https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110897
--- Comment #17 from JuzheZhong <juzhe.zhong at rivai dot ai> --- Confirm by this try: https://godbolt.org/z/q7zx5zG5e Both ARM SVE trunk GCC and RISC-V GCC failed to vectorize simple unsigned short shift right, with following failed information: <source>:14:1: missed: couldn't vectorize loop <source>:14:1: missed: not vectorized: relevant stmt not supported: patt_47 = MIN_EXPR <_7, 15>; Compiler returned: 0 This following code can fix it: index 2cedf2384..cda27fed9 100644 --- a/riscv-gcc/gcc/tree-vect-patterns.cc +++ b/riscv-gcc/gcc/tree-vect-patterns.cc @@ -3133,7 +3133,8 @@ vect_recog_over_widening_pattern (vec_info *vinfo, return NULL; } else - append_pattern_def_seq (vinfo, last_stmt_info, pattern_stmt); + append_pattern_def_seq (vinfo, last_stmt_info, pattern_stmt, + op_vectype); ops[1] = new_var; } } Bootstrap and Regression in progress, Ok for trunk ?
