i386.md (absneg splitters with general regs): Use general_reg_operand predicate.

i386.md (absneg splitters with general regs): Use general_reg_operand predicate.

	* config/i386/i386.md (absneg splitters with general regs): Use
	general_reg_operand predicate.
	(btsq peephole2): Use x86_64_immediate_operand to check if new
	value is suitable for immediate operand.  Generate emitted insn
	using RTL expressions.
	(btcq peephole2): Ditto.
	(btrq peephole2): Ditto.  Generate correct immediate operand
	for AND masking.

testsuite/ChangeLog:

	* gcc.target/i386/fabsneg-1.c New test.

From-SVN: r236042