[LVI] Require UndefAllowed argument to getConstantRangeAtUse() (NFC)

For the remaining uses set it to true, matching the current
behavior.

Author: nikic

llvm/include/llvm/Analysis/LazyValueInfo.h

@@ -99,7 +99,7 @@ namespace llvm {
 
     /// Return the ConstantRange constraint that is known to hold for the value
     /// at a specific use-site.
-    ConstantRange getConstantRangeAtUse(const Use &U, bool UndefAllowed = true);
+    ConstantRange getConstantRangeAtUse(const Use &U, bool UndefAllowed);
 
     /// Determine whether the specified value is known to be a
     /// constant on the specified edge.  Return null if not.

llvm/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp

@@ -278,8 +278,10 @@ static bool processICmp(ICmpInst *Cmp, LazyValueInfo *LVI) {
   ICmpInst::Predicate UnsignedPred =
       ConstantRange::getEquivalentPredWithFlippedSignedness(
           Cmp->getPredicate(),
-          LVI->getConstantRangeAtUse(Cmp->getOperandUse(0)),
-          LVI->getConstantRangeAtUse(Cmp->getOperandUse(1)));
+          LVI->getConstantRangeAtUse(Cmp->getOperandUse(0),
+                                     /*UndefAllowed*/ true),
+          LVI->getConstantRangeAtUse(Cmp->getOperandUse(1),
+                                     /*UndefAllowed*/ true));
 
   if (UnsignedPred == ICmpInst::Predicate::BAD_ICMP_PREDICATE)
     return false;