gcc/

2007-xx-xx  Chao-ying Fu  <fu@mips.com>
	    Richard Sandiford  <richard@nildram.co.uk>

	* doc/md.texi (madd@var{m}@var{n}4, umadd@var{m}@var{n}4): Document.
	* optabs.h (OTI_smadd_widen, OTI_umadd_widen): New optab_indexes.
	(smadd_widen_optab, umadd_widen_optab): Define.
	* optabs.c (init_optabs): Initialize smadd_widen_optab and
	umadd_widen_optab.
	* genopinit.c (optabs): Fill in smadd_widen_optab and
	umadd_widen_optab.
	* expr.c (expand_expr_real_1): Try to use smadd_widen_optab
	and umadd_widen_optab to implement multiply-add sequences.
	* config/mips/mips.md (*<su>mul_acc_di): Rename to...
	(<u>maddsidi4): ...this.  Extend condition to include
	GENERATE_MADD_MSUB and TARGET_DSPR2.  Change the constraint
	of operand 0 to "ka" and use the three-operand form of madd<u>
	for TARGET_DSPR2.
	* config/mips/mips-dspr2.md (mips_madd, mips_maddu): Convert
	to define_expands.
	* config/mips/constraints.md (ka): New register constraint.

gcc/testsuite/
2007-xx-xx  Richard Sandiford  <richard@nildram.co.uk>

	* gcc.target/mips/madd-1.c, gcc.target/mips/madd-2.c,
	* gcc.target/mips/madd-3.c, gcc.target/mips/madd-4.c,
	* gcc.target/mips/maddu-1.c, gcc.target/mips/maddu-2.c,
	* gcc.target/mips/maddu-3.c, gcc.target/mips/maddu-4.c: New tests.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@124095 138bc75d-0d04-0410-961f-82ee72b054a4

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