https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100711
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Roger Sayle <sa...@gcc.gnu.org>: https://gcc.gnu.org/g:c39d77f252e895306ef88c1efb3eff04e4232554 commit r12-5595-gc39d77f252e895306ef88c1efb3eff04e4232554 Author: Roger Sayle <ro...@nextmovesoftware.com> Date: Tue Nov 30 08:35:39 2021 +0000 x86_64: PR target/100711: Splitters for pandn This patch addresses PR target/100711 by introducing define_split patterns so that not/broadcast/pand may be simplified (by combine) to broadcast/pandn. This introduces two splitters one for optimizing pandn on TARGET_SSE for V4SI and V2DI, and another for vpandn on TARGET_AVX2 for V16QI, V8HI, V32QI, V16HI and V8SI. Each splitter has its own new testcase. I've also confirmed that not/broadcast/pandn is already getting simplified to broadcast/pand by the middle-end optimizers. 2021-11-30 Roger Sayle <ro...@nextmovesoftware.com> Uroš Bizjak <ubiz...@gmail.com> gcc/ChangeLog PR target/100711 * config/i386/sse.md (define_split): New splitters to simplify not;vec_duplicate;and as vec_duplicate;andn. gcc/testsuite/ChangeLog PR target/100711 * gcc.target/i386/pr100711-1.c: New test case. * gcc.target/i386/pr100711-2.c: New test case.
