https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117438
Bug ID: 117438
Summary: pass_align_tight_loops may cause performance
regression in nested loops
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: Mayshao-oc at zhaoxin dot com
Target Milestone: ---
Created attachment 59530
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59530&action=edit
gcc -O1 loop.c
Pass_align_tight_loops align the inner loop aggressively, this may cause
significant performance regression of some nested loops.The attached loop.c
could be compiled by gcc -O1 to reproduce the scenario.
