diff options
Diffstat (limited to 'test/CodeGen/X86/inline-asm-sp-clobber-memcpy.ll')
| -rw-r--r-- | test/CodeGen/X86/inline-asm-sp-clobber-memcpy.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/X86/inline-asm-sp-clobber-memcpy.ll b/test/CodeGen/X86/inline-asm-sp-clobber-memcpy.ll new file mode 100644 index 0000000000..b55571bcba --- /dev/null +++ b/test/CodeGen/X86/inline-asm-sp-clobber-memcpy.ll @@ -0,0 +1,17 @@ +; RUN: llc < %s -force-align-stack -mtriple i386-apple-darwin -mcpu=i486 | FileCheck %s + +%struct.foo = type { [88 x i8] } + +declare void @bar(i8* nocapture, %struct.foo* align 4 byval) nounwind + +; PR19012 +; Don't clobber %esi if we have inline asm that clobbers %esp. +define void @test1(%struct.foo* nocapture %x, i32 %y, i8* %z) nounwind { + call void @bar(i8* %z, %struct.foo* align 4 byval %x) + call void asm sideeffect inteldialect "xor esp, esp", "=*m,~{flags},~{esp},~{esp},~{dirflag},~{fpsr},~{flags}"(i8* %z) + ret void + +; CHECK-LABEL: test1: +; CHECK: movl %esp, %esi +; CHECK-NOT: rep;movsl +} |