[Bug rtl-optimization/19780] Floating point computation far slower for -mfpmath=sse

[amacleod at redhat dot com]

------- Comment #17 from amacleod at redhat dot com  2007-04-05 14:23 -------
Is the output from .optimized different?  (once the ssa versions numbers have
been stripped).   Those PHIs should be irrelevant, the question is whether the
different versioning has any effect.    

The only way I can think that out-of-ssa could produce different results is if
it had to choose between two same-cost coalesces, and the versioning resulted
in them being in different places in the coalesce list.  Check the .optimized
output and if the code is equivalent, the problem is after that stage.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19780