Encourage devirtualization (rust-lang#790)

Author: tgymnich

enzyme/BCLoad/BCLoader.cpp

@@ -101,7 +101,7 @@ uint8_t EnzymeBitcodeReplacement(LLVMModuleRef M) {
 }
 
 namespace {
-class BCLoader : public ModulePass {
+class BCLoader final : public ModulePass {
 public:
   static char ID;
   BCLoader() : ModulePass(ID) {}

enzyme/Enzyme/ActivityAnalysisPrinter.cpp

@@ -74,7 +74,7 @@ static llvm::cl::opt<bool>
                   cl::Hidden, cl::desc("Whether the return is duplicated"));
 namespace {
 
-class ActivityAnalysisPrinter : public FunctionPass {
+class ActivityAnalysisPrinter final : public FunctionPass {
 public:
   static char ID;
   ActivityAnalysisPrinter() : FunctionPass(ID) {}

enzyme/Enzyme/Clang/EnzymeClang.cpp

@@ -29,7 +29,7 @@
 #include "clang/Frontend/FrontendPluginRegistry.h"
 
 template <typename ConsumerType>
-class EnzymeAction : public clang::PluginASTAction {
+class EnzymeAction final : public clang::PluginASTAction {
 protected:
   std::unique_ptr<clang::ASTConsumer>
   CreateASTConsumer(clang::CompilerInstance &CI, llvm::StringRef InFile) {
@@ -46,7 +46,7 @@ class EnzymeAction : public clang::PluginASTAction {
   }
 };
 
-class EnzymePlugin : public clang::ASTConsumer {
+class EnzymePlugin final : public clang::ASTConsumer {
   clang::CompilerInstance &CI;
 
 public:

enzyme/Enzyme/Enzyme.cpp

@@ -752,7 +752,7 @@ static bool replaceOriginalCall(CallInst *CI, Function *fn, Value *diffret,
   return true;
 }
 
-class Enzyme : public ModulePass {
+class Enzyme final : public ModulePass {
 public:
   EnzymeLogic Logic;
   static char ID;

enzyme/Enzyme/GradientUtils.h

@@ -109,7 +109,7 @@ struct InvertedPointerConfig : ValueMapConfig<const llvm::Value *> {
   static void onDelete(ExtraData gutils, const llvm::Value *old);
 };
 
-class InvertedPointerVH : public llvm::CallbackVH {
+class InvertedPointerVH final : public llvm::CallbackVH {
 public:
   GradientUtils *gutils;
   InvertedPointerVH(GradientUtils *gutils) : gutils(gutils) {}
@@ -1972,7 +1972,7 @@ class GradientUtils : public CacheUtility {
   }
 };
 
-class DiffeGradientUtils : public GradientUtils {
+class DiffeGradientUtils final : public GradientUtils {
   DiffeGradientUtils(EnzymeLogic &Logic, Function *newFunc_, Function *oldFunc_,
                      TargetLibraryInfo &TLI, TypeAnalysis &TA, TypeResults TR,
                      ValueToValueMapTy &invertedPointers_,

enzyme/Enzyme/InstructionBatcher.h

@@ -43,7 +43,7 @@
 
 using namespace llvm;
 
-class InstructionBatcher : public llvm::InstVisitor<InstructionBatcher> {
+class InstructionBatcher final : public llvm::InstVisitor<InstructionBatcher> {
 public:
   InstructionBatcher(
       Function *oldFunc, Function *newFunc, unsigned width,

enzyme/Enzyme/MustExitScalarEvolution.h

@@ -32,7 +32,7 @@
 
 #include "llvm/IR/Dominators.h"
 
-class MustExitScalarEvolution : public llvm::ScalarEvolution {
+class MustExitScalarEvolution final : public llvm::ScalarEvolution {
 public:
   llvm::SmallPtrSet<llvm::BasicBlock *, 4> GuaranteedUnreachable;
   using ScalarEvolution::ScalarEvolution;

enzyme/Enzyme/PreserveNVVM.cpp

@@ -48,7 +48,7 @@ using namespace llvm;
 
 namespace {
 
-class PreserveNVVM : public FunctionPass {
+class PreserveNVVM final : public FunctionPass {
 public:
   static char ID;
   bool Begin;

enzyme/Enzyme/TypeAnalysis/TypeAnalysisPrinter.cpp

@@ -66,7 +66,7 @@ llvm::cl::opt<std::string>
 
 namespace {
 
-class TypeAnalysisPrinter : public FunctionPass {
+class TypeAnalysisPrinter final : public FunctionPass {
 public:
   static char ID;
   TypeAnalysisPrinter() : FunctionPass(ID) {}

enzyme/Enzyme/Utils.h

@@ -136,7 +136,7 @@ void EmitWarning(llvm::StringRef RemarkName, const llvm::Function *F,
     (llvm::errs() << ... << args) << "\n";
 }
 
-class EnzymeFailure : public llvm::DiagnosticInfoIROptimization {
+class EnzymeFailure final : public llvm::DiagnosticInfoIROptimization {
 public:
   EnzymeFailure(llvm::StringRef RemarkName, const llvm::DiagnosticLocation &Loc,
                 const llvm::Instruction *CodeRegion);
@@ -941,7 +941,7 @@ llvm::Value *getOrInsertOpFloatSum(llvm::Module &M, llvm::Type *OpPtr,
                                    llvm::IRBuilder<> &B2);
 llvm::Function *getOrInsertExponentialAllocator(llvm::Module &M, bool ZeroInit);
 
-class AssertingReplacingVH : public llvm::CallbackVH {
+class AssertingReplacingVH final : public llvm::CallbackVH {
 public:
   AssertingReplacingVH() = default;