https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110237
--- Comment #24 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by hongtao Liu <liuho...@gcc.gnu.org>: https://gcc.gnu.org/g:a435939ba7e5e489a422071014f943c1a577bfe6 commit r12-9743-ga435939ba7e5e489a422071014f943c1a577bfe6 Author: liuhongt <hongtao....@intel.com> Date: Mon Jun 26 21:07:09 2023 +0800 Refine maskstore patterns with UNSPEC_MASKMOV. Similar like r14-2070-gc79476da46728e If mem_addr points to a memory region with less than whole vector size bytes of accessible memory and k is a mask that would prevent reading the inaccessible bytes from mem_addr, add UNSPEC_MASKMOV to prevent it to be transformed to any other whole memory access instructions. gcc/ChangeLog: PR rtl-optimization/110237 * config/i386/sse.md (<avx512>_store<mode>_mask): Refine with UNSPEC_MASKMOV. (maskstore<mode><avx512fmaskmodelower): Ditto. (*<avx512>_store<mode>_mask): New define_insn, it's renamed from original <avx512>_store<mode>_mask.
