Rename tryEmitConstantHeapMetadataRef for consistency. NFC.

Author: rjmccall

lib/IRGen/GenCast.cpp

@@ -103,7 +103,7 @@ FailableCastResult irgen::emitClassIdenticalCast(IRGenFunction &IGF,
   // TODO: use ObjC class references
   llvm::Value *targetMetadata;
   if (allowConservative &&
-      (targetMetadata = tryEmitConstantHeapMetadataRef(IGF.IGM,
+      (targetMetadata = tryEmitConstantTypeMetadataRef(IGF.IGM,
                                           toType.getSwiftRValueType()))) {
     // ok
   } else {

lib/IRGen/GenClass.cpp

@@ -986,7 +986,7 @@ namespace {
         fields.push_back(IGM.getAddrOfObjCClass(getClass(), NotForDefinition));
       else {
         auto type = getSelfType(getClass()).getSwiftRValueType();
-        llvm::Constant *metadata = tryEmitConstantHeapMetadataRef(IGM, type);
+        llvm::Constant *metadata = tryEmitConstantTypeMetadataRef(IGM, type);
         assert(metadata &&
                "extended objc class doesn't have constant metadata?");
         fields.push_back(metadata);

lib/IRGen/GenDecl.cpp

@@ -106,7 +106,7 @@ class CategoryInitializerVisitor
     class_addProtocol = IGM.getClassAddProtocolFn();
 
     CanType origTy = ext->getDeclaredTypeOfContext()->getCanonicalType();
-    classMetadata = tryEmitConstantHeapMetadataRef(IGM, origTy);
+    classMetadata = tryEmitConstantTypeMetadataRef(IGM, origTy);
     assert(classMetadata &&
            "extended objc class doesn't have constant metadata?!");
     classMetadata = llvm::ConstantExpr::getBitCast(classMetadata,

lib/IRGen/GenMeta.cpp

@@ -206,7 +206,7 @@ static bool hasMetadataPattern(IRGenModule &IGM, NominalTypeDecl *theDecl) {
 
 /// Attempts to return a constant heap metadata reference for a
 /// nominal type.
-llvm::Constant *irgen::tryEmitConstantHeapMetadataRef(IRGenModule &IGM,
+llvm::Constant *irgen::tryEmitConstantTypeMetadataRef(IRGenModule &IGM,
                                                       CanType type) {
   auto theDecl = type->getAnyNominal();
   assert(theDecl && "emitting constant metadata ref for non-nominal type?");
@@ -3029,7 +3029,7 @@ namespace {
 
     bool addReferenceToType(CanType type) {
       if (llvm::Constant *metadata
-            = tryEmitConstantHeapMetadataRef(IGM, type)) {
+            = tryEmitConstantTypeMetadataRef(IGM, type)) {
         addWord(metadata);
         return true;
       } else {

lib/IRGen/GenMeta.h

@@ -76,7 +76,7 @@ namespace irgen {
   /// Emit a reference to a compile-time constant piece of type metadata, or
   /// return a null pointer if the type's metadata cannot be represented by a
   /// constant.
-  llvm::Constant *tryEmitConstantHeapMetadataRef(IRGenModule &IGM,
+  llvm::Constant *tryEmitConstantTypeMetadataRef(IRGenModule &IGM,
                                                  CanType type);
 
   enum class MetadataValueType { ObjCClass, TypeMetadata };