[Bug rtl-optimization/59511] [4.9 Regression] FAIL: gcc.target/i386/pr36222-1.c scan-assembler-not movdqa with -mtune=corei7

vmakarov at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Dec 17 16:37:00 GMT 2013


--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> One movdqa started appearing with r204212, the second movdqa started
> appearing with r204752.  Vlad, can you please have a look?

It seems the changes triggered a bug in register move cost calculations.  I
have a patch to fix it but I need more time to check affect of it on the
performance.  So the fix will be ready at the end of week if everything is ok.

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