; 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 }