* config/i386/i386.h (processor_costs): Add new fields fadd,
fmul, fdiv, fabs, fchs and fsqrt to costs structure.
(RTX_COSTS): Use these fields to determine the RTX costs
of floating point addition/subtraction, multiplication,
division, fabs, negation and square root respectively.
* config/i386/i386.c (size_cost): Provide instruction sizes
for these new fields.
(i386_cost, i486_cost, pentium_cost, pentiumpro_cost,
k6_cost, athlon_cost, pentium4_cost): Provide typical cycle
counts for these new fields for all x86 processor variants.
From-SVN: r57820
