+
+ // If this MDValue was previously function-local but no longer is, clear
+ // its function-local flag.
+ if (isFunctionLocal() && !isFunctionLocalValue(To)) {
+ bool isStillFunctionLocal = false;
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
+ Value *V = getOperand(i);
+ if (!V) continue;
+ if (isFunctionLocalValue(V)) {
+ isStillFunctionLocal = true;
+ break;
+ }
+ }
+ if (!isStillFunctionLocal)
+ setValueSubclassData(getSubclassDataFromValue() & ~FunctionLocalBit);
+ }