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(record_reg_classes): Ignore leading % when examining constraint.

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Don't bypass usual cost computation when a pseudo "matches"
a non-pseudo in matching operands.

From-SVN: r2123
This commit is contained in:
Richard Stallman 1992-09-15 04:47:08 +00:00
parent 69c3f3434a
commit 347099d6ef
1 changed files with 7 additions and 2 deletions
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9
gcc/regclass.c
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@ -910,6 +910,9 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
continue;
}
if (*p == '%')
p++;
/* If this alternative is only relevant when this operand
matches a previous operand, we do different things depending
on whether this operand is a pseudo-reg or not. */
@ -967,9 +970,11 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
this_op_costs[i] = this_op_costs[j];
if (! find_reg_note (insn, REG_DEAD, op))
alt_cost += 2;
}
continue;
/* This is in place of ordinary cost computation
for this operand. */
continue;
}
}
/* Scan all the constraint letters. See if the operand matches