File: inline-asm-sp-clobber-memcpy.ll

package info (click to toggle)
llvm-toolchain-3.9 1%3A3.9.1-9
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 441,144 kB
  • ctags: 428,836
  • sloc: cpp: 2,546,577; ansic: 538,318; asm: 119,677; objc: 103,316; python: 102,148; sh: 27,847; pascal: 5,626; ml: 5,510; perl: 5,293; lisp: 4,801; makefile: 2,177; xml: 686; cs: 362; php: 212; csh: 117
file content (17 lines) | stat: -rw-r--r-- 596 bytes parent folder | download | duplicates (13)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
; RUN: llc < %s -stackrealign -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
}