rs6000-protos.h (rs6000_split_signbit): New prototype.

rs6000-protos.h (rs6000_split_signbit): New prototype.

[gcc]

2016-07-05  Michael Meissner  <meissner@linux.vnet.ibm.com>
	    Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000-protos.h (rs6000_split_signbit): New
	prototype.
	* config/rs6000/rs6000.c (rs6000_split_signbit): New function.
	* config/rs6000/rs6000.md (UNSPEC_SIGNBIT): New constant.
	(SIGNBIT): New mode iterator.
	(Fsignbit): New mode attribute.
	(signbit<mode>2): Change operand1 to match FLOAT128 instead of
	IBM128; dispatch to gen_signbit{kf,tf}2_dm for __float128
	when direct moves are available.
	(signbit<mode>2_dm): New define_insn_and_split).
	(signbit<mode>2_dm2): New define_insn.

[gcc/testsuite]

2016-07-05  Michael Meissner  <meissner@linux.vnet.ibm.com>
	    Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/signbit-1.c: New test.
	* gcc.target/powerpc/signbit-2.c: New test.
	* gcc.target/powerpc/signbit-3.c: New test.

Co-Authored-By: Bill Schmidt <wschmidt@linux.vnet.ibm.com>
From-SVN: r238016