diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386-expand.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c index 0fa8d45..9f3d419 100644 --- a/gcc/config/i386/i386-expand.c +++ b/gcc/config/i386/i386-expand.c @@ -154,9 +154,13 @@ split_double_mode (machine_mode mode, rtx operands[], lo_half[num] = simplify_gen_subreg (half_mode, op, GET_MODE (op) == VOIDmode ? mode : GET_MODE (op), 0); - hi_half[num] = simplify_gen_subreg (half_mode, op, - GET_MODE (op) == VOIDmode - ? mode : GET_MODE (op), byte); + + rtx tmp = simplify_gen_subreg (half_mode, op, + GET_MODE (op) == VOIDmode + ? mode : GET_MODE (op), byte); + /* simplify_gen_subreg will return NULL RTX for the + high half of the paradoxical subreg. */ + hi_half[num] = tmp ? tmp : gen_reg_rtx (half_mode); } } } |