2011-12-05 Richard Guenther <rguenther@suse.de>
+ PR tree-optimization/50904
+ * tree-ssa-loop-im.c (struct mem_ref): Remove vops member.
+ (MEM_ANALYZABLE): New.
+ (memory_references): Remove clobbered_vops and vop_ref_map
+ members, add all_refs_stored_in_loop member.
+ (memref_free): Adjust.
+ (mem_ref_alloc): Likewise.
+ (gather_mem_refs_stmt): Do not record clobbers, instead
+ record refs for unanalyzable stmts.
+ (gather_mem_refs_in_loops): Do not propagate clobbers.
+ (struct vop_to_refs_elt, vtoe_hash, vtoe_eq, vtoe_free,
+ record_vop_access, get_vop_accesses, get_vop_stores,
+ add_vop_ref_mapping): Remove.
+ (create_vop_ref_mapping_loop): Adjust to simply record all
+ stores.
+ (analyze_memory_references): Adjust.
+ (refs_independent_p): Check for not analyzable refs.
+ (can_sm_ref_p): Likewise.
+ (ref_indep_loop_p_1): Simplify.
+ (tree_ssa_lim_finalize): Adjust.
+
+ * tree-ssa-loop-im.c (stmt_cost): Simplify, use LIM_EXPENSIVE
+ rather than magic constants. Assign zero cost to PAREN_EXPR
+ and SSA_NAME copies. Assign cost proportional to the vector
+ size for vector constructors.
+
+2011-12-05 Richard Guenther <rguenther@suse.de>
+
* tree-ssa-alias.h (struct ao_ref_s): Add volatile_p field.
* tree-ssa-alias.c (ao_ref_init): Initialize it.
(ao_ref_init_from_ptr_and_size): Likewise.
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