| // 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 that is modified inside the function. | |
| // CHECK: @_ZL1X = internal global %"class.hlsl::RWBuffer" poison, align 4 | |
| // CHECK: @_ZL1Y = internal global %"class.hlsl::RWBuffer" poison, align 4 | |
| RWBuffer<int> X : register(u0); | |
| RWBuffer<int> Y : register(u1); | |
| // CHECK: define {{.*}} @_Z6SomeFnA2_N4hlsl8RWBufferIiEEji( | |
| // CHECK-SAME: ptr noundef byval([2 x %"class.hlsl::RWBuffer"]) align 4 %B, i32 noundef %Idx, i32 noundef %Val0) | |
| // CHECK-NEXT: entry: | |
| // CHECK-NEXT: %[[Idx_addr:.*]] = alloca i32, align 4 | |
| // CHECK-NEXT: %[[Val0_addr:.*]] = alloca i32, align 4 | |
| // CHECK-NEXT: store i32 %Idx, ptr %[[Idx_addr]], align 4 | |
| // CHECK-NEXT: store i32 %Val0, ptr %[[Val0_addr]], align 4 | |
| void SomeFn(RWBuffer<int> B[2], uint Idx, int Val0) { | |
| // CHECK-NEXT: %[[B_0_Ptr:.*]] = getelementptr inbounds [2 x %"class.hlsl::RWBuffer"], ptr %B, i32 0, i32 0 | |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %[[B_0_Ptr]], ptr align 4 @_ZL1Y, i32 4, i1 false) | |
| B[0] = Y; | |
| // NOTE: _ZN4hlsl8RWBufferIiEixEj is the subscript operator for RWBuffer<int> | |
| // CHECK-NEXT: %[[Val0:.*]] = load i32, ptr %[[Val0_addr]], align 4 | |
| // CHECK-NEXT: %[[B_0_Ptr:.*]] = getelementptr inbounds [2 x %"class.hlsl::RWBuffer"], ptr %B, i32 0, i32 0 | |
| // CHECK-NEXT: %[[Idx:.*]] = load i32, ptr %[[Idx_addr]], align 4 | |
| // CHECK-NEXT: %[[BufPtr:.*]] = call {{.*}} ptr @_ZN4hlsl8RWBufferIiEixEj(ptr {{.*}} %[[B_0_Ptr]], i32 noundef %[[Idx]]) | |
| // CHECK-NEXT: store i32 %[[Val0]], ptr %[[BufPtr]], align 4 | |
| B[0][Idx] = Val0; | |
| } | |
| // CHECK: define {{.*}} void @_Z4mainj(i32 noundef %GI) | |
| // CHECK-NEXT: entry: | |
| // CHECK-NEXT: %[[GI_addr:.*]] = alloca i32, align 4 | |
| [numthreads(4,1,1)] | |
| void main(uint GI : SV_GroupIndex) { | |
| // CHECK-NEXT: %A = alloca [2 x %"class.hlsl::RWBuffer"], align 4 | |
| // CHECK-NEXT: %[[Tmp:.*]] = alloca [2 x %"class.hlsl::RWBuffer"], align 4 | |
| // CHECK-NEXT: store i32 %GI, ptr %GI.addr, align 4 | |
| // Initialization of array A with resources X and Y | |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %A, ptr align 4 @_ZL1X, i32 4, i1 false) | |
| // CHECK-NEXT: %[[A_1_Ptr:.*]] = getelementptr inbounds %"class.hlsl::RWBuffer", ptr %A, i32 1 | |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %[[A_1_Ptr]], ptr align 4 @_ZL1Y, i32 4, i1 false) | |
| RWBuffer<int> A[2] = {X, Y}; | |
| // Verify that SomeFn is called with a local copy of the array A | |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %[[Tmp]], ptr align 4 %A, i32 8, i1 false) | |
| // CHECK-NEXT: %[[GI:.*]] = load i32, ptr %[[GI_addr]], align 4 | |
| // CHECK-NEXT: call void @_Z6SomeFnA2_N4hlsl8RWBufferIiEEji(ptr noundef byval([2 x %"class.hlsl::RWBuffer"]) align 4 %[[Tmp]], i32 noundef %[[GI]], i32 noundef 1) | |
| SomeFn(A, GI, 1); | |
| // CHECK-NEXT: %[[A_0_Ptr:.*]] = getelementptr inbounds [2 x %"class.hlsl::RWBuffer"], ptr %A, i32 0, i32 0 | |
| // CHECK-NEXT: %[[GI:.*]] = load i32, ptr %[[GI_addr]], align 4 | |
| // CHECK-NEXT: %[[BufPtr:.*]] = call {{.*}} ptr @_ZN4hlsl8RWBufferIiEixEj(ptr {{.*}} %[[A_0_Ptr]], i32 noundef %[[GI]]) | |
| // CHECK-NEXT: store i32 2, ptr %[[BufPtr]], align 4 | |
| A[0][GI] = 2; | |
| } |