re PR target/27968 (gcc emits (undefined) ffreep opcode which is not understood by...

re PR target/27968 (gcc emits (undefined) ffreep opcode which is not understood by Solaris' /usr/ccs/bin/as when tuning for Athlon or Opteron CPUs)

	PR target/27968
	* configure.ac (HAVE_AS_IX86_FFREEP): On x86 targets check whether
	the configured assembler supports the x87's ffreep mnemonic.
	* configure: Regenerate.
	* config.in: Regenerate.

	* config/i386/i386.c (output_387_ffreep): New function.
	(output_fp_compare): Use output_387_ffreep to emit ffreep insns.
	(output_387_reg_move): Likewise.

From-SVN: r115237