Ping. On Sat, Jun 11, 2011 at 8:58 AM, H.J. Lu <hongjiu...@intel.com> wrote: > Hi, > > convert_memory_address_addr_space has a special PLUS/MULT case for > POINTERS_EXTEND_UNSIGNED < 0. It turns out that it is also needed > for all Pmode != ptr_mode cases. OK for trunk? > > Thanks. > > > H.J. > --- > 2011-06-11 H.J. Lu <hongjiu...@intel.com> > > PR middle-end/47727 > * explow.c (convert_memory_address_addr_space): Permute the > conversion and addition if one operand is a constant. > > diff --git a/gcc/explow.c b/gcc/explow.c > index 7387dad..b343bf8 100644 > --- a/gcc/explow.c > +++ b/gcc/explow.c > @@ -383,18 +383,13 @@ convert_memory_address_addr_space (enum machine_mode > to_mode ATTRIBUTE_UNUSED, > > case PLUS: > case MULT: > - /* For addition we can safely permute the conversion and addition > - operation if one operand is a constant and converting the constant > - does not change it or if one operand is a constant and we are > - using a ptr_extend instruction (POINTERS_EXTEND_UNSIGNED < 0). > - We can always safely permute them if we are making the address > - narrower. */ > + /* For addition we safely permute the conversion and addition > + operation if one operand is a constant since we can't generate > + new instructions. We can always safely permute them if we are > + making the address narrower. */ > if (GET_MODE_SIZE (to_mode) < GET_MODE_SIZE (from_mode) > || (GET_CODE (x) == PLUS > - && CONST_INT_P (XEXP (x, 1)) > - && (XEXP (x, 1) == convert_memory_address_addr_space > - (to_mode, XEXP (x, 1), as) > - || POINTERS_EXTEND_UNSIGNED < 0))) > + && CONST_INT_P (XEXP (x, 1)))) > return gen_rtx_fmt_ee (GET_CODE (x), to_mode, > convert_memory_address_addr_space > (to_mode, XEXP (x, 0), as), >
-- H.J.
