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Re: Bootstrap times on mainline are getting worse


Roger wrote:
Also be carefull about changing these RTX costs to unsigned char.
Pentium4 already has integer division costs at around 120, and
improvements in superscalar issue vs memory latency could easily
push values above 256 on x86 within only a year or so.  Just look
at the curves for i386, i486, pentium, pentiumpro, pentium4....
I don't see how it can hurt to max out the cost at some point.
If we select an instruction with a cost higher than 100, it must
mean there is little alternative but to use that instruction.

  -Geert


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