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| author | NAKAMURA Takumi <geek4civic@gmail.com> | 2011-03-24 07:07:00 +0000 |
|---|---|---|
| committer | NAKAMURA Takumi <geek4civic@gmail.com> | 2011-03-24 07:07:00 +0000 |
| commit | a2e0762fae050464494a50c8b5d53ac2f4ba738c (patch) | |
| tree | 64831b9b4df7f153028b5c258715f30613a86021 /test/CodeGen/X86/win64_alloca_dynalloca.ll | |
| parent | c37c539944874175c8f147fc7253506dfa8e6c3d (diff) | |
| download | llvm-a2e0762fae050464494a50c8b5d53ac2f4ba738c.tar.gz llvm-a2e0762fae050464494a50c8b5d53ac2f4ba738c.tar.bz2 llvm-a2e0762fae050464494a50c8b5d53ac2f4ba738c.tar.xz | |
Target/X86: [PR8777][PR8778] Tweak alloca/chkstk for Windows targets.
FIXME: Some cleanups would be needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128206 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/win64_alloca_dynalloca.ll')
| -rw-r--r-- | test/CodeGen/X86/win64_alloca_dynalloca.ll | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/test/CodeGen/X86/win64_alloca_dynalloca.ll b/test/CodeGen/X86/win64_alloca_dynalloca.ll new file mode 100644 index 0000000000..87d632afa6 --- /dev/null +++ b/test/CodeGen/X86/win64_alloca_dynalloca.ll @@ -0,0 +1,74 @@ +; RUN: llc < %s -mtriple=x86_64-mingw32 | FileCheck %s -check-prefix=M64 +; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=W64 +; RUN: llc < %s -mtriple=x86_64-win32-macho | FileCheck %s -check-prefix=EFI +; PR8777 +; PR8778 + +define i64 @foo(i64 %n, i64 %x) nounwind { +entry: + + %buf0 = alloca i8, i64 4096, align 1 + +; ___chkstk must adjust %rsp. +; M64: movq %rsp, %rbp +; M64: $4096, %rax +; M64: callq ___chkstk +; M64-NOT: %rsp + +; __chkstk does not adjust %rsp. +; W64: movq %rsp, %rbp +; W64: $4096, %rax +; W64: callq __chkstk +; W64: subq $4096, %rsp + +; Freestanding +; EFI: movq %rsp, %rbp +; EFI: $[[B0OFS:4096|4104]], %rsp +; EFI-NOT: call + + %buf1 = alloca i8, i64 %n, align 1 + +; M64: leaq 15(%rcx), %rax +; M64: andq $-16, %rax +; M64: callq ___chkstk +; M64-NOT: %rsp +; M64: movq %rsp, %rax + +; W64: leaq 15(%rcx), %rax +; W64: andq $-16, %rax +; W64: callq __chkstk +; W64: subq %rax, %rsp +; W64: movq %rsp, %rax + +; EFI: leaq 15(%rcx), %rax +; EFI: andq $-16, %rax +; EFI: movq %rsp, [[R64:%r..]] +; EFI: subq %rax, [[R64]] +; EFI: movq [[R64]], %rsp + + %r = call i64 @bar(i64 %n, i64 %x, i64 %n, i8* %buf0, i8* %buf1) nounwind + +; M64: subq $48, %rsp +; M64: leaq -4096(%rbp), %r9 +; M64: movq %rax, 32(%rsp) +; M64: callq bar + +; W64: subq $48, %rsp +; W64: leaq -4096(%rbp), %r9 +; W64: movq %rax, 32(%rsp) +; W64: callq bar + +; EFI: subq $48, %rsp +; EFI: leaq -[[B0OFS]](%rbp), %r9 +; EFI: movq [[R64]], 32(%rsp) +; EFI: callq _bar + + ret i64 %r + +; M64: movq %rbp, %rsp + +; W64: movq %rbp, %rsp + +} + +declare i64 @bar(i64, i64, i64, i8* nocapture, i8* nocapture) nounwind |