diff options
Diffstat (limited to 'clang/test/CodeGenCXX/microsoft-abi-cdecl-method-sret.cpp')
| -rw-r--r-- | clang/test/CodeGenCXX/microsoft-abi-cdecl-method-sret.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/microsoft-abi-cdecl-method-sret.cpp b/clang/test/CodeGenCXX/microsoft-abi-cdecl-method-sret.cpp new file mode 100644 index 00000000000..fc3e2ca9bb4 --- /dev/null +++ b/clang/test/CodeGenCXX/microsoft-abi-cdecl-method-sret.cpp @@ -0,0 +1,35 @@ +// RUN: %clang_cc1 -triple i386-pc-win32 -emit-llvm %s -o - | FileCheck %s + +// PR15768 + +// A trivial 12 byte struct is returned indirectly. +struct S { + S(); + int a, b, c; +}; + +struct C { + S variadic_sret(const char *f, ...); + S __cdecl cdecl_sret(); + S __cdecl byval_and_sret(S a); + int c; +}; + +S C::variadic_sret(const char *f, ...) { return S(); } +S C::cdecl_sret() { return S(); } +S C::byval_and_sret(S a) { return S(); } + +// CHECK: define x86_cdeclmethodcc void @"\01?variadic_sret@C@@QAA?AUS@@PBDZZ"(%struct.S* noalias sret %agg.result, %struct.C* %this, i8* %f, ...) +// CHECK: define x86_cdeclmethodcc void @"\01?cdecl_sret@C@@QAA?AUS@@XZ"(%struct.S* noalias sret %agg.result, %struct.C* %this) +// CHECK: define x86_cdeclmethodcc void @"\01?byval_and_sret@C@@QAA?AUS@@U2@@Z"(%struct.S* noalias sret %agg.result, %struct.C* %this, %struct.S* byval align 4 %a) + +int main() { + C c; + c.variadic_sret("asdf"); + c.cdecl_sret(); + c.byval_and_sret(S()); +} +// CHECK-LABEL: define i32 @main() +// CHECK: call x86_cdeclmethodcc void {{.*}} @"\01?variadic_sret@C@@QAA?AUS@@PBDZZ" +// CHECK: call x86_cdeclmethodcc void @"\01?cdecl_sret@C@@QAA?AUS@@XZ" +// CHECK: call x86_cdeclmethodcc void @"\01?byval_and_sret@C@@QAA?AUS@@U2@@Z" |
