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Improve message for wrong number of alternatives.

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gcc/
	* genoutput.c (validate_insn_alternatives) Make "wrong number of
	alternatives" message more specific, and remove assumption on where
	the problem is.
This commit is contained in:
Joern Rennecke 2021-05-17 13:44:49 +01:00
parent 7606865198
commit bdd8e3dd60
1 changed files with 14 additions and 2 deletions
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16
gcc/genoutput.c
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@ -757,6 +757,7 @@ validate_insn_alternatives (class data *d)
int which_alternative = 0;
int alternative_count_unsure = 0;
bool seen_write = false;
bool alt_mismatch = false;
for (p = d->operand[start].constraint; (c = *p); p += len)
{
@ -813,8 +814,19 @@ validate_insn_alternatives (class data *d)
if (n == 0)
n = d->operand[start].n_alternatives;
else if (n != d->operand[start].n_alternatives)
error_at (d->loc, "wrong number of alternatives in operand %d",
start);
{
if (!alt_mismatch)
{
alt_mismatch = true;
error_at (d->loc,
"alternative number mismatch: "
"operand %d has %d, operand %d has %d",
0, n, start, d->operand[start].n_alternatives);
}
else
error_at (d->loc, "operand %d has %d alternatives",
start, d->operand[start].n_alternatives);
}
}
}