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| ; RUN: opt < %s -simplifycfg -S | FileCheck %s
; Test that a lifetime intrinsic isn't removed because that would change semantics
; CHECK: foo
; CHECK: entry:
; CHECK: bb0:
; CHECK: bb1:
; CHECK: ret
define void @foo(i1 %x) {
entry:
%a = alloca i8
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %a) nounwind
br i1 %x, label %bb0, label %bb1
bb0:
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %a) nounwind
br label %bb1
bb1:
call void @f()
ret void
}
declare void @f()
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind
|