f193bcc701
This reverts the following commits: 37ca7a795b277c20c02a218bf44052278c03344b 9aa6c72b92b6c89cc6d23b693257df9af7de2d15 705387c5074bcca36d626882462ebbc2bcc3bed4 8ca4b3ef19fe82d7ad6a6e1515317dcc01b41515 80dba72a669b5416e97a42fd2c2a7bc5a6d3f44a
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
// RUN: %clang_cc1 -triple i386-pc-win32 -emit-llvm %s -o - | FileCheck %s
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// PR15768
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// A trivial 20 byte struct is returned indirectly and taken as byval.
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struct S {
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S();
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int a, b, c, d, e;
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};
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struct C {
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S variadic_sret(const char *f, ...);
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S __cdecl cdecl_sret();
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S __cdecl byval_and_sret(S a);
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int c;
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};
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S C::variadic_sret(const char *f, ...) { return S(); }
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S C::cdecl_sret() { return S(); }
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S C::byval_and_sret(S a) { return S(); }
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// CHECK: define dso_local void @"?variadic_sret@C@@QAA?AUS@@PBDZZ"(%struct.C* {{[^,]*}} %this, %struct.S* noalias sret(%struct.S) align 4 %agg.result, i8* %f, ...)
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// CHECK: define dso_local void @"?cdecl_sret@C@@QAA?AUS@@XZ"(%struct.C* {{[^,]*}} %this, %struct.S* noalias sret(%struct.S) align 4 %agg.result)
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// CHECK: define dso_local void @"?byval_and_sret@C@@QAA?AUS@@U2@@Z"(%struct.C* {{[^,]*}} %this, %struct.S* noalias sret(%struct.S) align 4 %agg.result, %struct.S* byval(%struct.S) align 4 %a)
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int main() {
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C c;
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c.variadic_sret("asdf");
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c.cdecl_sret();
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c.byval_and_sret(S());
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}
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// CHECK-LABEL: define dso_local i32 @main()
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// CHECK: call void {{.*}} @"?variadic_sret@C@@QAA?AUS@@PBDZZ"
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// CHECK: call void @"?cdecl_sret@C@@QAA?AUS@@XZ"
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// CHECK: call void @"?byval_and_sret@C@@QAA?AUS@@U2@@Z"
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// __fastcall has similar issues.
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struct A {
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S __fastcall f(int x);
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};
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S A::f(int x) {
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return S();
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}
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// CHECK-LABEL: define dso_local x86_fastcallcc void @"?f@A@@QAI?AUS@@H@Z"(%struct.A* inreg %this, %struct.S* inreg noalias sret(%struct.S) align 4 %agg.result, i32 %x)
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