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[Bug target/50131] Optimize x = -1 with "or" for -O
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 19 Aug 2011 20:58:00 +0000
- Subject: [Bug target/50131] Optimize x = -1 with "or" for -O
- Auto-submitted: auto-generated
- References: <bug-50131-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50131
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-19 20:58:00 UTC ---
There are 1273 "movl $0xffffffff," and 924 "movq 0xffffffffffffffff,"
in cc1plus. This change can reduce cc1plus size by 6242 bytes.