Makefile.in: Add tree-ssa-math-opts.c.

Makefile.in: Add tree-ssa-math-opts.c.

gcc:
2005-05-17  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in: Add tree-ssa-math-opts.c.
	* expr.c (expand_expr_real_1) <case RDIV_EXPR>: Never emit as a*(1/b).
	* fold-const.c (distribute_real_division): New.
	(fold_binary) <case PLUS_EXPR, case MINUS_EXPR>: Use it.
	* tree-pass.h (pass_cse_reciprocals): New.
	* tree-optimize.c (init_tree_optimization_passes): Run it.
	* tree-ssa-math-opts.c: New file.
	* doc/passes.texi: Document the new pass.

gcc/testsuite:
2005-05-17  Paolo Bonzini  <bonzini@gnu.org>

	* gcc.dg/fold-div-1.c, gcc.dg/recip-1.c, gcc.dg/recip-2.c: New.

From-SVN: r99826