Committed on behalf of Matthew Wahab

Committed on behalf of Matthew Wahab

gcc/
2017-05-16  Matthew Wahab  <matthew.wahab@arm.com>

	* config/arm/arm_neon.h (vadd_f16): Use standard arithmetic
	operations in fast-math mode.
	(vaddq_f16): Likewise.
	(vmul_f16): Likewise.
	(vmulq_f16): Likewise.
	(vsub_f16): Likewise.
	(vsubq_f16): Likewise.
	* config/arm/neon.md (add<mode>3): New.
	(sub<mode>3): New.
	(fma:<VH:mode>3): New.  Also remove outdated comment.
	(mul<mode>3): New.

testsuite/
2017-05-16  Matthew Wahab  <matthew.wahab@arm.com>

	* gcc.target/arm/armv8_2-fp16-arith-1.c: Expand comment.  Update
	expected output of vadd, vsub and vmul instructions.
	* gcc.target/arm/armv8_2-fp16-arith-2.c: New.
	* gcc.target/arm/armv8_2-fp16-neon-2.c: New.
	* gcc.target/arm/armv8_2-fp16-neon-3.c: New.

From-SVN: r248090