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| author | Andrew Trick <atrick@apple.com> | 2012-03-20 21:24:40 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2012-03-20 21:24:40 +0000 |
| commit | f9492288bbc51e5d34f19ba53dc778bc83be807c (patch) | |
| tree | bdcdde448de01e7c5fc1e53ea7911b0dc549c536 /test | |
| parent | aa7b3df1788e6ffdaa9b661cfdccdc41ad181567 (diff) | |
| download | llvm-f9492288bbc51e5d34f19ba53dc778bc83be807c.tar.gz llvm-f9492288bbc51e5d34f19ba53dc778bc83be807c.tar.bz2 llvm-f9492288bbc51e5d34f19ba53dc778bc83be807c.tar.xz | |
LSR: fix IVUsers isSimplifiedLoopNest to perform a full domtree walk
instead of skipping the current loop.
My prior fix was incomplete because of an overzealous compile-time optimization:
Better fix for: <rdar://problem/11049788> Segmentation fault: 11 in LoopStrengthReduce
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153131 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll b/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll index 207e9d74f5..01f9276dc2 100644 --- a/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll +++ b/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll @@ -48,3 +48,76 @@ for.inc: ; preds = %lor.rhs234, %land.l return: ; preds = %if.end677, %doshell, %if.then96 ret void } + +define void @nopreheader2() nounwind ssp { +entry: + indirectbr i8* undef, [label %while.cond, label %return] + +while.cond: ; preds = %while.cond.backedge, %entry + indirectbr i8* undef, [label %while.cond.backedge, label %lor.rhs] + +lor.rhs: ; preds = %while.cond + indirectbr i8* undef, [label %while.cond.backedge, label %while.end] + +while.cond.backedge: ; preds = %lor.rhs, %while.cond + indirectbr i8* undef, [label %while.cond] + +while.end: ; preds = %lor.rhs + indirectbr i8* undef, [label %if.then18, label %return] + +if.then18: ; preds = %while.end + indirectbr i8* undef, [label %if.end35, label %lor.lhs.false] + +lor.lhs.false: ; preds = %if.then18 + indirectbr i8* undef, [label %if.end35, label %return] + +if.end35: ; preds = %lor.lhs.false, %if.then18 + indirectbr i8* undef, [label %while.cond36] + +while.cond36: ; preds = %while.body49, %if.end35 + %0 = phi i64 [ %indvar.next13, %while.body49 ], [ 0, %if.end35 ] + indirectbr i8* undef, [label %while.body49, label %lor.rhs42] + +lor.rhs42: ; preds = %while.cond36 + indirectbr i8* undef, [label %while.body49, label %while.end52] + +while.body49: ; preds = %lor.rhs42, %while.cond36 + %indvar.next13 = add i64 %0, 1 + indirectbr i8* undef, [label %while.cond36] + +while.end52: ; preds = %lor.rhs42 + indirectbr i8* undef, [label %land.lhs.true, label %return] + +land.lhs.true: ; preds = %while.end52 + indirectbr i8* undef, [label %while.cond66.preheader, label %return] + +while.cond66.preheader: ; preds = %land.lhs.true + indirectbr i8* undef, [label %while.cond66] + +while.cond66: ; preds = %while.body77, %while.cond66.preheader + indirectbr i8* undef, [label %land.rhs, label %while.cond81.preheader] + +land.rhs: ; preds = %while.cond66 + indirectbr i8* undef, [label %while.body77, label %while.cond81.preheader] + +while.cond81.preheader: ; preds = %land.rhs, %while.cond66 + %tmp45 = add i64 undef, %0 + %tmp46 = add i64 %tmp45, undef + indirectbr i8* undef, [label %while.cond81] + +while.body77: ; preds = %land.rhs + indirectbr i8* undef, [label %while.cond66] + +while.cond81: ; preds = %while.body94, %while.cond81.preheader + %tmp25 = add i64 %tmp46, undef + indirectbr i8* undef, [label %while.body94, label %lor.rhs87] + +lor.rhs87: ; preds = %while.cond81 + indirectbr i8* undef, [label %while.body94, label %return] + +while.body94: ; preds = %lor.rhs87, %while.cond81 + indirectbr i8* undef, [label %while.cond81] + +return: ; preds = %if.end216, %land.lhs.true183, %land.lhs.true, %while.end52, %lor.lhs.false, %while.end, %entry + ret void +} |