Add support for vectorized fma.

Add support for vectorized fma.

2012-09-11  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
	    Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* config/arm/neon.md (fma<VCVTF:mode>4): New pattern.
	(*fmsub<VCVTF:mode>4): Likewise.
	* doc/sourcebuild.texi (arm_neon_v2_ok, arm_neon_v2_hw):  Document it.

2012-09-11  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
	    Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gcc.target/arm/neon-vfma-1.c: New testcase.
	* gcc.target/arm/neon-vfms-1.c: Likewise.
	* gcc.target/arm/neon-vmla-1.c: Update test to use int instead
	of float.
	* gcc.target/arm/neon-vmls-1.c: Likewise.
	* lib/target-supports.exp (add_options_for_arm_neonv2): New
	function.
	(check_effective_target_arm_neonv2_ok_nocache): Likewise.
	(check_effective_target_arm_neonv2_ok): Likewise.
	(check_effective_target_arm_neonv2_hw): Likewise.
	(check_effective_target_arm_neonv2): Likewise.

Co-Authored-By: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>
From-SVN: r191180