1; RUN: opt -indvars -loop-idiom -loop-deletion -S < %s | FileCheck %s
2
3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4target triple = "x86_64-unknown-linux-gnu"
5
6; Checking for a crash
7
8define void @f(i32* %a) {
9; CHECK-LABEL: @f(
10entry:
11  br label %for.cond
12
13for.cond:                                         ; preds = %for.inc, %for.cond, %entry
14  %iv = phi i32 [ 0, %entry ], [ %add, %for.inc ], [ %iv, %for.cond ]
15  %add = add nsw i32 %iv, 1
16  %idxprom = sext i32 %add to i64
17  %arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
18  br i1 undef, label %for.cond, label %for.inc
19
20for.inc:                                          ; preds = %for.cond
21  br i1 undef, label %for.cond, label %for.end
22
23for.end:                                          ; preds = %for.inc
24  ret void
25}
26