LGTM. Thanks.
juzhe.zh...@rivai.ai From: Li Xu Date: 2023-07-07 16:22 To: gcc-patches CC: kito.cheng; palmer; juzhe.zhong; zhengyu; Li Xu Subject: [PATCH] RISCV: Fix local_eliminate_vsetvl_insn bug in VSETVL PASS[PR110560] This patch fixes this issue happens on GCC-13. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110560 This patch should be backported to GCC-13. GCC-14 has rewritten this function, so there is no issue. PR target/110560 gcc/ChangeLog: * config/riscv/riscv-vsetvl.cc (local_eliminate_vsetvl_insn): Fix bug. --- gcc/config/riscv/riscv-vsetvl.cc | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc index 35403b5679c..3355ca4e3fb 100644 --- a/gcc/config/riscv/riscv-vsetvl.cc +++ b/gcc/config/riscv/riscv-vsetvl.cc @@ -1078,6 +1078,10 @@ local_eliminate_vsetvl_insn (const vector_insn_info &dem) if (has_vtype_op (i->rtl ())) { + if (!PREV_INSN (i->rtl ())) + return; + if (!NONJUMP_INSN_P (PREV_INSN (i->rtl ()))) + return; if (!vsetvl_discard_result_insn_p (PREV_INSN (i->rtl ()))) return; rtx avl = get_avl (i->rtl ()); -- 2.17.1
