https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77916
--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- Author: wschmidt Date: Mon Oct 24 02:41:12 2016 New Revision: 241462 URL: https://gcc.gnu.org/viewcvs?rev=241462&root=gcc&view=rev Log: [gcc] 2016-10-23 Bill Schmidt <wschm...@linux.vnet.ibm.com> Backport from mainline 2016-10-17 Bill Schmidt <wschm...@linux.vnet.ibm.com> PR tree-optimization/77916 * gimple-ssa-strength-reduction.c (create_add_on_incoming_edge): Don't allow a MINUS_EXPR for pointer arithmetic for either known or unknown strides. (record_increment): Increments of -1 for unknown strides just use a multiply initializer like other negative values. (analyze_increments): Remove stopgap solution for -1 increment applied to pointer arithmetic. (insert_initializers): Requirement of initializer for -1 should be based on pointer-typedness of the candidate basis. [gcc/testsuite] 2016-10-23 Bill Schmidt <wschm...@linux.vnet.ibm.com> Backport from mainline 2016-10-17 Bill Schmidt <wschm...@linux.vnet.ibm.com> PR tree-optimization/77916 * gcc.dg/torture/pr77916.c: New. Added: branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr77916.c Modified: branches/gcc-5-branch/gcc/ChangeLog branches/gcc-5-branch/gcc/gimple-ssa-strength-reduction.c branches/gcc-5-branch/gcc/testsuite/ChangeLog
