https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79964
Bug ID: 79964
Summary: Cortex A53 codegen still not optimal
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: tulipawn at gmail dot com
Target Milestone: ---
Two data points:
- the integer benchmark from PR79665 runs about 7% slower with -mcpu=cortex-a53
vs other targets, equalling generic codegen. It was still indistinguishable on
20170220, so the regression must have happened shortly after as per PR79665#c13
- c-ray again, wherein dispensing with -mfix-cortex-a53-843419 removes the
handicap, but e.g. A57 codegen produces the best result ever on this machine:
http://openbenchmarking.org/result/1703089-RI-1703040RI07
Coming from a Cortex A53 with 32kB of L1 cache.
