1; RUN: opt < %s -reassociate -S
2
3; PR28367
4
5; Check to make sure this test does not assert or segfault.  If we get too
6; aggressive with retrying instructions it's possible to invalidate our
7; iterator.  See PR28367 for complete details.
8
9define void @fn1(i32 %a, i1 %c, i32* %ptr)  {
10entry:
11  br label %for.cond
12
13for.cond:
14  %d.0 = phi i32 [ 1, %entry ], [ 2, %for.body ]
15  br i1 %c, label %for.end, label %for.body
16
17for.body:
18  %sub1 = sub i32 %a, %d.0
19  %dead1 = add i32 %sub1, 1
20  %dead2 = mul i32 %dead1, 3
21  %dead3 = mul i32 %dead2, %sub1
22  %sub2 = sub nsw i32 0, %d.0
23  store i32 %sub2, i32* %ptr, align 4
24  br label %for.cond
25
26for.end:
27  ret void
28}
29