[Bug target/33928] [4.3 Regression] 22% performance slowdown from 4.2.2 to 4.3.0 in floating-point code

[rguenth at gcc dot gnu dot org]

------- Comment #28 from rguenth at gcc dot gnu dot org  2008-01-22 12:38 
-------
This is an alias partitioning problem, with --param max-aliased-vops=10000 I
see the sequence optimized by FRE.  Or, with the alias-oracle patch for FRE
--param max-fields-for-field-sensitive=1 does the job as well.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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           Keywords|                            |alias


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33928