https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101082
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-11 branch has been updated by David Malcolm <dmalc...@gcc.gnu.org>: https://gcc.gnu.org/g:21b470a9c976f3db7cce6d58a07c58a58676f93c commit r11-8681-g21b470a9c976f3db7cce6d58a07c58a58676f93c Author: David Malcolm <dmalc...@redhat.com> Date: Fri Jul 2 15:19:46 2021 -0400 analyzer: fix bitfield endianness issues [PR99212,PR101082] Looks like my patch for PR analyzer/99212 implicitly assumed little-endian, which the following patch fixes. Fixes bitfields-1.c on: - armeb-none-linux-gnueabihf - cris-elf - powerpc64-darwin - s390-linux-gnu gcc/analyzer/ChangeLog: PR analyzer/99212 PR analyzer/101082 * engine.cc: Include "target.h". (impl_run_checkers): Log BITS_BIG_ENDIAN, BYTES_BIG_ENDIAN, and WORDS_BIG_ENDIAN. * region-model-manager.cc (region_model_manager::maybe_fold_binop): Move support for masking via ARG0 & CST into... (region_model_manager::maybe_undo_optimize_bit_field_compare): ...this new function. Flatten by converting from nested conditionals to a series of early return statements to reject failures. Reject if type is not unsigned_char_type_node. Handle BYTES_BIG_ENDIAN when determining which bits are bound in the binding_map. * region-model.h (region_model_manager::maybe_undo_optimize_bit_field_compare): New decl. * store.cc (bit_range::dump): New function. * store.h (bit_range::dump): New decl. Signed-off-by: David Malcolm <dmalc...@redhat.com>
