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Re: 4.3.0 strange problem with computation and optimization
"Dario Saccavino" <kathoum@gmail.com> writes:
> Anybody knows if using -msse2 -mfpmath=sse can help obtain a better
> conformant assembly? The sse regs should have the correct precision
> (32 for float, 64 for double), so maybe part of the undesired
> behaviour can be avoided.
Yes, using those options makes your floating point operations
generally immune to gcc's register allocation decisions.
That is the default in 64-bit mode.
Ian