https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110309
--- Comment #6 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:1f5591a9578b8cacda9d4c73a25d93598d68e028 commit r12-9742-g1f5591a9578b8cacda9d4c73a25d93598d68e028 Author: liuhongt <hongtao....@intel.com> Date: Tue Jun 20 15:41:00 2023 +0800 Refine maskloadmn pattern with UNSPEC_MASKLOAD. 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_MASKLOAD to prevent it to be transformed to vpblendd. gcc/ChangeLog: PR target/110309 * config/i386/sse.md (maskload<mode><avx512fmaskmodelower>): Refine pattern with UNSPEC_MASKLOAD. (maskload<mode><avx512fmaskmodelower>): Ditto. (*<avx512>_load<mode>_mask): Extend mode iterator to VI12HF_AVX512VL. (*<avx512>_load<mode>): Ditto. gcc/testsuite/ChangeLog: * gcc.target/i386/pr110309.c: New test.