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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
struct Pair {
int First;
int Second;
int getFirst() {
Pair Another = {5, 10};
this = Another;
return this.First;
}
int getSecond() {
this = Pair();
return Second;
}
};
[numthreads(1, 1, 1)]
void main() {
Pair Vals = {1, 2.0};
Vals.First = Vals.getFirst();
Vals.Second = Vals.getSecond();
}
// This tests reference like implicit this in HLSL
// CHECK: define linkonce_odr noundef i32 @"?getFirst@Pair@@QAAHXZ"(ptr noundef nonnull align 4 dereferenceable(8) %this) #3 align 2 {
// CHECK-NEXT:entry:
// CHECK-NEXT:%this.addr = alloca ptr, align 4
// CHECK-NEXT:%Another = alloca %struct.Pair, align 4
// CHECK-NEXT:store ptr %this, ptr %this.addr, align 4
// CHECK-NEXT:%this1 = load ptr, ptr %this.addr, align 4
// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 4 %Another, ptr align 4 @"__const.?getFirst@Pair@@QAAHXZ.Another", i32 8, i1 false)
// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 4 %this1, ptr align 4 %Another, i32 8, i1 false)
// CHECK-NEXT:%First = getelementptr inbounds %struct.Pair, ptr %this1, i32 0, i32 0
// CHECK: define linkonce_odr noundef i32 @"?getSecond@Pair@@QAAHXZ"(ptr noundef nonnull align 4 dereferenceable(8) %this) #3 align 2 {
// CHECK-NEXT:entry:
// CHECK-NEXT:%this.addr = alloca ptr, align 4
// CHECK-NEXT:%ref.tmp = alloca %struct.Pair, align 4
// CHECK-NEXT:store ptr %this, ptr %this.addr, align 4
// CHECK-NEXT:%this1 = load ptr, ptr %this.addr, align 4
// CHECK-NEXT:call void @llvm.memset.p0.i32(ptr align 4 %ref.tmp, i8 0, i32 8, i1 false)
// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 4 %this1, ptr align 4 %ref.tmp, i32 8, i1 false)
// CHECK-NEXT:%Second = getelementptr inbounds %struct.Pair, ptr %this1, i32 0, i32 1
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