1 ; This test shows SCCP "proving" that the loop (from bb6 to 14) loops infinitely
2 ; this is in fact NOT the case, so the return should still be alive in the code
3 ; after sccp and CFG simplification have been performed.
5 ; RUN: opt < %s -sccp -simplifycfg -S | \
8 define void @old_main() {
11 bb6: ; preds = %bb14, %bb3
12 %reg403 = phi i32 [ %reg155, %bb14 ], [ 0, %bb3 ] ; <i32> [#uses=1]
13 %reg155 = add i32 %reg403, 1 ; <i32> [#uses=2]
15 bb11: ; preds = %bb11, %bb6
16 %reg407 = phi i32 [ %reg408, %bb11 ], [ 0, %bb6 ] ; <i32> [#uses=2]
17 %reg408 = add i32 %reg407, 1 ; <i32> [#uses=1]
18 %cond550 = icmp sle i32 %reg407, 1 ; <i1> [#uses=1]
19 br i1 %cond550, label %bb11, label %bb12
22 bb13: ; preds = %bb13, %bb12
23 %reg409 = phi i32 [ %reg410, %bb13 ], [ 0, %bb12 ] ; <i32> [#uses=1]
24 %reg410 = add i32 %reg409, 1 ; <i32> [#uses=2]
25 %cond552 = icmp sle i32 %reg410, 2 ; <i1> [#uses=1]
26 br i1 %cond552, label %bb13, label %bb14
28 %cond553 = icmp sle i32 %reg155, 31 ; <i1> [#uses=1]
29 br i1 %cond553, label %bb6, label %bb15