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[Bug rtl-optimization/44025] Multiple load 0 to register
- From: "steven at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 24 Jul 2012 15:51:39 +0000
- Subject: [Bug rtl-optimization/44025] Multiple load 0 to register
- Auto-submitted: auto-generated
- References: <bug-44025-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44025
--- Comment #6 from Steven Bosscher <steven at gcc dot gnu.org> 2012-07-24 15:51:39 UTC ---
(In reply to comment #4)
> The questions are:
> 1, why pre does not do such optimization;
Because PRE (gcse.c) doesn't run at -Os.