[PATCH] fold-const.c use of BRANCH_COST
Fri Apr 11 17:49:00 GMT 2003
David Edelsohn <email@example.com> writes:
> >>>>> Richard Henderson writes:
> Richard> Nothing, except that it'd be better to go at them in a more
> Richard> organized sort of way than a basketful of random defines.
> We can add the knobs for both uses of BRANCH_COST in fold-const.c
> in this pass, if you want. BRANCH_COST isn't actually used in that many
> parts of GCC.
It'd be better if we could assign a meaning to each macro, like
"this is the relative cost of a branch compared to an integer
instruction" rather than "this is the knob you tweak to affect this
code path which may or may not affect this optimisation".
- Geoffrey Keating <firstname.lastname@example.org>
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