[PATCH v2] MIPS: MIPS32r2 FP MADD instruction set support

[Richard Sandiford]

"Maciej W. Rozycki" <macro@codesourcery.com> writes:
>  I have regression-tested this change with the mips-linux-gnu target and 
> the mips32r2/o32 multilib.  I have also verified that the instructions 
> affected were absent across the binaries produced by the testsuite before 
> applying this change and present afterwards.  For some reason only MADD.S, 
> MADD.D, MSUB.S and MSUB.D instructions were produced though -- it looks 
> like none of NMADD.S, NMADD.D, NMSUB.S and NMSUB.D instructions has
> coverage in our testsuite.

Hmm, can you double-check?  We have gcc.target/mips/nmadd-*, so if we're
not producing the instructions there then that sounds like a bug.

Thanks,
Richard