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(record_reg_class): For matching operands...

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(record_reg_class): For matching operands, handle
case where the earlier one is not a pseudo like the case
where the later one is not a pseudo.

From-SVN: r2067
This commit is contained in:
Richard Stallman 1992-09-07 05:56:52 +00:00
parent 21d12b804d
commit 07d8ca2d92
1 changed files with 17 additions and 0 deletions
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17
gcc/regclass.c
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@ -939,7 +939,24 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
else
alt_cost += copy_cost (op, mode, classes[j], 1);
}
else if (GET_CODE (ops[j]) != REG
|| REGNO (ops[j]) < FIRST_PSEUDO_REGISTER)
{
/* This op is a pseudo but the one it matches is not. */
/* If we can't put the other operand into a register, this
alternative can't be used. */
if (classes[j] == NO_REGS)
alt_fail = 1;
/* Otherwise, add to the cost of this alternative the cost
to copy the other operand to the register used for this
operand. */
else
alt_cost += copy_cost (ops[j], mode, classes[j], 1);
}
else
{
/* The costs of this operand are the same as that of the