Thanks for fixing it. I am wonder could you add testcase into the patch? Or the testcase is too big and not appropriate to add.
juzhe.zh...@rivai.ai From: Li Xu Date: 2023-08-22 10:29 To: gcc-patches CC: kito.cheng; palmer; juzhe.zhong; xuli Subject: [PATCH] RISCV: Fix PR111074 [GCC13 BUG] From: xuli <xu...@eswincomputing.com> This patch fixes this issue happens on GCC-13. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111074 This patch should be backported to GCC-13. GCC-14 has rewritten propagate_avl function, so there is no issue. PR target/111074 gcc/ChangeLog: * config/riscv/riscv-vsetvl.cc (extract_single_source): Fix bug. --- gcc/config/riscv/riscv-vsetvl.cc | 3 +++ 1 file changed, 3 insertions(+) diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc index 789eb04b78d..bd45cb97e63 100644 --- a/gcc/config/riscv/riscv-vsetvl.cc +++ b/gcc/config/riscv/riscv-vsetvl.cc @@ -1183,6 +1183,9 @@ extract_single_source (set_info *set) return nullptr; hash_set<set_info *> sets = get_all_sets (set, true, false, true); + if (sets.is_empty ()) + return nullptr; + insn_info *first_insn = (*sets.begin ())->insn (); if (first_insn->is_artificial ()) return nullptr; -- 2.17.1
