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Re: [Lightning] About jit_roundr_d_i

From: Paulo César Pereira de Andrade
Subject: Re: [Lightning] About jit_roundr_d_i
Date: Sun, 12 Sep 2010 12:23:19 -0300

Em 11 de setembro de 2010 11:00, Paulo César Pereira de Andrade

>> I am a bit wary of introducing new opcodes since that would have to be
>> done for PowerPC and SPARC too.

  It could be some kind of extension. For example, not offering sin/cos/tan/etc
when easily available looks wrong. It could still do something "weird" on
other platforms, like:
#define jit_sqrt_d(rd, rs) \
 (jit_prepare(0), \
  jit_prepare_d(1), \
    jit_pusharg_d(rs), \
  jit_finish(sqrt), \

but things can get ugly if that invalidates JIT_FPR(n) register contents.


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