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llvm-mirror/test/CodeGen/X86/leaf-fp-elim.ll
Bill Wendling 8f0fcd1623 Extension of r107506. Make sure that we don't mark a function as having a call
if the inline ASM doesn't need a stack frame.

llvm-svn: 107922
2010-07-08 22:38:02 +00:00

31 lines
1.1 KiB
LLVM

; RUN: llc < %s -disable-non-leaf-fp-elim -relocation-model=pic -mtriple=x86_64-apple-darwin | FileCheck %s
; <rdar://problem/8170192>
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin11.0"
@msg = internal global i8* null ; <i8**> [#uses=1]
@.str = private constant [2 x i8] c"x\00", align 1 ; <[2 x i8]*> [#uses=1]
define void @test(i8* %p) nounwind optsize ssp {
; No stack frame, please.
; CHECK: _test
; CHECK-NOT: pushq %rbp
; CHECK-NOT: movq %rsp, %rbp
; CHECK: InlineAsm Start
entry:
%0 = icmp eq i8* %p, null ; <i1> [#uses=1]
br i1 %0, label %return, label %bb
bb: ; preds = %entry
tail call void asm "mov $1, $0", "=*m,{cx},~{dirflag},~{fpsr},~{flags}"(i8** @msg, i8* getelementptr inbounds ([2 x i8]* @.str, i64 0, i64 0)) nounwind
tail call void @llvm.trap()
unreachable
return: ; preds = %entry
ret void
}
declare void @llvm.trap() nounwind