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[Bug target/46357] Unnecessary movzx instruction
- From: "justin.lebar+bug at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 8 Nov 2010 17:08:39 +0000
- Subject: [Bug target/46357] Unnecessary movzx instruction
- Auto-submitted: auto-generated
- References: <bug-46357-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46357
--- Comment #2 from Justin Lebar <justin.lebar+bug at gmail dot com> 2010-11-08 17:08:36 UTC ---
(In reply to comment #1)
> We always use zero/sign-extending moves to avoid partial register stalls.
Sure, but the whole instruction on line 10 is unnecessary.