diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index b22dd9b..8658aad 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7905,7 +7905,7 @@ nonzero_bits (x, mode) switch (code) { case REG: -#ifdef POINTERS_EXTEND_UNSIGNED +#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend) /* If pointers extend unsigned and this is a pointer in Pmode, say that all the bits above ptr_mode are known to be zero. */ if (POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode @@ -8182,7 +8182,7 @@ nonzero_bits (x, mode) /* If pointers extend unsigned and this is an addition or subtraction to a pointer in Pmode, all the bits above ptr_mode are known to be zero. */ - if (POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode + if (POINTERS_EXTEND_UNSIGNED > 0 && GET_MODE (x) == Pmode && (code == PLUS || code == MINUS) && GET_CODE (XEXP (x, 0)) == REG && REG_POINTER (XEXP (x, 0))) nonzero &= GET_MODE_MASK (ptr_mode); @@ -8363,7 +8363,7 @@ num_sign_bit_copies (x, mode) { case REG: -#ifdef POINTERS_EXTEND_UNSIGNED +#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend) /* If pointers extend signed and this is a pointer in Pmode, say that all the bits above ptr_mode are known to be sign bit copies. */ if (! POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode && mode == Pmode |