diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/expr.c b/gcc/expr.c index 81c92190bca..e9cabbe412d 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -9051,7 +9051,17 @@ expand_expr_real_2 (sepops ops, rtx target, enum machine_mode tmode, { op0 = expand_normal (treeop0); this_optab = optab_for_tree_code (code, type, optab_default); - temp = expand_unop (mode, this_optab, op0, target, unsignedp); + enum machine_mode vec_mode = TYPE_MODE (TREE_TYPE (treeop0)); + temp = expand_unop (vec_mode, this_optab, op0, NULL_RTX, unsignedp); + gcc_assert (temp); + /* The tree code produces a scalar result, but (somewhat by convention) + the optab produces a vector with the result in element 0 if + little-endian, or element N-1 if big-endian. So pull the scalar + result out of that element. */ + int index = BYTES_BIG_ENDIAN ? GET_MODE_NUNITS (vec_mode) - 1 : 0; + int bitsize = GET_MODE_BITSIZE (GET_MODE_INNER (vec_mode)); + temp = extract_bit_field (temp, bitsize, bitsize * index, unsignedp, + target, mode, mode); gcc_assert (temp); return temp; } |