[Bug optimization/12092] ICE: Floating point exception

[kcook at gcc dot gnu dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12092



------- Additional Comments From kcook at gcc dot gnu dot org  2003-09-09 20:18 -------
A different question is shouldn't -march=pentium4 -mtune=i486 be declared invalid?

To me, tuning (ie scheduling) for a processor that is less than the baseline
architecture (which -march specifies) just seems wrong.

The 486 didn't know about SSE2, it didn't know about SSE, it didn't know about
MMX, it didn't even know about CMOV, but by specifying -march=pentium4 all of
those features are enabled.  So, there is no way for the scheduler to come up
with a correct schedule.