| ; RUN: opt -S -indvars -loop-idiom -verify -loop-simplifycfg -simplifycfg-require-and-preserve-domtree=1 -loop-idiom < %s | FileCheck %s |
| |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; CHECK-LABEL: @f1() |
| ; CHECK-NEXT: entry: |
| define void @f1() { |
| entry: |
| br label %lbl1 |
| |
| lbl1: ; preds = %if.end, %entry |
| br label %for |
| |
| for: ; preds = %if.end, %lbl1 |
| br label %lor.end |
| |
| lor.end: ; preds = %for |
| br i1 undef, label %for.end, label %if.end |
| |
| if.end: ; preds = %lor.end |
| br i1 undef, label %lbl1, label %for |
| |
| for.end: ; preds = %lor.end |
| ret void |
| } |
