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[Bug tree-optimization/88459] vectorization failure for a simple sum reduction loop
- From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 12 Dec 2018 09:18:36 +0000
- Subject: [Bug tree-optimization/88459] vectorization failure for a simple sum reduction loop
- Auto-submitted: auto-generated
- References: <bug-88459-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88459
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-12-12
CC| |ktkachov at gcc dot gnu.org
Blocks| |53947
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed on aarch64 and x86_64. Is it because GCC is afraid of signed overflow
or something?
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations