diff options
| -rw-r--r-- | gcc/combine.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 48e5a87..2bb00d4 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -4334,6 +4334,14 @@ simplify_set (x) && (GET_MODE_SIZE (GET_MODE (src)) < GET_MODE_SIZE (GET_MODE (SUBREG_REG (src)))) #endif +#ifdef CLASS_CANNOT_CHANGE_SIZE + && ! (GET_CODE (dest) == REG && REGNO (dest) < FIRST_PSEUDO_REGISTER + && (TEST_HARD_REG_BIT + (reg_class_contents[(int) CLASS_CANNOT_CHANGE_SIZE], + REGNO (dest))) + && (GET_MODE_SIZE (GET_MODE (src)) + != GET_MODE_SIZE (GET_MODE (SUBREG_REG (src))))) +#endif && (GET_CODE (dest) == REG || (GET_CODE (dest) == SUBREG && GET_CODE (SUBREG_REG (dest)) == REG))) |