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* regclass.c (record_reg_classes): Correctly handle 'p' constraint.

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From-SVN: r25295
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David Edelsohn 1999-02-18 19:49:19 +00:00 committed by Jeff Law
parent 1b4a979b01
commit 94e6f78366
2 changed files with 14 additions and 2 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Thu Feb 18 20:44:21 1999 David Edelsohn <edelsohn@mhpcc.edu>
* regclass.c (record_reg_classes): Correctly handle 'p' constraint.
Thu Feb 18 19:59:37 1999 Marc Espie <espie@cvs.openbsd.org>
* configure.in :Handle OpenBSD platforms.

12
gcc/regclass.c
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@ -1159,6 +1159,7 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
const char *p = constraints[i];
rtx op = ops[i];
enum machine_mode mode = modes[i];
int allows_addr = 0;
int allows_mem = 0;
int win = 0;
unsigned char c;
@ -1262,7 +1263,11 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
case '!': case '#': case '&':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
break;
case 'p':
allows_addr = 1;
win = address_operand (op, GET_MODE (op));
break;
case 'm': case 'o': case 'V':
@ -1393,7 +1398,10 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
if (GET_CODE (op) == REG && REGNO (op) >= FIRST_PSEUDO_REGISTER)
{
if (classes[i] == NO_REGS)
alt_fail = 1;
{
if (! allows_addr)
alt_fail = 1;
}
else
{
struct costs *pp = &this_op_costs[i];
@ -1443,7 +1451,7 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
/* The only other way this alternative can be used is if this is a
constant that could be placed into memory. */
else if (CONSTANT_P (op) && allows_mem)
else if (CONSTANT_P (op) && (allows_addr || allows_mem))
alt_cost += MEMORY_MOVE_COST (mode, classes[i], 1);
else
alt_fail = 1;