r205655 - in /trunk/gcc: ChangeLog gimple-ssa-s...

[yufeng at gcc dot gnu dot org]

Author: yufeng
Date: Wed Dec  4 08:06:16 2013
New Revision: 205655

URL: http://gcc.gnu.org/viewcvs?rev=205655&root=gcc&view=rev
Log:
gcc/

	* gimple-ssa-strength-reduction.c: Include tree-affine.h.
	(name_expansions): New static variable.
	(alt_base_map): Ditto.
	(get_alternative_base): New function.
	(find_basis_for_candidate): For CAND_REF, optionally call
	find_basis_for_base_expr with the returned value from
	get_alternative_base.
	(record_potential_basis): Add new parameter 'base' of type 'tree';
	add an assertion of non-NULL base; use base to set node->base_expr.
	(alloc_cand_and_find_basis): Update; call record_potential_basis
	for CAND_REF with the returned value from get_alternative_base.
	(replace_refs): Dump details on the replacing.
	(execute_strength_reduction): Call pointer_map_create for
	alt_base_map; call free_affine_expand_cache with &name_expansions.

gcc/testsuite/

	* gcc.dg/tree-ssa/slsr-39.c: Update.
	* gcc.dg/tree-ssa/slsr-41.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/slsr-41.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-strength-reduction.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/slsr-39.c