------- Comment #1 from amylaar at gcc dot gnu dot org 2006-07-06 19:08 -------
This patch has added code that is nonsentical when the operation can be
synthesized cheaply in a narrower mode:
r83956 | sayle | 2004-07-01 05:27:09 +0100 (Thu, 01 Jul 2004) | 6 lines
* expmed.c (expand_shift): Consider expanding LSHIFT_EXPR by a
constant as a sequence of additions depending upon the rtx_costs.
(synth_mult): Update the "observed" cost of a shift, based upon
the above optimization.
--
amylaar at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |roger at eyesopen dot com
Status|UNCONFIRMED |NEW
Component|target |middle-end
Ever Confirmed|0 |1
Known to fail| |4.2.0
Last reconfirmed|0000-00-00 00:00:00 |2006-07-06 19:08:45
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28283
