[LLVMdev] Swaps of FP registers

[Scott Graham]

On 7/3/07, Fernando Magno Quintao Pereira <fernando at cs.ucla.edu> wrote:
>
>      what is the best way to implement a swap of floating point registers
> in X86? For the integer registers, I am using xchg. Is there a similar
> instruction for floating point?


FXCH swaps stN with st0, but you'd have to use memory for arbitrary swaps I
believe. I have no idea if it's the "best" though.
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