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[Bug target/51244] SH Target: Inefficient conditional branch
- From: "olegendo at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 30 Aug 2012 22:54:23 +0000
- Subject: [Bug target/51244] SH Target: Inefficient conditional branch
- Auto-submitted: auto-generated
- References: <bug-51244-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51244
--- Comment #49 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-08-30 22:54:23 UTC ---
Kaz, if you have some time, could you please gather some CSiBE runtime numbers
for '-mpretend-cmove' and without it?
I've compared the result-size of the CSiBE set and with -mpretend-cmove there's
a total decrease of 948 bytes, with a few opposite cases.
My idea was to obsolete the -mpretend-cmove option, and instead tie its
behavior the new option -mzdcbranch, which generally is supposed to control any
kind of zero-displacement-branch handling.