gcc/gcc ChangeLog.tree-ssa tree-tailcall.c

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	law@gcc.gnu.org	2004-03-03 04:23:20

Modified files:
	gcc            : ChangeLog.tree-ssa tree-tailcall.c 

Log message:
	* tree-tailcall.c (struct tailcall): Remove return_block and return_bsi
	fields, add m and a fields.
	(m_acc, a_acc): New.
	(find_tail_calls): Find tail calls on whose results simple operations
	are performed.
	(independent_on_stmt_p, process_assignment,
	propagate_through_phis, adjust_accumulator_values,
	adjust_return_value): New.
	(eliminate_tail_call): Update the accumulators if needed.
	(optimize_tail_call): Do not create phis.
	(tree_optimize_tail_calls): Create phis and accumulators as needed.
	Adjust return values.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.tree-ssa.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.1249&r2=1.1.2.1250
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-tailcall.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.20&r2=1.1.2.21