r166304 - in /trunk/gcc: ChangeLog builtins.c c...

[rguenth at gcc dot gnu dot org]

Author: rguenth
Date: Thu Nov  4 10:56:22 2010
New Revision: 166304

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166304
Log:
2010-11-04  Richard Guenther  <rguenther@suse.de>
	Richard Henderson  <rth@redhat.com>

	* tree.def (FMA_EXPR): New tree code.
	* expr.c (expand_expr_real_2): Add FMA_EXPR expansion code.
	* gimple.c (gimple_rhs_class_table): FMA_EXPR is a GIMPLE_TERNARY_RHS.
	* tree-cfg.c (verify_gimple_assign_ternary): Verify FMA_EXPR types.
	* tree-inline.c (estimate_operator_cost): Handle FMA_EXPR.
	* gimple-pretty-print.c (dump_ternary_rhs): Likewise.
	* tree-ssa-math-opts.c (convert_mult_to_fma): New function.
	(execute_optimize_widening_mul): Call it.  Reorganize to allow
	dead stmt removal.  Move TODO flags ...
	(pass_optimize_widening_mul): ... here.
	* flag-types.h (enum fp_contract_mode): New enum.
	* common.opt (flag_fp_contract_mode): New variable.
	(-ffp-contract): New option.
	* opts.c (common_handle_option): Handle it.
	* doc/invoke.texi (-ffp-contract): Document.
	* tree.h (fold_fma): Declare.
	* builtins.c (fold_fma): New function.
	(fold_builtin_fma): Likewise.
	(fold_builtin_3): Call it for fma.
	* fold-const.c (fold_ternary_loc): Fold FMA_EXPR.
	* optabs.c (optab_for_tree_code): Handle FMA_EXPR.
	* config/i386/sse.md (fms<mode>4, fnma<mode>, fnms<mode>4):
	New expanders.
	* doc/md.texi (fms<mode>4, fnma<mode>, fnms<mode>4): Document new
	named patterns.
	* genopinit.c (optabs): Initialize fms_optab, fnma_optab and fnms_optab.
	* optabs.h (enum optab_index): Add OTI_fms, OTI_fnma and OTI_fnms.
	(fms_optab, fnma_optab, fnms_optab): New defines.
	* gimplify.c (gimplify_expr): Handle binary truth expressions
	explicitly.  Handle FMA_EXPR.
	* tree-vect-stmts.c (vectorizable_operation): Handle ternary
	operations.

	* gcc.target/i386/fma4-vector-2.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/fma4-vector-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/common.opt
    trunk/gcc/config/i386/sse.md
    trunk/gcc/doc/invoke.texi
    trunk/gcc/doc/md.texi
    trunk/gcc/expr.c
    trunk/gcc/flag-types.h
    trunk/gcc/fold-const.c
    trunk/gcc/genopinit.c
    trunk/gcc/gimple-pretty-print.c
    trunk/gcc/gimple.c
    trunk/gcc/gimplify.c
    trunk/gcc/optabs.c
    trunk/gcc/optabs.h
    trunk/gcc/opts.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfg.c
    trunk/gcc/tree-inline.c
    trunk/gcc/tree-ssa-math-opts.c
    trunk/gcc/tree-vect-stmts.c
    trunk/gcc/tree.def
    trunk/gcc/tree.h