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(record_reg_classes): There is no alt_cost

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for a pair of matching args if they are the same pseudo reg.

From-SVN: r5597
This commit is contained in:
Richard Stallman 1993-10-05 03:07:03 +00:00
parent 69249c1b8e
commit a8683de70b
1 changed files with 4 additions and 2 deletions
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6
gcc/regclass.c
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@ -998,8 +998,10 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
instruction. */
this_op_costs[i] = this_op_costs[j];
if (! find_reg_note (insn, REG_DEAD, op))
alt_cost += 2;
if (! (GET_CODE (op) == REG && rtx_equal_p (op, ops[j])))
/* No cost if both are the same pseudo reg. */
if (! find_reg_note (insn, REG_DEAD, op))
alt_cost += 2;
/* This is in place of ordinary cost computation
for this operand, so skip to the end of the