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A bitcast of a global variable may have been constant folded to a GEP -
handle this case too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36745 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2457,6 +2457,24 @@ void SelectionDAGLowering::visitTargetIntrinsic(CallInst &I,
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}
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}
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/// ExtractGlobalVariable - If C is a global variable, or a bitcast of one
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/// (possibly constant folded), return it. Otherwise return NULL.
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static GlobalVariable *ExtractGlobalVariable (Constant *C) {
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C))
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return GV;
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else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
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if (CE->getOpcode() == Instruction::BitCast)
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return dyn_cast<GlobalVariable>(CE->getOperand(0));
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else if (CE->getOpcode() == Instruction::GetElementPtr) {
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for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i)
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if (!CE->getOperand(i)->isNullValue())
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return NULL;
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return dyn_cast<GlobalVariable>(CE->getOperand(0));
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}
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}
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return NULL;
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}
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/// visitIntrinsicCall - Lower the call to the specified intrinsic function. If
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/// we want to emit this as a call to a named external function, return the name
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/// otherwise lower it and return null.
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@ -2610,20 +2628,12 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
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// MachineModuleInfo.
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std::vector<GlobalVariable *> TyInfo;
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for (unsigned i = 3, N = I.getNumOperands(); i < N; ++i) {
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Constant *C = cast<Constant>(I.getOperand(i));
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) {
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TyInfo.push_back(GV);
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} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
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assert(CE->getOpcode() == Instruction::BitCast &&
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isa<GlobalVariable>(CE->getOperand(0))
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&& "TypeInfo must be a global variable or NULL");
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TyInfo.push_back(cast<GlobalVariable>(CE->getOperand(0)));
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} else {
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ConstantInt *CI = dyn_cast<ConstantInt>(C);
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assert(CI && CI->isNullValue() &&
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"TypeInfo must be a global variable or NULL");
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TyInfo.push_back(NULL);
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}
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Constant *C = cast<Constant>(I.getOperand(i));
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GlobalVariable *GV = ExtractGlobalVariable(C);
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assert (GV || (isa<ConstantInt>(C) &&
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cast<ConstantInt>(C)->isNullValue()) &&
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"TypeInfo must be a global variable or NULL");
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TyInfo.push_back(GV);
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}
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MMI->addCatchTypeInfo(CurMBB, TyInfo);
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@ -2651,18 +2661,12 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
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if (MMI) {
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// Find the type id for the given typeinfo.
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GlobalVariable *GV = NULL;
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ConstantExpr *CE = dyn_cast<ConstantExpr>(I.getOperand(1));
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if (CE && CE->getOpcode() == Instruction::BitCast &&
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isa<GlobalVariable>(CE->getOperand(0))) {
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GV = cast<GlobalVariable>(CE->getOperand(0));
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} else {
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ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand(1));
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assert(CI && CI->getZExtValue() == 0 &&
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"TypeInfo must be a global variable typeinfo or NULL");
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GV = NULL;
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}
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Constant *C = cast<Constant>(I.getOperand(1));
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GlobalVariable *GV = ExtractGlobalVariable(C);
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assert (GV || (isa<ConstantInt>(C) &&
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cast<ConstantInt>(C)->isNullValue()) &&
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"TypeInfo must be a global variable or NULL");
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unsigned TypeID = MMI->getTypeIDFor(GV);
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setValue(&I, DAG.getConstant(TypeID, MVT::i32));
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} else {
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