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[Bug target/79964] Cortex A53 codegen still not optimal
- From: "tulipawn at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 29 Apr 2017 21:13:22 +0000
- Subject: [Bug target/79964] Cortex A53 codegen still not optimal
- Auto-submitted: auto-generated
- References: <bug-79964-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79964
--- Comment #2 from PeteVine <tulipawn at gmail dot com> ---
I can confirm the first part of the issue gets fixed with this patch:
https://gcc.gnu.org/ml/gcc-patches/2017-04/msg01415.html
but there's a regression in gcc8 concerning the second part. (or rather the
workarounds don't work any more)
http://openbenchmarking.org/result/1704298-RI-CRAYREGRE13
("basic flags" didn't deactivate -mfix-cortex-a53-843419, hence the difference)