Inline isUint32() method from HConstant, which was only used in one place.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 0aabfbc43229198f181ec9f76d4aaf4724228f4f..cb50de6d984bf5cc49a4546373b835e27b4a3d47 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -648,6 +648,11 @@ int32_t HValue::GetInteger32Constant() {
 }
 
 
+bool HValue::EqualsInteger32Constant(int32_t value) {
+  return IsInteger32Constant() && GetInteger32Constant() == value;
+}
+
+
 void HValue::SetOperandAt(int index, HValue* value) {
   RegisterUse(index, value);
   InternalSetOperandAt(index, value);
@@ -1393,15 +1398,11 @@ HValue* HBitwise::Canonicalize() {
   if (!representation().IsInteger32()) return this;
   // If x is an int32, then x & -1 == x, x | 0 == x and x ^ 0 == x.
   int32_t nop_constant = (op() == Token::BIT_AND) ? -1 : 0;
-  if (left()->IsConstant() &&
-      HConstant::cast(left())->HasInteger32Value() &&
-      HConstant::cast(left())->Integer32Value() == nop_constant &&
+  if (left()->EqualsInteger32Constant(nop_constant) &&
       !right()->CheckFlag(kUint32)) {
     return right();
   }
-  if (right()->IsConstant() &&
-      HConstant::cast(right())->HasInteger32Value() &&
-      HConstant::cast(right())->Integer32Value() == nop_constant &&
+  if (right()->EqualsInteger32Constant(nop_constant) &&
       !left()->CheckFlag(kUint32)) {
     return left();
   }
@@ -1439,8 +1440,7 @@ HValue* HSub::Canonicalize() {
 // TODO(svenpanne) Use this in other Canonicalize() functions.
 static bool IsIdentityOperation(HValue* arg1, HValue* arg2, int32_t identity) {
   return arg1->representation().IsSpecialization() &&
-      arg2->IsInteger32Constant() &&
-      arg2->GetInteger32Constant() == identity;
+    arg2->EqualsInteger32Constant(identity);
 }