; This test shows SCCP "proving" that the loop (from bb6 to 14) loops infinitely ; this is in fact NOT the case, so the return should still be alive in the code ; after sccp and CFG simplification have been performed. ; ; RUN: opt < %s -sccp -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | \ ; RUN: grep ret define void @old_main() { bb3: br label %bb6 bb6: ; preds = %bb14, %bb3 %reg403 = phi i32 [ %reg155, %bb14 ], [ 0, %bb3 ] ; <i32> [#uses=1] %reg155 = add i32 %reg403, 1 ; <i32> [#uses=2] br label %bb11 bb11: ; preds = %bb11, %bb6 %reg407 = phi i32 [ %reg408, %bb11 ], [ 0, %bb6 ] ; <i32> [#uses=2] %reg408 = add i32 %reg407, 1 ; <i32> [#uses=1] %cond550 = icmp sle i32 %reg407, 1 ; <i1> [#uses=1] br i1 %cond550, label %bb11, label %bb12 bb12: ; preds = %bb11 br label %bb13 bb13: ; preds = %bb13, %bb12 %reg409 = phi i32 [ %reg410, %bb13 ], [ 0, %bb12 ] ; <i32> [#uses=1] %reg410 = add i32 %reg409, 1 ; <i32> [#uses=2] %cond552 = icmp sle i32 %reg410, 2 ; <i1> [#uses=1] br i1 %cond552, label %bb13, label %bb14 bb14: ; preds = %bb13 %cond553 = icmp sle i32 %reg155, 31 ; <i1> [#uses=1] br i1 %cond553, label %bb6, label %bb15 bb15: ; preds = %bb14 ret void }