diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 41 |
1 files changed, 7 insertions, 34 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index e51abee..ee9ed7b 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -1418,44 +1418,17 @@ const_binop (enum tree_code code, tree arg1, tree arg2) int count = TYPE_VECTOR_SUBPARTS (type), i; tree *elts = XALLOCAVEC (tree, count); - if (code == VEC_RSHIFT_EXPR) + for (i = 0; i < count; i++) { - if (!tree_fits_uhwi_p (arg2)) - return NULL_TREE; + tree elem1 = VECTOR_CST_ELT (arg1, i); - unsigned HOST_WIDE_INT shiftc = tree_to_uhwi (arg2); - unsigned HOST_WIDE_INT outerc = tree_to_uhwi (TYPE_SIZE (type)); - unsigned HOST_WIDE_INT innerc - = tree_to_uhwi (TYPE_SIZE (TREE_TYPE (type))); - if (shiftc >= outerc || (shiftc % innerc) != 0) + elts[i] = const_binop (code, elem1, arg2); + + /* It is possible that const_binop cannot handle the given + code and return NULL_TREE. */ + if (elts[i] == NULL_TREE) return NULL_TREE; - int offset = shiftc / innerc; - /* The direction of VEC_RSHIFT_EXPR is endian dependent. - For reductions, if !BYTES_BIG_ENDIAN then compiler picks first - vector element, but last element if BYTES_BIG_ENDIAN. */ - if (BYTES_BIG_ENDIAN) - offset = -offset; - tree zero = build_zero_cst (TREE_TYPE (type)); - for (i = 0; i < count; i++) - { - if (i + offset < 0 || i + offset >= count) - elts[i] = zero; - else - elts[i] = VECTOR_CST_ELT (arg1, i + offset); - } } - else - for (i = 0; i < count; i++) - { - tree elem1 = VECTOR_CST_ELT (arg1, i); - - elts[i] = const_binop (code, elem1, arg2); - - /* It is possible that const_binop cannot handle the given - code and return NULL_TREE */ - if (elts[i] == NULL_TREE) - return NULL_TREE; - } return build_vector (type, elts); } |