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[Bug rtl-optimization/53352] Incorrect CSE optimization on RTL expressions with a paradoxical subreg
- 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: Thu, 17 May 2012 18:29:27 +0000
- Subject: [Bug rtl-optimization/53352] Incorrect CSE optimization on RTL expressions with a paradoxical subreg
- Auto-submitted: auto-generated
- References: <bug-53352-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53352
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |steven at gcc dot gnu.org
--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> 2012-05-17 18:29:27 UTC ---
(In reply to comment #3)
That test case isn't particularly good, either. If something like IPA-CP or
inlining becomes the default at -O1, your whole test cases optimizes to a
no-op. And, at least AFAICT, your test case doesn't even specifically test for
the incorrect transformation.