arr x_GLF_uniform_float_values[2];
-} x_6;
-
-layout(binding = 0) uniform buf0_ubo {
-  strided_arr_1 x_GLF_uniform_int_values[3];
-} x_8;
-
-vec4 x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f);
-void main_1() {
-  mat3x2 m32 = mat3x2(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  float sums[3] = float[3](0.0f, 0.0f, 0.0f);
-  int x_52_phi = 0;
-  float x_40 = x_6.x_GLF_uniform_float_values[0].el;
-  m32 = mat3x2(vec2(x_40, 0.0f), vec2(0.0f, x_40), vec2(0.0f));
-  int x_45 = x_8.x_GLF_uniform_int_values[0].el;
-  if ((x_45 == 1)) {
-    m32[3][x_45] = x_40;
-  }
-  float tint_symbol_1[3] = float[3](x_40, x_40, x_40);
-  sums = tint_symbol_1;
-  x_52_phi = x_45;
-  while (true) {
-    int x_53 = 0;
-    int x_52 = x_52_phi;
-    int x_56 = x_8.x_GLF_uniform_int_values[2].el;
-    if ((x_52 < x_56)) {
-    } else {
-      break;
-    }
-    {
-      float x_60 = m32[x_52][x_45];
-      int x_61_save = x_56;
-      float x_62 = sums[x_61_save];
-      sums[x_61_save] = (x_62 + x_60);
-      x_53 = (x_52 + 1);
-      x_52_phi = x_53;
-    }
-  }
-  float x_65 = sums[x_45];
-  float x_67 = x_6.x_GLF_uniform_float_values[1].el;
-  int x_69 = x_8.x_GLF_uniform_int_values[1].el;
-  float x_71 = sums[x_69];
-  x_GLF_color = vec4(x_65, x_67, x_67, x_71);
-  return;
-}
-
-struct main_out {
-  vec4 x_GLF_color_1;
-};
-
-main_out tint_symbol() {
-  main_1();
-  main_out tint_symbol_2 = main_out(x_GLF_color);
-  return tint_symbol_2;
-}
-
-void main() {
-  main_out inner_result = tint_symbol();
-  x_GLF_color_1_1 = inner_result.x_GLF_color_1;
-  return;
-}
-Error parsing GLSL shader:
-ERROR: 0:30: '[' :  matrix index out of range '3'
-ERROR: 0:30: '' : compilation terminated
-ERROR: 2 compilation errors.  No code generated.
-
-
-