| ; 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]] |
