https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112598
--- Comment #5 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:d13e59b86c5cbeec6135ada3f6dc983289cac610 commit r14-5748-gd13e59b86c5cbeec6135ada3f6dc983289cac610 Author: Juzhe-Zhong <juzhe.zh...@rivai.ai> Date: Wed Nov 22 11:27:52 2023 +0800 RISC-V: Fix permutation indice mode bug This patch fixes following FAILs on zvl512b: FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-1.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-1.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-16.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-16.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-17.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-17.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-3.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-3.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-5.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-5.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-6.c execution test FAIL: gcc.target/riscv/rvv/autovec/partial/slp_run-6.c execution test The root cause is that we are using vrgather.vv on vector QI mode which is incorrect for zvl512b since it exceed 256. Instead, we should use vrgatherei16.vv PR target/112598 gcc/ChangeLog: * config/riscv/riscv-v.cc (emit_vlmax_gather_insn): Adapt the priority. (shuffle_generic_patterns): Fix permutation indice bug. * config/riscv/vector-iterators.md: Fix VEI16 bug. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/autovec/pr112598-2.c: New test.