1; LoopSimplify is breaking LICM on this testcase because the exit blocks from
2; the loop are reachable from more than just the exit nodes: the exit blocks
3; have predecessors from outside of the loop!
4;
5; This is distilled from a monsterous crafty example.
6
7; RUN: opt < %s -licm -disable-output
8
9
10@G = weak global i32 0		; <i32*> [#uses=7]
11
12define i32 @main() {
13entry:
14	store i32 123, i32* @G
15	br label %loopentry.i
16loopentry.i:		; preds = %endif.1.i, %entry
17	%tmp.0.i = load i32, i32* @G		; <i32> [#uses=1]
18	%tmp.1.i = icmp eq i32 %tmp.0.i, 123		; <i1> [#uses=1]
19	br i1 %tmp.1.i, label %Out.i, label %endif.0.i
20endif.0.i:		; preds = %loopentry.i
21	%tmp.3.i = load i32, i32* @G		; <i32> [#uses=1]
22	%tmp.4.i = icmp eq i32 %tmp.3.i, 126		; <i1> [#uses=1]
23	br i1 %tmp.4.i, label %ExitBlock.i, label %endif.1.i
24endif.1.i:		; preds = %endif.0.i
25	%tmp.6.i = load i32, i32* @G		; <i32> [#uses=1]
26	%inc.i = add i32 %tmp.6.i, 1		; <i32> [#uses=1]
27	store i32 %inc.i, i32* @G
28	br label %loopentry.i
29Out.i:		; preds = %loopentry.i
30	store i32 0, i32* @G
31	br label %ExitBlock.i
32ExitBlock.i:		; preds = %Out.i, %endif.0.i
33	%tmp.7.i = load i32, i32* @G		; <i32> [#uses=1]
34	ret i32 %tmp.7.i
35}
36
37