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[Bug tree-optimization/38401] TreeSSA-PRE load after store misoptimization
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Dec 2008 18:16:05 -0000
- Subject: [Bug tree-optimization/38401] TreeSSA-PRE load after store misoptimization
- References: <bug-38401-16914@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #8 from steven at gcc dot gnu dot org 2008-12-04 18:16 -------
Created an attachment (id=16828)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16828&action=view)
.gcse1 dump of r142405 on ia64-linux
I still don't see why this is caught on powerpc by RTL PRE, but not on ia64
(note *ia64*, not x86). I compile with -O3 -fgcse-las. The compiler is
yesterday's trunk on ia64-unknown-linux-gnu. The .gcse1 dump is attached. Why
is it optimized for you on powerpc but not for me on ia64?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38401