File: 2012-01-16-mfence-nosse-flags.ll

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llvm-toolchain-11 1%3A11.0.1-2
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; RUN: llc < %s -verify-machineinstrs -mtriple=i686-linux -mattr=-sse | FileCheck %s
; PR11768

@ptr = external global i8*

define void @baz() nounwind ssp {
entry:
  %0 = load i8*, i8** @ptr, align 4
  %cmp = icmp eq i8* %0, null
  fence seq_cst
  br i1 %cmp, label %if.then, label %if.else

; Make sure the fence comes before the comparison, since it
; clobbers EFLAGS.

; CHECK: lock orl {{.*}}, (%esp)
; CHECK-NEXT: testl [[REG:%e[a-z]+]], [[REG]]

if.then:                                          ; preds = %entry
  tail call void bitcast (void (...)* @foo to void ()*)() nounwind
  br label %if.end

if.else:                                          ; preds = %entry
  tail call void bitcast (void (...)* @bar to void ()*)() nounwind
  br label %if.end

if.end:                                           ; preds = %if.else, %if.then
  ret void
}

declare void @foo(...)

declare void @bar(...)