1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
; RUN: opt < %s -reassociate -disable-output
; PR13041
define void @foo() {
entry:
br label %while.cond
while.cond: ; preds = %while.body, %entry
%b.0 = phi i32 [ undef, %entry ], [ %sub2, %while.body ]
%c.0 = phi i32 [ undef, %entry ], [ %sub3, %while.body ]
br i1 undef, label %while.end, label %while.body
while.body: ; preds = %while.cond
%sub = sub nsw i32 0, %b.0
%sub2 = sub nsw i32 %sub, %c.0
%sub3 = sub nsw i32 0, %c.0
br label %while.cond
while.end: ; preds = %while.cond
ret void
}
|
