[Bug target/27855] [4.3/4.4 regression] reassociation causes the RA to be confused

[ubizjak at gmail dot com]

------- Comment #26 from ubizjak at gmail dot com  2008-11-13 14:52 -------
(In reply to comment #25)
> Now that we have a new RA, is this still an issue?

Yes.

TYPE=double:
gcc -DREPS=1000 -msse3 -O2 -mfpmath=sse -ffast-math -fno-tree-reassoc:
atlasmm       60   1000       0.196     2203.95
gcc -DREPS=1000 -msse3 -O2 -mfpmath=sse -ffast-math
atlasmm       60   1000       0.276     1565.12

TYPE=float:
gcc -DREPS=1000 -msse3 -O2 -mfpmath=sse -ffast-math -fno-tree-reassoc
atlasmm       60   1000       0.160     2699.83

gcc -DREPS=1000 -msse3 -O2 -mfpmath=sse -ffast-math
atlasmm       60   1000       0.232     1861.96

gcc version 4.4.0 20081113 (experimental) [trunk revision 141819] (GCC)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27855