r253483 - in /trunk/gcc: ChangeLog fold-const.c...

[jakub@gcc.gnu.org]

Author: jakub
Date: Fri Oct  6 09:39:07 2017
New Revision: 253483

URL: https://gcc.gnu.org/viewcvs?rev=253483&root=gcc&view=rev
Log:
	PR tree-optimization/82434
	* fold-const.h (can_native_encode_type_p,
	can_native_encode_string_p): Remove.
	* fold-const.c (native_encode_int): Formatting fixes.  If ptr is NULL,
	don't encode anything, just return what would be otherwise returned.
	(native_encode_fixed, native_encode_complex, native_encode_vector):
	Likewise.
	(native_encode_string): Likewise.  Inline by hand
	can_native_encode_string_p.
	(can_native_encode_type_p): Remove.
	(can_native_encode_string_p): Remove.
	* tree-vect-stmts.c (vectorizable_store): Instead of testing just
	STRING_CSTs using can_native_encode_string_p, test all
	CONSTANT_CLASS_P values using native_encode_expr with NULL ptr.
	* gimple-ssa-store-merging.c (encode_tree_to_bitpos): Remove last
	argument from native_encode_expr.
	(rhs_valid_for_store_merging_p): Use native_encode_expr with NULL ptr.
	(pass_store_merging::execute): Don't unnecessarily look for 3 stmts,
	but just 2.

	* gcc.dg/store_merging_9.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/store_merging_9.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/fold-const.h
    trunk/gcc/gimple-ssa-store-merging.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-stmts.c