2fc42c7163
This commits adds the first part of the output semantics. It only considers return values (and sret), but does not handle `inout` or `out` parameters yet. Those missing bits will reuse the same code, but will require additional testing & some fixups, so planning on adding them separately.
57 lines
2.7 KiB
HLSL
57 lines
2.7 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-vertex -x hlsl -emit-llvm -finclude-default-header -disable-llvm-passes -o - %s | FileCheck %s --check-prefixes=CHECK-DXIL,CHECK
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// RUN: %clang_cc1 -triple spirv-linux-vulkan-vertex -x hlsl -emit-llvm -finclude-default-header -disable-llvm-passes -o - %s | FileCheck %s --check-prefixes=CHECK-SPIRV,CHECK
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struct Input {
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// FIXME: change this once we have a valid system semantic as input for VS.
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float Idx : B2;
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};
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struct Output {
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float a : A4;
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float b : A2;
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};
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// CHECK-SPIRV-DAG: @B2 = external hidden thread_local addrspace(7) externally_initialized constant float, !spirv.Decorations ![[#METADATA_0:]]
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// CHECK-SPIRV-DAG: @A4 = external hidden thread_local addrspace(8) global float, !spirv.Decorations ![[#METADATA_0:]]
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// CHECK-SPIRV-DAG: @A2 = external hidden thread_local addrspace(8) global float, !spirv.Decorations ![[#METADATA_2:]]
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// CHECK: %Idx = getelementptr inbounds nuw %struct.Input, ptr %input, i32 0, i32 0
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// CHECK: %[[#tmp:]] = load float, ptr %Idx, align 1
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// CHECK: %a = getelementptr inbounds nuw %struct.Output, ptr %agg.result, i32 0, i32 0
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// CHECK: store float %[[#tmp]], ptr %a, align 1
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// CHECK: %Idx1 = getelementptr inbounds nuw %struct.Input, ptr %input, i32 0, i32 0
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// CHECK: %[[#tmp:]] = load float, ptr %Idx1, align 1
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// CHECK: %b = getelementptr inbounds nuw %struct.Output, ptr %agg.result, i32 0, i32 1
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// CHECK: store float %[[#tmp]], ptr %b, align 1
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Output main(Input input) {
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Output o;
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o.a = input.Idx;
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o.b = input.Idx;
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return o;
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}
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// Code generated in the entrypoint wrapper:
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// CHECK: %[[#OUTPUT:]] = alloca %struct.Output, align 8
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// CHECK-SPIRV: call spir_func void @_Z4main5Input(ptr %[[#OUTPUT]], ptr %[[#]])
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// CHECK-DXIL: call void @_Z4main5Input(ptr %[[#OUTPUT]], ptr %[[#]])
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// CHECK: %[[#TMP:]] = load %struct.Output, ptr %[[#OUTPUT]], align 4
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// CHECK: %[[#VAL:]] = extractvalue %struct.Output %[[#TMP]], 0
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// CHECK-SPIRV: store float %[[#VAL]], ptr addrspace(8) @A4, align 4
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// CHECK-DXIL: call void @llvm.dx.store.output.f32(i32 4, i32 0, i32 0, i8 0, i32 poison, float %[[#VAL]])
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// CHECK: %[[#VAL:]] = extractvalue %struct.Output %[[#TMP]], 1
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// CHECK-SPIRV: store float %[[#VAL]], ptr addrspace(8) @A2, align 4
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// CHECK-DXIL: call void @llvm.dx.store.output.f32(i32 4, i32 0, i32 0, i8 0, i32 poison, float %[[#VAL]])
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// CHECK-SPIRV-DAG: ![[#METADATA_0]] = !{![[#METADATA_1:]]}
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// CHECK-SPIRV-DAG: ![[#METADATA_2]] = !{![[#METADATA_3:]]}
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// CHECK-SPIRV-DAG: ![[#METADATA_1]] = !{i32 30, i32 0}
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// CHECK-SPIRV-DAG: ![[#METADATA_3]] = !{i32 30, i32 1}
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// | `- Location index
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// `-> Decoration "Location"
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