Committed, thanks all.
-------------- Li Xu >The test case is too complicated and I can't simplify it, so no test case is >added. > >-------------- >Li Xu >>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
