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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/54830] New: [SH] Unnecessary exts.w before extu.b Date: Sat, 06 Oct 2012 00:04:00 -0000 [thread overview] Message-ID: <bug-54830-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54830 Bug #: 54830 Summary: [SH] Unnecessary exts.w before extu.b Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: target AssignedTo: unassigned@gcc.gnu.org ReportedBy: olegendo@gcc.gnu.org Target: sh*-*-* While working on another issue, I've spotted the following sequence swap.w r11,r1 exts.w r1,r1 extu.b r1,r2 mov.l @(16,r12),r1 in CSiBE/jpeg-6b/jcphuff.c, function _emit_eobrun, when compiling with -m4-single -ml -O2 -mpretend-cmove. I will try to investigate that later.
next reply other threads:[~2012-10-06 0:04 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-10-06 0:04 olegendo at gcc dot gnu.org [this message] 2012-10-18 19:24 ` [Bug target/54830] " olegendo at gcc dot gnu.org 2012-10-18 19:25 ` olegendo at gcc dot gnu.org 2012-11-07 21:27 ` olegendo at gcc dot gnu.org
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