https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111412
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Li Xu <x...@gcc.gnu.org>: https://gcc.gnu.org/g:10c7edcc65d4bf1d05a9f0791e77e7b953e3e796 commit r13-7822-g10c7edcc65d4bf1d05a9f0791e77e7b953e3e796 Author: xuli <xu...@eswincomputing.com> Date: Mon Sep 18 04:02:52 2023 +0000 RISC-V: Remove phase 6 of vsetvl pass in GCC13[PR111412] vsetvl pass has been refactored in gcc14, and the optimization is more reasonable than releases/gcc-13. This problem does not exist in gcc14. Phase 6 of gcc13 is an optimization patch. Due to lack of consideration, there will be some hidden bugs, so we decided to remove phase 6. Although the generated code will be redundant, the program is correct. PR target/111412 gcc/ChangeLog: * config/riscv/riscv-vsetvl.cc (vector_infos_manager::release): Remove. (pass_vsetvl::refine_vsetvls): Ditto. (pass_vsetvl::cleanup_vsetvls): Ditto. (pass_vsetvl::propagate_avl): Ditto. (pass_vsetvl::lazy_vsetvl): Ditto. * config/riscv/riscv-vsetvl.h: Ditto. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/vsetvl/avl_single-79.c: Adjust case. * gcc.target/riscv/rvv/vsetvl/avl_single-80.c: Ditto. * gcc.target/riscv/rvv/vsetvl/avl_single-86.c: Ditto. * gcc.target/riscv/rvv/vsetvl/avl_single-87.c: Ditto. * gcc.target/riscv/rvv/vsetvl/avl_single-88.c: Ditto. * gcc.target/riscv/rvv/vsetvl/avl_single-89.c: Ditto. * gcc.target/riscv/rvv/vsetvl/avl_single-90.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vlmax_back_prop-25.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vlmax_back_prop-26.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vlmax_switch_vtype-14.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vlmax_switch_vtype-15.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvl-1.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvl-5.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvl-6.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvl-7.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvl-8.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvlmax-2.c: Ditto. * gcc.target/riscv/rvv/vsetvl/vsetvlmax-4.c: Ditto. * gcc.target/riscv/rvv/base/pr111412.c: New test.
