diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index bfe9e07..cbd3445 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -12409,6 +12409,12 @@ fold_binary_loc (location_t loc, if (integer_zerop (arg0)) return omit_one_operand_loc (loc, type, arg0, arg1); + /* Prefer vector1 << scalar to vector1 << vector2 + if vector2 is uniform. */ + if (VECTOR_TYPE_P (TREE_TYPE (arg1)) + && (tem = uniform_vector_p (arg1)) != NULL_TREE) + return fold_build2_loc (loc, code, type, op0, tem); + /* Since negative shift count is not well-defined, don't try to compute it in the compiler. */ if (TREE_CODE (arg1) == INTEGER_CST && tree_int_cst_sgn (arg1) < 0) |