[NFC] rename MD_unique_id to MD_guid for consistency

llvm/include/llvm/IR/FixedMetadataKinds.def

@@ -62,7 +62,7 @@ LLVM_FIXED_MD_KIND(MD_nofpclass, "nofpclass", 47)
 LLVM_FIXED_MD_KIND(MD_call_target, "call_target", 48)
 LLVM_FIXED_MD_KIND(MD_inline_history, "inline_history", 49)
 LLVM_FIXED_MD_KIND(MD_elf_section_properties, "elf_section_properties", 50)
-LLVM_FIXED_MD_KIND(MD_unique_id, "guid", 51)
+LLVM_FIXED_MD_KIND(MD_guid, "guid", 51)
 LLVM_FIXED_MD_KIND(MD_mem_cache_hint, "mem.cache_hint", 52)
 LLVM_FIXED_MD_KIND(MD_block_uniformity_profile, "block.uniformity.profile", 53)
 LLVM_FIXED_MD_KIND(MD_callgraph, "callgraph", 54)

llvm/lib/IR/Globals.cpp

@@ -88,15 +88,15 @@ void GlobalValue::assignGUID() {
   const GUID G =
       GlobalValue::getGUIDAssumingExternalLinkage(getGlobalIdentifier());
   setMetadata(
-      LLVMContext::MD_unique_id,
+      LLVMContext::MD_guid,
       MDNode::get(getContext(), {ConstantAsMetadata::get(ConstantInt::get(
                                     Type::getInt64Ty(getContext()), G))}));
 }
 
 void GlobalValue::reassignGUID() {
   if (!getGUIDMetadata())
     return;
-  eraseMetadata(LLVMContext::MD_unique_id);
+  eraseMetadata(LLVMContext::MD_guid);
   assignGUID();
 }
 
@@ -139,7 +139,7 @@ std::optional<GlobalValue::GUID> GlobalValue::getGUIDIfAssigned() const {
 
 MDNode *GlobalValue::getGUIDMetadata() const {
   if (auto *GO = dyn_cast<GlobalObject>(this))
-    return GO->getMetadata(LLVMContext::MD_unique_id);
+    return GO->getMetadata(LLVMContext::MD_guid);
   return nullptr;
 }
 
@@ -472,7 +472,7 @@ bool GlobalObject::hasMetadataOtherThanDebugLocAndGuid() const {
   SmallVector<std::pair<unsigned, MDNode *>, 4> MDs;
   getAllMetadata(MDs);
   for (const auto &V : MDs)
-    if (V.first != LLVMContext::MD_dbg && V.first != LLVMContext::MD_unique_id)
+    if (V.first != LLVMContext::MD_dbg && V.first != LLVMContext::MD_guid)
       return true;
   return false;
 }

llvm/lib/Transforms/IPO/FunctionImport.cpp

@@ -1671,20 +1671,20 @@ bool llvm::convertToDeclaration(GlobalValue &GV) {
                     << "\n");
   MDNode *UniqueID = nullptr;
   if (auto *GO = dyn_cast<GlobalObject>(&GV))
-    UniqueID = GO->getMetadata(LLVMContext::MD_unique_id);
+    UniqueID = GO->getMetadata(LLVMContext::MD_guid);
 
   if (Function *F = dyn_cast<Function>(&GV)) {
     F->deleteBody();
     F->clearMetadata();
     if (UniqueID)
-      F->setMetadata(LLVMContext::MD_unique_id, UniqueID);
+      F->setMetadata(LLVMContext::MD_guid, UniqueID);
     F->setComdat(nullptr);
   } else if (GlobalVariable *V = dyn_cast<GlobalVariable>(&GV)) {
     V->setInitializer(nullptr);
     V->setLinkage(GlobalValue::ExternalLinkage);
     V->clearMetadata();
     if (UniqueID)
-      V->setMetadata(LLVMContext::MD_unique_id, UniqueID);
+      V->setMetadata(LLVMContext::MD_guid, UniqueID);
     V->setComdat(nullptr);
   } else {
     GlobalValue *NewGV;

llvm/lib/Transforms/IPO/LowerTypeTests.cpp

@@ -2274,7 +2274,7 @@ bool LowerTypeTestsModule::lower() {
               GlobalVariable::ExternalLinkage,
               M.getDataLayout().getProgramAddressSpace(), FunctionName, &M);
           F->setMetadata(
-              LLVMContext::MD_unique_id,
+              LLVMContext::MD_guid,
               MDTuple::get(M.getContext(), {FuncMD->getOperand(2).get()}));
         }
         // If the function is available_externally, remove its definition so
@@ -2284,12 +2284,12 @@ bool LowerTypeTestsModule::lower() {
         // following the code path below to replace the type metadata.
         if (F->hasAvailableExternallyLinkage()) {
           // Maintain !guid metadata.
-          auto *OrigGUIDMD = F->getMetadata(LLVMContext::MD_unique_id);
+          auto *OrigGUIDMD = F->getMetadata(LLVMContext::MD_guid);
           F->setLinkage(GlobalValue::ExternalLinkage);
           F->deleteBody();
           F->setComdat(nullptr);
           F->clearMetadata();
-          F->setMetadata(LLVMContext::MD_unique_id, OrigGUIDMD);
+          F->setMetadata(LLVMContext::MD_guid, OrigGUIDMD);
         }
 
         // Update the linkage for extern_weak declarations when a definition

llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp

@@ -216,8 +216,8 @@ void simplifyExternals(Module &M) {
                                            AttributeList::FunctionIndex,
                                            F.getAttributes().getFnAttrs()));
     NewF->takeName(&F);
-    NewF->setMetadata(LLVMContext::MD_unique_id,
-                      F.getMetadata(LLVMContext::MD_unique_id));
+    NewF->setMetadata(LLVMContext::MD_guid,
+                      F.getMetadata(LLVMContext::MD_guid));
     F.replaceAllUsesWith(NewF);
     F.eraseFromParent();
   }

llvm/lib/Transforms/Utils/AssignGUID.cpp

@@ -36,6 +36,6 @@ void AssignGUIDPass::assignGUIDForMergedGV(GlobalVariable &GV) {
   // that metadata from GV first, but we may want to remember those later, if
   // we had a motivation for that. In that case, we need some other metadata
   // to maintain that association.
-  GV.eraseMetadata(LLVMContext::MD_unique_id);
+  GV.eraseMetadata(LLVMContext::MD_guid);
   GV.assignGUID();
 }

llvm/lib/Transforms/Utils/CloneModule.cpp

@@ -155,8 +155,8 @@ std::unique_ptr<Module> llvm::CloneModule(
     }
 
     if (!ShouldCloneDefinition(&I)) {
-      if (auto *MD = I.getMetadata(LLVMContext::MD_unique_id))
-        F->setMetadata(LLVMContext::MD_unique_id, MapMetadata(MD, VMap));
+      if (auto *MD = I.getMetadata(LLVMContext::MD_guid))
+        F->setMetadata(LLVMContext::MD_guid, MapMetadata(MD, VMap));
       // Skip after setting the correct linkage for an external reference.
       F->setLinkage(GlobalValue::ExternalLinkage);
       // Personality function is not valid on a declaration.