[Bug tree-optimization/38401] TreeSSA-PRE load after store misoptimization

[steven 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?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38401