https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94598
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Martin Jambor <jamb...@gcc.gnu.org>: https://gcc.gnu.org/g:bd87b1fddbbe7d424671ebf81c96e12d748fafc7 commit r10-7751-gbd87b1fddbbe7d424671ebf81c96e12d748fafc7 Author: Martin Jambor <mjam...@suse.cz> Date: Thu Apr 16 11:04:41 2020 +0200 sra: Fix access verification (PR 94598) get_ref_base_and_extent recognizes ARRAY_REFs with variable index but into arrays of length one as constant offset accesses. However, max_size in such cases is extended to span the whole element. This confuses SRA verification when SRA also builds its (total scalarization) access structures to describe fields under such array - get_ref_base_and_extent returns different size and max_size for them. Fixed by not performing the check for total scalarization accesses. The subsequent check then had to be changed to use size and not max_size too, which meant it has to be skipped when the access structure describes a genuine variable array access. Bootstrapped and tested on x86_64-linux. 2020-04-16 Martin Jambor <mjam...@suse.cz> PR tree-optimization/94598 * tree-sra.c (verify_sra_access_forest): Fix verification of total scalarization accesses under access to one-element arrays. testsuite/ * gcc.dg/tree-ssa/pr94598.c: New test.
