https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111232
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Lehua Ding <lh...@gcc.gnu.org>: https://gcc.gnu.org/g:9ee40b9a7bee83394fc7ba6fef71cb76d91b49c8 commit r14-3735-g9ee40b9a7bee83394fc7ba6fef71cb76d91b49c8 Author: Lehua Ding <lehua.d...@rivai.ai> Date: Mon Sep 4 17:15:08 2023 +0800 RISC-V: Keep vlmax vector operators in simple form until split1 pass This patch keep vlmax vector pattern in simple before split1 pass which will allow more optimization (e.g. combine) before split1 pass. This patch changes the vlmax pattern in autovec.md to define_insn_and_split as much as possible and clean up some combine patterns that are no longer needed. This patch also fixed PR111232 bug which was caused by a combined failed. PR target/111232 gcc/ChangeLog: * config/riscv/autovec-opt.md (@pred_single_widen_mul<any_extend:su><mode>): Delete. (*pred_widen_mulsu<mode>): Delete. (*pred_single_widen_mul<mode>): Delete. (*dual_widen_<any_widen_binop:optab><any_extend:su><mode>): Add new combine patterns. (*single_widen_sub<any_extend:su><mode>): Ditto. (*single_widen_add<any_extend:su><mode>): Ditto. (*single_widen_mult<any_extend:su><mode>): Ditto. (*dual_widen_mulsu<mode>): Ditto. (*dual_widen_mulus<mode>): Ditto. (*dual_widen_<optab><mode>): Ditto. (*single_widen_add<mode>): Ditto. (*single_widen_sub<mode>): Ditto. (*single_widen_mult<mode>): Ditto. * config/riscv/autovec.md (<optab><mode>3): Change define_expand to define_insn_and_split. (<optab><mode>2): Ditto. (abs<mode>2): Ditto. (smul<mode>3_highpart): Ditto. (umul<mode>3_highpart): Ditto. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/autovec/widen/widen-4.c: Add more testcases. * gcc.target/riscv/rvv/autovec/widen/widen-complicate-4.c: Ditto. * gcc.target/riscv/rvv/autovec/pr111232.c: New test.
