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TheRock/compiler/amd-llvm/clang/test/CodeGenCXX/microsoft-abi-byval-sret.cpp
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

71 lines
2.1 KiB
C++

// RUN: %clang_cc1 -emit-llvm %s -o - -triple=i686-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck %s
struct A {
A() : a(42) {}
A(const A &o) : a(o.a) {}
~A() {}
int a;
};
struct B {
A foo(A o);
A __cdecl bar(A o);
A __stdcall baz(A o);
A __fastcall qux(A o);
};
A B::foo(A x) {
return x;
}
// CHECK-LABEL: define dso_local x86_thiscallcc ptr @"?foo@B@@QAE?AUA@@U2@@Z"
// CHECK: (ptr noundef %this, ptr inalloca(<{ ptr, %struct.A }>) %0)
// CHECK: getelementptr inbounds nuw <{ ptr, %struct.A }>, ptr %{{.*}}, i32 0, i32 0
// CHECK: load ptr, ptr
// CHECK: ret ptr
A B::bar(A x) {
return x;
}
// CHECK-LABEL: define dso_local ptr @"?bar@B@@QAA?AUA@@U2@@Z"
// CHECK: (ptr inalloca(<{ ptr, ptr, %struct.A }>) %0)
// CHECK: getelementptr inbounds nuw <{ ptr, ptr, %struct.A }>, ptr %{{.*}}, i32 0, i32 1
// CHECK: load ptr, ptr
// CHECK: ret ptr
A B::baz(A x) {
return x;
}
// CHECK-LABEL: define dso_local x86_stdcallcc ptr @"?baz@B@@QAG?AUA@@U2@@Z"
// CHECK: (ptr inalloca(<{ ptr, ptr, %struct.A }>) %0)
// CHECK: getelementptr inbounds nuw <{ ptr, ptr, %struct.A }>, ptr %{{.*}}, i32 0, i32 1
// CHECK: load ptr, ptr
// CHECK: ret ptr
A B::qux(A x) {
return x;
}
// CHECK-LABEL: define dso_local x86_fastcallcc void @"?qux@B@@QAI?AUA@@U2@@Z"
// CHECK: (ptr inreg noundef %this, ptr dead_on_unwind inreg noalias writable sret(%struct.A) align 4 %agg.result, ptr inalloca(<{ %struct.A }>) %0)
// CHECK: ret void
int main() {
B b;
A a = b.foo(A());
a = b.bar(a);
a = b.baz(a);
a = b.qux(a);
}
// CHECK: call x86_thiscallcc ptr @"?foo@B@@QAE?AUA@@U2@@Z"
// CHECK: (ptr noundef %{{[^,]*}}, ptr inalloca(<{ ptr, %struct.A }>) %{{[^,]*}})
// CHECK: call ptr @"?bar@B@@QAA?AUA@@U2@@Z"
// CHECK: (ptr inalloca(<{ ptr, ptr, %struct.A }>) %{{[^,]*}})
// CHECK: call x86_stdcallcc ptr @"?baz@B@@QAG?AUA@@U2@@Z"
// CHECK: (ptr inalloca(<{ ptr, ptr, %struct.A }>) %{{[^,]*}})
// CHECK: call x86_fastcallcc void @"?qux@B@@QAI?AUA@@U2@@Z"
// CHECK: (ptr inreg noundef %{{[^,]*}}, ptr dead_on_unwind inreg writable sret(%struct.A) align 4 %{{.*}}, ptr inalloca(<{ %struct.A }>) %{{[^,]*}})