| // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.6-compute -finclude-default-header \ | |
| // RUN: -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s | |
| // This test verifies handling of local arrays of resources when used as a function argument. | |
| // CHECK: @_ZL1A = internal global [3 x %"class.hlsl::RWBuffer"] poison, align 4 | |
| RWBuffer<float> A[3] : register(u0); | |
| RWStructuredBuffer<float> Out : register(u0); | |
| // NOTE: _ZN4hlsl8RWBufferIfEixEj is the subscript operator for RWBuffer<float> and | |
| // _ZN4hlsl18RWStructuredBufferIfEixEj is the subscript operator for RWStructuredBuffer<float> | |
| // CHECK: define {{.*}} float @_Z3fooA3_N4hlsl8RWBufferIfEE(ptr noundef byval([3 x %"class.hlsl::RWBuffer"]) align 4 %LocalA) | |
| // CHECK-NEXT: entry: | |
| float foo(RWBuffer<float> LocalA[3]) { | |
| // CHECK-NEXT: %[[LocalA_2_Ptr:.*]] = getelementptr inbounds [3 x %"class.hlsl::RWBuffer"], ptr %LocalA, i32 0, i32 2 | |
| // CHECK-NEXT: %[[BufPtr:.*]] = call {{.*}} ptr @_ZN4hlsl8RWBufferIfEixEj(ptr {{.*}} %[[LocalA_2_Ptr]], i32 noundef 0) | |
| // CHECK-NEXT: %[[Value:.*]] = load float, ptr %[[BufPtr]], align 4 | |
| // CHECK-NEXT: ret float %[[Value]] | |
| return LocalA[2][0]; | |
| } | |
| // CHECK: define internal void @_Z4mainv() | |
| // CHECK-NEXT: entry: | |
| [numthreads(4,1,1)] | |
| void main() { | |
| // Check that the `main` function calls `foo` with a local copy of the array | |
| // CHECK-NEXT: %[[Tmp:.*]] = alloca [3 x %"class.hlsl::RWBuffer"], align 4 | |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %[[Tmp]], ptr align 4 @_ZL1A, i32 12, i1 false) | |
| // CHECK-NEXT: %[[ReturnedValue:.*]] = call {{.*}} float @_Z3fooA3_N4hlsl8RWBufferIfEE(ptr noundef byval([3 x %"class.hlsl::RWBuffer"]) align 4 %[[Tmp]]) | |
| // CHECK-NEXT: %[[OutBufPtr:.*]] = call {{.*}} ptr @_ZN4hlsl18RWStructuredBufferIfEixEj(ptr {{.*}} @_ZL3Out, i32 noundef 0) | |
| // CHECK-NEXT: store float %[[ReturnedValue]], ptr %[[OutBufPtr]], align 4 | |
| // CHECK-NEXT: ret void | |
| Out[0] = foo(A); | |
| } |