diff options
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 0bba878..a9246fa 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -4278,7 +4278,7 @@ nonzero_bits1 (const_rtx x, machine_mode mode, const_rtx known_x, switch (code) { case REG: -#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend) +#if defined(POINTERS_EXTEND_UNSIGNED) /* If pointers extend unsigned and this is a pointer in Pmode, say that all the bits above ptr_mode are known to be zero. */ /* As we do not know which address space the pointer is referring to, @@ -4286,7 +4286,8 @@ nonzero_bits1 (const_rtx x, machine_mode mode, const_rtx known_x, or address modes depending on the address space. */ if (target_default_pointer_address_modes_p () && POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode - && REG_POINTER (x)) + && REG_POINTER (x) + && !targetm.have_ptr_extend ()) nonzero &= GET_MODE_MASK (ptr_mode); #endif @@ -4785,7 +4786,7 @@ num_sign_bit_copies1 (const_rtx x, machine_mode mode, const_rtx known_x, { case REG: -#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend) +#if defined(POINTERS_EXTEND_UNSIGNED) /* 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. */ /* As we do not know which address space the pointer is referring to, @@ -4793,7 +4794,8 @@ num_sign_bit_copies1 (const_rtx x, machine_mode mode, const_rtx known_x, or address modes depending on the address space. */ if (target_default_pointer_address_modes_p () && ! POINTERS_EXTEND_UNSIGNED && GET_MODE (x) == Pmode - && mode == Pmode && REG_POINTER (x)) + && mode == Pmode && REG_POINTER (x) + && !targetm.have_ptr_extend ()) return GET_MODE_PRECISION (Pmode) - GET_MODE_PRECISION (ptr_mode) + 1; #endif |