diff options
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 9843d06..a84d894 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -849,6 +849,12 @@ find_base_value (src) case ZERO_EXTEND: case SIGN_EXTEND: /* used for NT/Alpha pointers */ case HIGH: + case PRE_INC: + case PRE_DEC: + case POST_INC: + case POST_DEC: + case PRE_MODIFY: + case POST_MODIFY: return find_base_value (XEXP (src, 0)); default: @@ -1220,6 +1226,10 @@ find_base_term (x) case REG: return REG_BASE_VALUE (x); + case TRUNCATE: + if (GET_MODE_SIZE (GET_MODE (x)) < GET_MODE_SIZE (Pmode)) + return 0; + /* Fall through. */ case ZERO_EXTEND: case SIGN_EXTEND: /* Used for Alpha/NT pointers */ case HIGH: @@ -1227,6 +1237,8 @@ find_base_term (x) case PRE_DEC: case POST_INC: case POST_DEC: + case PRE_MODIFY: + case POST_MODIFY: return find_base_term (XEXP (x, 0)); case VALUE: @@ -1300,8 +1312,8 @@ find_base_term (x) } case AND: - if (GET_CODE (XEXP (x, 0)) == REG && GET_CODE (XEXP (x, 1)) == CONST_INT) - return REG_BASE_VALUE (XEXP (x, 0)); + if (GET_CODE (XEXP (x, 1)) == CONST_INT && INTVAL (XEXP (x, 1)) != 0) + return find_base_term (XEXP (x, 0)); return 0; case SYMBOL_REF: |