https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90255
Bug ID: 90255
Summary: [9 regression] r266385 caused code size regressions on
Arm, thumb and thumb2
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
Target Milestone: ---
Created attachment 46247
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46247&action=edit
testcase
Overall r266385 caused
0.16% regression on Arm and thumb1 -Os
0.08% regression on thumb2 -Os.
when building CSiBE
Some non-trivial files, however, regressed significantly, some by over 3%.
For example, teem-1.6.0-src src/dye/test/bow regresses by 3.36% on Arm due to
additional spills and the need for another register to be allocated.
