Don't use PassInfo* as a type identifier for passes. Instead, use the address of...

[oota-llvm.git] / lib / Transforms / Utils / LowerInvoke.cpp

diff --git a/lib/Transforms/Utils/LowerInvoke.cpp b/lib/Transforms/Utils/LowerInvoke.cpp
index 90e9b3168ec9af56b3361af5bca848c590238a46..f239a9970d834be2b5869bc9d38b530a338f1a28 100644 (file)
--- a/lib/Transforms/Utils/LowerInvoke.cpp
+++ b/lib/Transforms/Utils/LowerInvoke.cpp
@@ -63,10 +63,7 @@ static cl::opt<bool> ExpensiveEHSupport("enable-correct-eh-support",
 namespace {
   class LowerInvoke : public FunctionPass {
     // Used for both models.
-    Constant *WriteFn;
     Constant *AbortFn;
-    Value *AbortMessage;
-    unsigned AbortMessageLength;
 
     // Used for expensive EH support.
     const Type *JBLinkTy;
@@ -81,7 +78,7 @@ namespace {
     static char ID; // Pass identification, replacement for typeid
     explicit LowerInvoke(const TargetLowering *tli = NULL,
                          bool useExpensiveEHSupport = ExpensiveEHSupport)
-      : FunctionPass(&ID), useExpensiveEHSupport(useExpensiveEHSupport),
+      : FunctionPass(ID), useExpensiveEHSupport(useExpensiveEHSupport),
         TLI(tli) { }
     bool doInitialization(Module &M);
     bool runOnFunction(Function &F);
@@ -93,8 +90,6 @@ namespace {
     }
 
   private:
-    void createAbortMessage(Module *M);
-    void writeAbortMessage(Instruction *IB);
     bool insertCheapEHSupport(Function &F);
     void splitLiveRangesLiveAcrossInvokes(SmallVectorImpl<InvokeInst*>&Invokes);
     void rewriteExpensiveInvoke(InvokeInst *II, unsigned InvokeNo,
@@ -108,7 +103,7 @@ char LowerInvoke::ID = 0;
 static RegisterPass<LowerInvoke>
 X("lowerinvoke", "Lower invoke and unwind, for unwindless code generators");
 
-const PassInfo *const llvm::LowerInvokePassID = &X;
+char &llvm::LowerInvokePassID = LowerInvoke::ID;
 
 // Public Interface To the LowerInvoke pass.
 FunctionPass *llvm::createLowerInvokePass(const TargetLowering *TLI) {
@@ -124,7 +119,6 @@ FunctionPass *llvm::createLowerInvokePass(const TargetLowering *TLI,
 bool LowerInvoke::doInitialization(Module &M) {
   const Type *VoidPtrTy =
           Type::getInt8PtrTy(M.getContext());
-  AbortMessage = 0;
   if (useExpensiveEHSupport) {
     // Insert a type for the linked list of jump buffers.
     unsigned JBSize = TLI ? TLI->getJumpBufSize() : 0;
@@ -176,61 +170,9 @@ bool LowerInvoke::doInitialization(Module &M) {
   // We need the 'write' and 'abort' functions for both models.
   AbortFn = M.getOrInsertFunction("abort", Type::getVoidTy(M.getContext()),
                                   (Type *)0);
-#if 0 // "write" is Unix-specific.. code is going away soon anyway.
-  WriteFn = M.getOrInsertFunction("write", Type::VoidTy, Type::Int32Ty,
-                                  VoidPtrTy, Type::Int32Ty, (Type *)0);
-#else
-  WriteFn = 0;
-#endif
   return true;
 }
 
-void LowerInvoke::createAbortMessage(Module *M) {
-  Constant *Null32 = Constant::getNullValue(Type::getInt32Ty(M->getContext()));
-  Constant *GEPIdx[2] = { Null32, Null32 };
-  if (useExpensiveEHSupport) {
-    // The abort message for expensive EH support tells the user that the
-    // program 'unwound' without an 'invoke' instruction.
-    Constant *Msg =
-      ConstantArray::get(M->getContext(),
-                         "ERROR: Exception thrown, but not caught!\n");
-    AbortMessageLength = Msg->getNumOperands()-1;  // don't include \0
-
-    GlobalVariable *MsgGV = new GlobalVariable(*M, Msg->getType(), true,
-                                               GlobalValue::InternalLinkage,
-                                               Msg, "abortmsg");
-    AbortMessage = ConstantExpr::getGetElementPtr(MsgGV, &GEPIdx[0], 2);
-  } else {
-    // The abort message for cheap EH support tells the user that EH is not
-    // enabled.
-    Constant *Msg =
-      ConstantArray::get(M->getContext(), 
-                        "Exception handler needed, but not enabled."      
-                        "Recompile program with -enable-correct-eh-support.\n");
-    AbortMessageLength = Msg->getNumOperands()-1;  // don't include \0
-
-    GlobalVariable *MsgGV = new GlobalVariable(*M, Msg->getType(), true,
-                                               GlobalValue::InternalLinkage,
-                                               Msg, "abortmsg");
-    AbortMessage = ConstantExpr::getGetElementPtr(MsgGV, &GEPIdx[0], 2);
-  }
-}
-
-
-void LowerInvoke::writeAbortMessage(Instruction *IB) {
-#if 0
-  if (AbortMessage == 0)
-    createAbortMessage(IB->getParent()->getParent()->getParent());
-
-  // These are the arguments we WANT...
-  Value* Args[3];
-  Args[0] = ConstantInt::get(Type::Int32Ty, 2);
-  Args[1] = AbortMessage;
-  Args[2] = ConstantInt::get(Type::Int32Ty, AbortMessageLength);
-  (new CallInst(WriteFn, Args, 3, "", IB))->setTailCall();
-#endif
-}
-
 bool LowerInvoke::insertCheapEHSupport(Function &F) {
   bool Changed = false;
   for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
@@ -256,9 +198,6 @@ bool LowerInvoke::insertCheapEHSupport(Function &F) {
 
       ++NumInvokes; Changed = true;
     } else if (UnwindInst *UI = dyn_cast<UnwindInst>(BB->getTerminator())) {
-      // Insert a new call to write(2, AbortMessage, AbortMessageLength);
-      writeAbortMessage(UI);
-
       // Insert a call to abort()
       CallInst::Create(AbortFn, "", UI)->setTailCall();
 
@@ -371,15 +310,15 @@ splitLiveRangesLiveAcrossInvokes(SmallVectorImpl<InvokeInst*> &Invokes) {
   for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end();
        AI != E; ++AI) {
     const Type *Ty = AI->getType();
-    // StructType can't be cast, but is a legal argument type, so we have
+    // Aggregate types can't be cast, but are legal argument types, so we have
     // to handle them differently. We use an extract/insert pair as a
     // lightweight method to achieve the same goal.
-    if (isa<StructType>(Ty)) {
-      Instruction *EI = ExtractValueInst::Create(AI, 0, "", AfterAllocaInsertPt);
+    if (isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<VectorType>(Ty)) {
+      Instruction *EI = ExtractValueInst::Create(AI, 0, "",AfterAllocaInsertPt);
       Instruction *NI = InsertValueInst::Create(AI, EI, 0);
       NI->insertAfter(EI);
       AI->replaceAllUsesWith(NI);
-      // Set the struct operand of the instructions back to the AllocaInst.
+      // Set the operand of the instructions back to the AllocaInst.
       EI->setOperand(0, AI);
       NI->setOperand(0, AI);
     } else {
@@ -634,9 +573,6 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
   // Set up the term block ("throw without a catch").
   new UnreachableInst(F.getContext(), TermBlock);
 
-  // Insert a new call to write(2, AbortMessage, AbortMessageLength);
-  writeAbortMessage(TermBlock->getTerminator());
-
   // Insert a call to abort()
   CallInst::Create(AbortFn, "",
                    TermBlock->getTerminator())->setTailCall();