forked from OSchip/llvm-project
37 lines
1.2 KiB
LLVM
37 lines
1.2 KiB
LLVM
; RUN: opt -S -simplifycfg < %s | FileCheck %s
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
declare i32* @fn1(i32* returned)
|
|
|
|
define i32 @test1(i1 %B) {
|
|
entry:
|
|
br label %for.cond.us
|
|
|
|
for.cond.us: ; preds = %for.cond.us, %entry
|
|
br i1 %B, label %for.cond4.preheader, label %for.cond.us
|
|
|
|
for.cond4.preheader: ; preds = %for.cond.us
|
|
br i1 %B, label %for.cond4.preheader.split.us, label %for.cond4
|
|
|
|
for.cond4.preheader.split.us: ; preds = %for.cond4.preheader
|
|
unreachable
|
|
|
|
for.cond4: ; preds = %for.end, %for.cond4.preheader
|
|
%phi = phi i32* [ %call, %for.end ], [ undef, %for.cond4.preheader ]
|
|
%call = call i32* @fn1(i32* %phi)
|
|
br label %for.cond5
|
|
|
|
for.cond5: ; preds = %for.cond5, %for.cond4
|
|
br i1 %B, label %for.cond5, label %for.end
|
|
|
|
for.end: ; preds = %for.cond5
|
|
%load = load i32, i32* %call, align 4
|
|
br label %for.cond4
|
|
}
|
|
|
|
; CHECK-LABEL: define i32 @test1(
|
|
; CHECK: br label %[[LABEL:.*]]
|
|
; CHECK: [[LABEL]]:
|
|
; CHECK: br label %[[LABEL]]
|