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[Bug target/49687] [4.6 Regression][avr] Missed optimization for widening MUL
- From: "gjl at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 29 Jul 2011 11:27:47 +0000
- Subject: [Bug target/49687] [4.6 Regression][avr] Missed optimization for widening MUL
- Auto-submitted: auto-generated
- References: <bug-49687-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49687
--- Comment #6 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-07-29 11:27:45 UTC ---
Author: gjl
Date: Fri Jul 29 11:27:39 2011
New Revision: 176923
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176923
Log:
PR target/49687
* config/avr/avr.md (mulsi3, *mulsi3, mulu<mode>si3,
muls<mode>si3, mulohisi3, mulhisi3, umulhisi3, usmulhisi3,
*<any_extend:extend_prefix><any_extend2:extend_prefix>mul<QIHI:mode><QIHI2:mode>si3):
Add X to register footprint: Clobber r26/r27.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/avr/avr.md