+++ This bug was initially created as a clone of Bug #37364 +++ Testcase in PR 37364:
http://gcc.gnu.org/bugzilla/attachment.cgi?id=16536 shows IRA generates slower code for -mtune=core2. $ gcc -m32 -O2 -mssse3 -mfpmath=sse 36.c $ time -p ./a.out real 7.97 $ gcc -m32 -O2 -mssse3 -mfpmath=sse -mtune=core2 -o core2.exe 36.c $ time -p ./core2.exe real 12.27 -- Summary: [4.4 Regression] IRA generates slower code for - mtune=core2 Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: missed-optimization, ra Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl dot tools at gmail dot com GCC target triplet: i686-pc-linux-gnu BugsThisDependsOn: 37364 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948
