1// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -x hlsl -emit-llvm -disable-llvm-passes -o - -hlsl-entry main %s | FileCheck %s 2 3[numthreads(1,1,1)] 4void main(unsigned GI : SV_GroupIndex) { 5 main(GI - 1); 6} 7 8// For HLSL entry functions, we are generating a C-export function that wraps 9// the C++-mangled entry function. The wrapper function can be used to populate 10// semantic parameters and provides the expected void(void) signature that 11// drivers expect for entry points. 12 13//CHECK: define void @main() #[[#ENTRY_ATTR:]] { 14//CHECK-NEXT: entry: 15//CHECK-NEXT: %0 = call i32 @llvm.dx.flattened.thread.id.in.group() 16//CHECK-NEXT: call void @_Z4mainj(i32 %0) 17//CHECK-NEXT: ret void 18//CHECK-NEXT: } 19 20// Verify that the entry had the expected dx.shader attribute 21 22//CHECK: attributes #[[#ENTRY_ATTR]] = { {{.*}}"hlsl.shader"="compute"{{.*}} } 23