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[Bug target/53399] "*ffs" pattern generates wrong code with BMI enabled
- From: "uros at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 21 May 2012 15:46:34 +0000
- Subject: [Bug target/53399] "*ffs" pattern generates wrong code with BMI enabled
- Auto-submitted: auto-generated
- References: <bug-53399-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53399
--- Comment #12 from uros at gcc dot gnu.org 2012-05-21 15:46:34 UTC ---
Author: uros
Date: Mon May 21 15:46:25 2012
New Revision: 187722
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187722
Log:
PR target/53399
* config/i386/i386.md (ffs<mode>2): Generate CCCmode compare
for TARGET_BMI.
(ffssi2_no_cmove): Ditto.
(*ffs<mode>_1): Remove insn pattern.
(*tzcnt<mode>_1): New insn pattern.
(*bsf<mode>1): Ditto.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md