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llvm-mirror/test/Transforms/SCCP/2002-05-21-InvalidSimplify.ll
Dan Gohman 205b641954 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00

34 lines
1.1 KiB
LLVM

; 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 -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
}