https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111449
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by HaoChen Gui <guih...@gcc.gnu.org>: https://gcc.gnu.org/g:cd295a80c91040fd4d826528c8e8e07fe909ae62 commit r14-5548-gcd295a80c91040fd4d826528c8e8e07fe909ae62 Author: Haochen Gui <guih...@gcc.gnu.org> Date: Fri Nov 17 17:12:32 2023 +0800 rs6000: Enable vector mode for by pieces equality compare This patch adds a new expand pattern - cbranchv16qi4 to enable vector mode by pieces equality compare on rs6000. The macro MOVE_MAX_PIECES (COMPARE_MAX_PIECES) is set to 16 bytes when EFFICIENT_UNALIGNED_VSX is enabled, otherwise keeps unchanged. The macro STORE_MAX_PIECES is set to the same value as MOVE_MAX_PIECES by default, so now it's explicitly defined and keeps unchanged. gcc/ PR target/111449 * config/rs6000/altivec.md (cbranchv16qi4): New expand pattern. * config/rs6000/rs6000.cc (rs6000_generate_compare): Generate insn sequence for V16QImode equality compare. * config/rs6000/rs6000.h (MOVE_MAX_PIECES): Define. (STORE_MAX_PIECES): Define. gcc/testsuite/ PR target/111449 * gcc.target/powerpc/pr111449-1.c: New. * gcc.dg/tree-ssa/sra-17.c: Add additional options for 32-bit powerpc. * gcc.dg/tree-ssa/sra-18.c: Likewise. --- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by HaoChen Gui <guih...@gcc.gnu.org>: https://gcc.gnu.org/g:10615c8a10d6b61e813254924d76be728dbd4688 commit r14-5549-g10615c8a10d6b61e813254924d76be728dbd4688 Author: Haochen Gui <guih...@gcc.gnu.org> Date: Fri Nov 17 17:17:59 2023 +0800 rs6000: Fix regression cases caused 16-byte by pieces move The previous patch enables 16-byte by pieces move. Originally 16-byte move is implemented via pattern. expand_block_move does an optimization on P8 LE to leverage V2DI reversed load/store for memory to memory move. Now 16-byte move is implemented via by pieces move and finally split to two DI load/store. This patch creates an insn_and_split pattern to retake the optimization. gcc/ PR target/111449 * config/rs6000/vsx.md (*vsx_le_mem_to_mem_mov_ti): New. gcc/testsuite/ PR target/111449 * gcc.target/powerpc/pr111449-2.c: New.
