nv50/ra: let simplify return an error and handle that

fixes a crash in the case simplify reports an error

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Karol Herbst 2016-10-03 18:55:09 +02:00 committed by Samuel Pitoiset
parent f315c4f189
commit d8bcd3ef37

View file

@ -771,7 +771,7 @@ private:
bool coalesce(ArrayList&);
bool doCoalesce(ArrayList&, unsigned int mask);
void calculateSpillWeights();
void simplify();
bool simplify();
bool selectRegisters();
void cleanup(const bool success);
@ -1305,7 +1305,7 @@ GCRA::simplifyNode(RIG_Node *node)
(node->degree < node->degreeLimit) ? "" : "(spill)");
}
void
bool
GCRA::simplify()
{
for (;;) {
@ -1330,11 +1330,11 @@ GCRA::simplify()
}
if (isinf(bestScore)) {
ERROR("no viable spill candidates left\n");
break;
return false;
}
simplifyNode(best);
} else {
break;
return true;
}
}
}
@ -1493,7 +1493,9 @@ GCRA::allocateRegisters(ArrayList& insns)
buildRIG(insns);
calculateSpillWeights();
simplify();
ret = simplify();
if (!ret)
goto out;
ret = selectRegisters();
if (!ret) {