diff options
Diffstat (limited to 'gcc/recog.c')
| -rw-r--r-- | gcc/recog.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/recog.c b/gcc/recog.c index 529baa1b5c3..babe04139de 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -1970,8 +1970,17 @@ offsettable_address_p (int strictp, enum machine_mode mode, rtx y) because the amount of the increment depends on the mode. */ int -mode_dependent_address_p (rtx addr ATTRIBUTE_UNUSED /* Maybe used in GO_IF_MODE_DEPENDENT_ADDRESS. */) -{ +mode_dependent_address_p (rtx addr) +{ + /* Auto-increment addressing with anything other than post_modify + or pre_modify always introduces a mode dependency. Catch such + cases now instead of deferring to the target. */ + if (GET_CODE (addr) == PRE_INC + || GET_CODE (addr) == POST_INC + || GET_CODE (addr) == PRE_DEC + || GET_CODE (addr) == POST_DEC) + return 1; + GO_IF_MODE_DEPENDENT_ADDRESS (addr, win); return 0; /* Label `win' might (not) be used via GO_IF_MODE_DEPENDENT_ADDRESS. */ |