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-mfpmath=sse,387 is experimental ?
- From: Timothy Madden <terminatorul at gmail dot com>
- To: gcc at gcc dot gnu dot org
- Date: Sat, 7 Mar 2009 22:01:52 +0200
- Subject: -mfpmath=sse,387 is experimental ?
Hello
Is -mfpmath=both for i386 and x86-64 still experimental in gcc 4.3, as
the in the online manual page ?
`sse,387'`sse+387'`both'Attempt to utilize both instruction sets at
once. This effectively double the amount of available registers and on
chips with separate execution units for 387 and SSE the execution
resources too. Use this option with care, as it is still experimental,
because the GCC register allocator does not model separate functional
units well resulting in instable performance.
Thank you,
Timothy Madden