diff options
Diffstat (limited to 'gcc/final.c')
| -rw-r--r-- | gcc/final.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/final.c b/gcc/final.c index 37dc89dc6a4..2647bbe08f5 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -2902,9 +2902,15 @@ alter_subreg (x) register rtx x; { register rtx y = SUBREG_REG (x); + if (GET_CODE (y) == SUBREG) y = alter_subreg (y); + /* If reload is operating, we may be replacing inside this SUBREG. + Check for that and make a new one if so. */ + if (reload_in_progress && find_replacement (&SUBREG_REG (x)) != 0) + x = copy_rtx (x); + if (GET_CODE (y) == REG) { /* If the word size is larger than the size of this register, |