Add test for CompositeExtract from row-major loaded vector.
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#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct SSBORow
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{
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float v;
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float4x4 row_major0;
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};
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kernel void main0(device SSBORow& _4 [[buffer(0)]])
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{
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_4.v = float4(_4.row_major0[0][1], _4.row_major0[1][1], _4.row_major0[2][1], _4.row_major0[3][1])[2];
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}
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; SPIR-V
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; Version: 1.0
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; Generator: Khronos Glslang Reference Front End; 7
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; Bound: 21
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; Schema: 0
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint GLCompute %main "main"
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OpExecutionMode %main LocalSize 1 1 1
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OpSource GLSL 450
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OpName %main "main"
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OpName %SSBORow "SSBORow"
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OpMemberName %SSBORow 0 "v"
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OpMemberName %SSBORow 1 "row_major0"
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OpName %_ ""
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OpMemberDecorate %SSBORow 0 Offset 0
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OpMemberDecorate %SSBORow 1 RowMajor
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OpMemberDecorate %SSBORow 1 Offset 16
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OpMemberDecorate %SSBORow 1 MatrixStride 16
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OpDecorate %SSBORow BufferBlock
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OpDecorate %_ DescriptorSet 0
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OpDecorate %_ Binding 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%mat4v4float = OpTypeMatrix %v4float 4
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%SSBORow = OpTypeStruct %float %mat4v4float
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%_ptr_Uniform_SSBORow = OpTypePointer Uniform %SSBORow
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%_ = OpVariable %_ptr_Uniform_SSBORow Uniform
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%int_1 = OpConstant %int 1
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%uint = OpTypeInt 32 0
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%uint_2 = OpConstant %uint 2
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%_ptr_Uniform_float = OpTypePointer Uniform %float
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%_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
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%main = OpFunction %void None %3
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%5 = OpLabel
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%row_ptr = OpAccessChain %_ptr_Uniform_v4float %_ %int_1 %int_1
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%vec = OpLoad %v4float %row_ptr
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%float_val = OpCompositeExtract %float %vec 2
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%20 = OpAccessChain %_ptr_Uniform_float %_ %int_0
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OpStore %20 %float_val
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OpReturn
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OpFunctionEnd
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