https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85529
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Fri Jun 22 21:19:32 2018 New Revision: 261959 URL: https://gcc.gnu.org/viewcvs?rev=261959&root=gcc&view=rev Log: Backported from mainline 2018-04-27 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/85529 * tree-ssa-reassoc.c (optimize_range_tests_var_bound): Add FIRST_BB argument. Don't call get_nonzero_bits if opcode is ERROR_MARK_NODE, rhs2 def stmt's bb is dominated by first_bb and it isn't an obvious zero extension or masking of the MSB bit. (optimize_range_tests): Add FIRST_BB argument, pass it through to optimize_range_tests_var_bound. (maybe_optimize_range_tests, reassociate_bb): Adjust optimize_range_tests callers. * gcc.c-torture/execute/pr85529-1.c: New test. * gcc.c-torture/execute/pr85529-2.c: New test. * gcc.dg/pr85529.c: New test. Added: branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/pr85529-1.c branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/execute/pr85529-2.c branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr85529.c Modified: branches/gcc-7-branch/gcc/ChangeLog branches/gcc-7-branch/gcc/testsuite/ChangeLog branches/gcc-7-branch/gcc/tree-ssa-reassoc.c
