https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113199
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tamar Christina <tnfch...@gcc.gnu.org>: https://gcc.gnu.org/g:80bb94e88faaadd4d6f008fececb46214dc89e9f commit r14-7065-g80bb94e88faaadd4d6f008fececb46214dc89e9f Author: Tamar Christina <tamar.christ...@arm.com> Date: Tue Jan 9 13:35:49 2024 +0000 middle-end: check if target can do extract first for early breaks [PR113199] I was generating the vector reverse mask without checking if the target actually supported such an operation. This patch changes it to if the bitstart is 0 then use BIT_FIELD_REF instead to extract the first element since this is supported by all targets. This is good for now since masks always come from whilelo. But in the future when masks can come from other sources we will need the old code back. gcc/ChangeLog: PR tree-optimization/113199 * tree-vect-loop.cc (vectorizable_live_operation_1): Use BIT_FIELD_REF. gcc/testsuite/ChangeLog: PR tree-optimization/113199 * gcc.target/gcn/pr113199.c: New test.
