forked from OSchip/llvm-project
38 lines
870 B
LLVM
38 lines
870 B
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
|
|
|
|
; This test checks that the SimplifyCFG pass won't duplicate a call to a
|
|
; function marked noduplicate.
|
|
;
|
|
; CHECK-LABEL: @noduplicate
|
|
; CHECK: call void @barrier
|
|
; CHECK-NOT: call void @barrier
|
|
define void @noduplicate(i32 %cond, i32* %out) {
|
|
entry:
|
|
%out1 = getelementptr i32* %out, i32 1
|
|
%out2 = getelementptr i32* %out, i32 2
|
|
%cmp = icmp eq i32 %cond, 0
|
|
br i1 %cmp, label %if.then, label %if.end
|
|
|
|
if.then:
|
|
store i32 5, i32* %out
|
|
br label %if.end
|
|
|
|
if.end:
|
|
call void @barrier() #0
|
|
br i1 %cmp, label %cond.end, label %cond.false
|
|
|
|
cond.false:
|
|
store i32 5, i32* %out1
|
|
br label %cond.end
|
|
|
|
cond.end:
|
|
%value = phi i32 [ 1, %cond.false ], [ 0, %if.end ]
|
|
store i32 %value, i32* %out2
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: noduplicate nounwind
|
|
declare void @barrier() #0
|
|
|
|
attributes #0 = { noduplicate nounwind }
|