Re: [x86] fix FMA cost computation

2011-05-30 Thread Bernd Schmidt
On 05/30/2011 12:07 PM, Alexandre Oliva wrote: > One of my patches for PR48866 mysteriously regressed fma3-fma.c. It > turned out that a rearrangement in the order of emitting insns during > expansion caused combine to attempt combinations in a different order, > and this ended up exposing a laten

[x86] fix FMA cost computation

2011-05-30 Thread Alexandre Oliva
One of my patches for PR48866 mysteriously regressed fma3-fma.c. It turned out that a rearrangement in the order of emitting insns during expansion caused combine to attempt combinations in a different order, and this ended up exposing a latent error in the cost computation of FMA insns, that caus