[spirv] Generate IR expectations.

This CL generates the expectations for the SPIR-V IR backend.

Bug: 354711610
Change-Id: I70b32c31e9c99637f20abc3299874cec49cb1d0e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/201274
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
diff --git a/test/tint/builtins/gen/var/reverseBits/35fea9.wgsl.expected.ir.spvasm b/test/tint/builtins/gen/var/reverseBits/35fea9.wgsl.expected.ir.spvasm
new file mode 100644
index 0000000..5e6ee12
--- /dev/null
+++ b/test/tint/builtins/gen/var/reverseBits/35fea9.wgsl.expected.ir.spvasm
@@ -0,0 +1,112 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 1
+; Bound: 56
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpEntryPoint Vertex %vertex_main "vertex_main" %vertex_main_position_Output %vertex_main_loc0_Output %vertex_main___point_size_Output
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpMemberName %tint_symbol_1 0 "tint_symbol"
+               OpName %tint_symbol_1 "tint_symbol_1"
+               OpName %vertex_main_position_Output "vertex_main_position_Output"
+               OpName %vertex_main_loc0_Output "vertex_main_loc0_Output"
+               OpName %vertex_main___point_size_Output "vertex_main___point_size_Output"
+               OpName %reverseBits_35fea9 "reverseBits_35fea9"
+               OpName %arg_0 "arg_0"
+               OpName %res "res"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpMemberName %VertexOutput 0 "pos"
+               OpMemberName %VertexOutput 1 "prevent_dce"
+               OpName %VertexOutput "VertexOutput"
+               OpName %out "out"
+               OpName %vertex_main "vertex_main"
+               OpMemberDecorate %tint_symbol_1 0 Offset 0
+               OpDecorate %tint_symbol_1 Block
+               OpDecorate %1 DescriptorSet 0
+               OpDecorate %1 Binding 0
+               OpDecorate %vertex_main_position_Output BuiltIn Position
+               OpDecorate %vertex_main_loc0_Output Location 0
+               OpDecorate %vertex_main_loc0_Output Flat
+               OpDecorate %vertex_main___point_size_Output BuiltIn PointSize
+               OpMemberDecorate %VertexOutput 0 Offset 0
+               OpMemberDecorate %VertexOutput 1 Offset 16
+       %uint = OpTypeInt 32 0
+     %v4uint = OpTypeVector %uint 4
+%tint_symbol_1 = OpTypeStruct %v4uint
+%_ptr_StorageBuffer_tint_symbol_1 = OpTypePointer StorageBuffer %tint_symbol_1
+          %1 = OpVariable %_ptr_StorageBuffer_tint_symbol_1 StorageBuffer
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+%vertex_main_position_Output = OpVariable %_ptr_Output_v4float Output
+%_ptr_Output_v4uint = OpTypePointer Output %v4uint
+%vertex_main_loc0_Output = OpVariable %_ptr_Output_v4uint Output
+%_ptr_Output_float = OpTypePointer Output %float
+%vertex_main___point_size_Output = OpVariable %_ptr_Output_float Output
+         %15 = OpTypeFunction %v4uint
+%_ptr_Function_v4uint = OpTypePointer Function %v4uint
+     %uint_1 = OpConstant %uint 1
+         %19 = OpConstantComposite %v4uint %uint_1 %uint_1 %uint_1 %uint_1
+       %void = OpTypeVoid
+         %27 = OpTypeFunction %void
+%_ptr_StorageBuffer_v4uint = OpTypePointer StorageBuffer %v4uint
+     %uint_0 = OpConstant %uint 0
+%VertexOutput = OpTypeStruct %v4float %v4uint
+         %39 = OpTypeFunction %VertexOutput
+%_ptr_Function_VertexOutput = OpTypePointer Function %VertexOutput
+         %43 = OpConstantNull %VertexOutput
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %46 = OpConstantNull %v4float
+    %float_1 = OpConstant %float 1
+%reverseBits_35fea9 = OpFunction %v4uint None %15
+         %16 = OpLabel
+      %arg_0 = OpVariable %_ptr_Function_v4uint Function
+        %res = OpVariable %_ptr_Function_v4uint Function
+               OpStore %arg_0 %19
+         %21 = OpLoad %v4uint %arg_0
+         %22 = OpBitReverse %v4uint %21
+               OpStore %res %22
+         %24 = OpLoad %v4uint %res
+               OpReturnValue %24
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %27
+         %28 = OpLabel
+         %29 = OpFunctionCall %v4uint %reverseBits_35fea9
+         %30 = OpAccessChain %_ptr_StorageBuffer_v4uint %1 %uint_0
+               OpStore %30 %29
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %27
+         %34 = OpLabel
+         %35 = OpFunctionCall %v4uint %reverseBits_35fea9
+         %36 = OpAccessChain %_ptr_StorageBuffer_v4uint %1 %uint_0
+               OpStore %36 %35
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %VertexOutput None %39
+         %40 = OpLabel
+        %out = OpVariable %_ptr_Function_VertexOutput Function %43
+         %44 = OpAccessChain %_ptr_Function_v4float %out %uint_0
+               OpStore %44 %46
+         %47 = OpAccessChain %_ptr_Function_v4uint %out %uint_1
+         %48 = OpFunctionCall %v4uint %reverseBits_35fea9
+               OpStore %47 %48
+         %49 = OpLoad %VertexOutput %out
+               OpReturnValue %49
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %27
+         %51 = OpLabel
+         %52 = OpFunctionCall %VertexOutput %vertex_main_inner
+         %53 = OpCompositeExtract %v4float %52 0
+               OpStore %vertex_main_position_Output %53
+         %54 = OpCompositeExtract %v4uint %52 1
+               OpStore %vertex_main_loc0_Output %54
+               OpStore %vertex_main___point_size_Output %float_1
+               OpReturn
+               OpFunctionEnd