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(convert_memory_address): No longer static. 

New arg, TO_MODE.
Do something special for SYMBOL_REF, LABEL_REF, and CONST.
(memory_address): Add extra arg to call to convert_memory_address.

From-SVN: r9328
This commit is contained in:
Richard Kenner 1995-04-07 12:35:25 -04:00
parent 0aac88f627
commit 498b529f11
1 changed files with 28 additions and 14 deletions
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42
gcc/explow.c
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@ -30,7 +30,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "insn-codes.h"
static rtx break_out_memory_refs PROTO((rtx));
static rtx convert_memory_address PROTO((rtx));
/* Return an rtx for the sum of X and the integer C.
@ -294,31 +293,46 @@ break_out_memory_refs (x)
#ifdef POINTERS_EXTEND_UNSIGNED
/* Given X, a memory address in ptr_mode, convert it to an address
in Pmode. We take advantage of the fact that pointers are not
allowed to overflow by commuting arithmetic operations over
conversions so that address arithmetic insns can be used. */
in Pmode, or vice versa (TO_MODE says which way). We take advantage of
the fact that pointers are not allowed to overflow by commuting arithmetic
operations over conversions so that address arithmetic insns can be
used. */
static rtx
convert_memory_address (x)
rtx
convert_memory_address (to_mode, x)
enum machine_mode to_mode;
rtx x;
{
rtx temp;
switch (GET_CODE (x))
{
case CONST_INT:
case CONST_DOUBLE:
case LABEL_REF:
case SYMBOL_REF:
case CONST:
return x;
case LABEL_REF:
return gen_rtx (LABEL_REF, to_mode, XEXP (x, 0));
case SYMBOL_REF:
temp = gen_rtx (SYMBOL_REF, to_mode, XSTR (x, 0));
SYMBOL_REF_FLAG (temp) = SYMBOL_REF_FLAG (x);
return temp;
case PLUS:
case MULT:
return gen_rtx (GET_CODE (x), Pmode,
convert_memory_address (XEXP (x, 0)),
convert_memory_address (XEXP (x, 1)));
return gen_rtx (GET_CODE (x), to_mode,
convert_memory_address (to_mode, XEXP (x, 0)),
convert_memory_address (to_mode, XEXP (x, 1)));
case CONST:
return gen_rtx (CONST, to_mode,
convert_memory_address (to_mode, XEXP (x, 0)));
default:
return convert_modes (Pmode, ptr_mode, x, POINTERS_EXTEND_UNSIGNED);
return convert_modes (to_mode,
to_mode == ptr_mode ? Pmode : ptr_mode,
x, POINTERS_EXTEND_UNSIGNED);
}
}
#endif
@ -375,7 +389,7 @@ memory_address (mode, x)
#ifdef POINTERS_EXTEND_UNSIGNED
if (GET_MODE (x) == ptr_mode)
x = convert_memory_address (x);
x = convert_memory_address (Pmode, x);
#endif
/* By passing constant addresses thru registers