i386.h (processor_costs): Add new fields fadd, fmul, fdiv, fabs, fchs and fsqrt to...

i386.h (processor_costs): Add new fields fadd, fmul, fdiv, fabs, fchs and fsqrt to costs structure.

	* 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