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| author | Evgeny Stupachenko <evstupac@gmail.com> | 2016-04-27 03:04:54 +0000 |
|---|---|---|
| committer | Evgeny Stupachenko <evstupac@gmail.com> | 2016-04-27 03:04:54 +0000 |
| commit | a27504ef0698b7d495c7aab76f1d6ee1efb07411 (patch) | |
| tree | 6eff2728a985673aee6e137aa860721c3a155914 /test/LTO | |
| parent | ee1148650bd140f268e2be4faa68198fbd324964 (diff) | |
The patch fixes PR27392.
Summary:
It is incorrect to compare TripCount (which is BECount + 1)
with extraiters (or Count) to check if we should enter unrolled
loop or not, because TripCount can potentially overflow
(when BECount is max unsigned integer).
While comparing BECount with (Count - 1) is overflow safe and
therefore correct.
Reviewer: hfinkel
Differential Revision: http://reviews.llvm.org/D19256
From: Evgeny Stupachenko <evstupac@gmail.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267662 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/LTO')
0 files changed, 0 insertions, 0 deletions