[Bug rtl-optimization/46257] [Meta] [4.6 Regression] ifcvt/crossjump failure

2010-11-07 Thread steven at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46257 Steven Bosscher changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC|

[Bug tree-optimization/46316] [4.6 regression] incorrect loop optimization

2010-11-07 Thread jakub at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46316 --- Comment #14 from Jakub Jelinek 2010-11-08 07:34:48 UTC --- Instead of multiplication followed by division, it would be faster to just use mul_double_with_sign which returns whether there was an overflow or not.

[Bug tree-optimization/46316] [4.6 regression] incorrect loop optimization

2010-11-07 Thread xinliangli at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46316 --- Comment #15 from davidxl 2010-11-08 07:38:17 UTC --- (In reply to comment #14) > Instead of multiplication followed by division, it would be faster to just use > mul_double_with_sign which returns whether there was an overflow or not. Good i

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