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// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -x hlsl -emit-llvm -disable-llvm-passes -o - -hlsl-entry main %s | FileCheck %s --check-prefixes=CHECK,CHECK-DXIL -DTARGET=dx
// RUN: %clang_cc1 -triple spirv-unknown-vulkan-compute -x hlsl -emit-llvm -disable-llvm-passes -o - -hlsl-entry main %s | FileCheck %s --check-prefixes=CHECK,CHECK-SPIRV -DTARGET=spv
[numthreads(1,1,1)]
void main(unsigned GI : SV_GroupIndex) {
main(GI - 1);
}
// For HLSL entry functions, we are generating a C-export function that wraps
// the C++-mangled entry function. The wrapper function can be used to populate
// semantic parameters and provides the expected void(void) signature that
// drivers expect for entry points.
// CHECK: define void @main() #[[#ENTRY_ATTR:]] {
// CHECK: entry:
// CHECK: %[[#ID_X:]] = call i32 @llvm.[[TARGET]].flattened.thread.id.in.group()
// CHECK-DXIL: call void @_Z4mainj(i32 %[[#ID_X]])
// CHECK-SPIRV: call spir_func void @_Z4mainj(i32 %[[#ID_X]])
// CHECK: ret void
// CHECK: }
// Verify that the entry had the expected dx.shader attribute
// CHECK: attributes #[[#ENTRY_ATTR]] = { {{.*}}"hlsl.shader"="compute"{{.*}} }
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