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| author | Eli Friedman <eli.friedman@gmail.com> | 2012-01-20 00:05:46 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2012-01-20 00:05:46 +0000 |
| commit | 9a2478ac1a9aafcd5e89808868e170cfdfefcdc1 (patch) | |
| tree | bf270b5ef6468e9762a579d323642ede2f190f1b /test/CodeGen/X86/win32_sret.ll | |
| parent | f46fbade8ac5fac32671b0d55d9a8e67556cecb3 (diff) | |
Support MSVC x86-32 sret convention. PR11688. Patch by Joe Groff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148513 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/win32_sret.ll')
| -rw-r--r-- | test/CodeGen/X86/win32_sret.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/X86/win32_sret.ll b/test/CodeGen/X86/win32_sret.ll new file mode 100644 index 0000000000..878c6db992 --- /dev/null +++ b/test/CodeGen/X86/win32_sret.ll @@ -0,0 +1,28 @@ +; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN_X32 +; RUN: llc < %s -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X32 +; RUN: llc < %s -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX +; RUN: llc < %s -O0 -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN_X32 +; RUN: llc < %s -O0 -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X32 +; RUN: llc < %s -O0 -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX + +; The SysV ABI used by most Unixes and Mingw on x86 specifies that an sret pointer +; is callee-cleanup. However, in MSVC's cdecl calling convention, sret pointer +; arguments are caller-cleanup like normal arguments. + +define void @sret1(i8* sret) nounwind { +entry: +; WIN_X32: {{ret$}} +; MINGW_X32: ret $4 +; LINUX: ret $4 + ret void +} + +define void @sret2(i32* sret %x, i32 %y) nounwind { +entry: +; WIN_X32: {{ret$}} +; MINGW_X32: ret $4 +; LINUX: ret $4 + store i32 %y, i32* %x + ret void +} + |