4586a19da8
The CCCR_Ignore action is only used for Microsoft calling conventions, mainly because MSVC does not warn when a calling convention would be ignored by the current target. This behavior is actually somewhat important, since windows.h uses WINAPI (which expands to __stdcall) widely. This distinction didn't matter much before the introduction of __vectorcall to x64 and the ability to make that the default calling convention with /Gv. Now, we can't just ignore __stdcall for x64, we have to treat it as an explicit __cdecl annotation. Fixes PR42531 llvm-svn: 365579
46 lines
2.2 KiB
C
46 lines
2.2 KiB
C
// RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -o - %s | FileCheck %s --check-prefix=X86
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// RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -o - %s | FileCheck %s --check-prefix=X64
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// RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -o - %s -fdefault-calling-conv=vectorcall | FileCheck %s --check-prefix=X86-VEC
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// RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -o - %s -fdefault-calling-conv=vectorcall | FileCheck %s --check-prefix=X64-VEC
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void foo_default(const char *lpString1, const char *lpString2);
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void __stdcall foo_std(const char *lpString1, const char *lpString2);
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void __fastcall foo_fast(const char *lpString1, const char *lpString2);
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void __vectorcall foo_vector(const char *lpString1, const char *lpString2);
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void __cdecl bar() {
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foo_default(0, 0);
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foo_std(0, 0);
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foo_fast(0, 0);
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foo_vector(0, 0);
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}
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// X86-LABEL: define dso_local void @bar()
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// X86: call void @foo_default(i8* null, i8* null)
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// X86: call x86_stdcallcc void @"\01_foo_std@8"(i8* null, i8* null)
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// X86: call x86_fastcallcc void @"\01@foo_fast@8"(i8* inreg null, i8* inreg null)
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// X86: call x86_vectorcallcc void @"\01foo_vector@@8"(i8* inreg null, i8* inreg null)
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// X86: ret void
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// X64-LABEL: define dso_local void @bar()
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// X64: call void @foo_default(i8* null, i8* null)
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// X64: call void @foo_std(i8* null, i8* null)
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// X64: call void @foo_fast(i8* null, i8* null)
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// X64: call x86_vectorcallcc void @"\01foo_vector@@16"(i8* null, i8* null)
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// X64: ret void
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// X86-VEC-LABEL: define dso_local void @bar()
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// X86-VEC: call x86_vectorcallcc void @"\01foo_default@@8"(i8* inreg null, i8* inreg null)
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// X86-VEC: call x86_stdcallcc void @"\01_foo_std@8"(i8* null, i8* null)
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// X86-VEC: call x86_fastcallcc void @"\01@foo_fast@8"(i8* inreg null, i8* inreg null)
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// X86-VEC: call x86_vectorcallcc void @"\01foo_vector@@8"(i8* inreg null, i8* inreg null)
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// X86-VEC: ret void
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// X64-VEC-LABEL: define dso_local void @bar()
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// X64-VEC: call x86_vectorcallcc void @"\01foo_default@@16"(i8* null, i8* null)
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// X64-VEC: call void @foo_std(i8* null, i8* null)
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// X64-VEC: call void @foo_fast(i8* null, i8* null)
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// X64-VEC: call x86_vectorcallcc void @"\01foo_vector@@16"(i8* null, i8* null)
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// X64-VEC: ret void
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