https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103894
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Uros Bizjak <u...@gcc.gnu.org>: https://gcc.gnu.org/g:1096ab1775636f35de9c6661f8f71f03299af998 commit r12-6194-g1096ab1775636f35de9c6661f8f71f03299af998 Author: Uros Bizjak <ubiz...@gmail.com> Date: Mon Jan 3 20:58:16 2022 +0100 i386: Always enable mov<V_32:mode> patterns [PR103894] Middle end tries to generate V4QImode moves to implement V2QImode inserts and calls emit_move_multi_word when V4QImode moves are unavailable, as is the case with 32-bit vector moves, constrainted with TARGET_SSE2. However, this triggers gcc_assert (mode_size >= UNITS_PER_WORD); in emit_move_multi_word, since mode_size of V4QImode operand is less than UNITS_PER_WORD of 64-bit targets. The patch unconditionally enables 32-bit vector moves to match 16-bit vector moves. This also enables implementation of 32-bit vector logic operations with GPR in a follow-up patch. 2022-01-03 Uroš Bizjak <ubiz...@gmail.com> gcc/ChangeLog: PR target/103894 * config/i386/mmx.md (mov<V_32:mode>): Remove TARGET_SSE2 constraint. (mov<V_32:mode>_internal): Ditto. (*push<V_32:mode>_rex64): Ditto. (movmisalign<V_32:mode>): Ditto. (*push<V_32:mode>_rex64 splitter): Enable for TARGET_64BIT && TARGET_SSE. (*push<V_32:mode>2): Remove insn pattern. gcc/testsuite/ChangeLog: PR target/103894 * gcc.target/i386/pr103894.c: New test.
