https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71915
--- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- Author: wschmidt Date: Mon Oct 31 03:04:59 2016 New Revision: 241695 URL: https://gcc.gnu.org/viewcvs?rev=241695&root=gcc&view=rev Log: [gcc] 2016-10-30 Bill Schmidt <wschm...@linux.vnet.ibm.com> PR tree-optimization/71915 PR tree-optimization/71490 * gimple-ssa-strength-reduction.c (struct slsr_cand_d): Add stride_type field. (find_basis_for_base_expr): Require stride types to match when seeking a basis. (alloc_cand_and_find_basis): Record the stride type. (slsr_process_phi): Pass stride type to alloc_cand_and_find_basis. (backtrace_base_for_ref): Pass types to legal_cast_p_1 rather than the expressions having those types. (slsr_process_ref): Pass stride type to alloc_cand_and_find_basis. (create_mul_ssa_cand): Likewise. (create_mul_imm_cand): Likewise. (create_add_ssa_cand): Likewise. (create_add_imm_cand): Likewise. (legal_cast_p_1): Change interface to accept types rather than the expressions having those types. (legal_cast_p): Pass types to legal_cast_p_1. (slsr_process_cast): Pass stride type to alloc_cand_and_find_basis. (slsr_process_copy): Likewise. (dump_candidate): Display stride type when a cast exists. (create_add_on_incoming_edge): Introduce a cast when necessary for the stride type. (analyze_increments): Change the code checking for invalid casts to rely on the stride type, and update the documentation and example. Change the code checking for pointer multiplies to rely on the stride type. (insert_initializers): Introduce a cast when necessary for the stride type. Use the stride type for the type of the initializer. [gcc/testsuite] 2016-10-30 Bill Schmidt <wschm...@linux.vnet.ibm.com> PR tree-optimization/71915 PR tree-optimization/71490 * gcc.dg/tree-ssa/pr54245.c: Delete. * gcc.dg/tree-ssa/slsr-8.c: Adjust for new optimization and document why. Removed: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr54245.c Modified: trunk/gcc/ChangeLog trunk/gcc/gimple-ssa-strength-reduction.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/tree-ssa/slsr-8.c
