IRGen: Remove supportsTypedPointers, getNonOpaquePointerElementType, isOpaqueOrPointeeTypeMatches

Typed pointers are no longer supported by llvm.

rdar://121083958

Author: aschwaighofer

lib/IRGen/GenCall.cpp

@@ -3204,26 +3204,6 @@ llvm::CallBase *CallEmission::emitCallSite() {
   return call;
 }
 
-static llvm::AttributeList
-assertTypesInByValAndStructRetAttributes(llvm::FunctionType *fnType,
-                                         llvm::AttributeList attrList) {
-  auto &context = fnType->getContext();
-  if (context.supportsTypedPointers()) {
-    for (unsigned i = 0; i < fnType->getNumParams(); ++i) {
-      auto paramTy = fnType->getParamType(i);
-      assert(
-          !attrList.hasParamAttr(i, llvm::Attribute::StructRet) ||
-          llvm::cast<llvm::PointerType>(paramTy)->isOpaqueOrPointeeTypeMatches(
-              attrList.getParamStructRetType(i)));
-      assert(
-          !attrList.hasParamAttr(i, llvm::Attribute::ByVal) ||
-          llvm::cast<llvm::PointerType>(paramTy)->isOpaqueOrPointeeTypeMatches(
-              attrList.getParamByValType(i)));
-    }
-  }
-  return attrList;
-}
-
 llvm::CallBase *IRBuilder::CreateCallOrInvoke(
     const FunctionPointer &fn, ArrayRef<llvm::Value *> args,
     llvm::BasicBlock *invokeNormalDest, llvm::BasicBlock *invokeUnwindDest) {
@@ -3265,7 +3245,7 @@ llvm::CallBase *IRBuilder::CreateCallOrInvoke(
       }
     }
   }
-  call->setAttributes(assertTypesInByValAndStructRetAttributes(fnTy, attrs));
+  call->setAttributes(attrs);
   call->setCallingConv(fn.getCallingConv());
   return call;
 }
@@ -3462,10 +3442,6 @@ void CallEmission::emitToExplosion(Explosion &out, bool isOutlined) {
         resultTy = func->getParamStructRetType(0);
       }
       auto temp = IGF.createAlloca(resultTy, Alignment(), "indirect.result");
-      if (IGF.IGM.getLLVMContext().supportsTypedPointers()) {
-        temp = IGF.Builder.CreateElementBitCast(
-            temp, fnType->getParamType(0)->getNonOpaquePointerElementType());
-      }
       emitToMemory(temp, substResultTI, isOutlined);
       return;
     }
@@ -3492,10 +3468,6 @@ void CallEmission::emitToExplosion(Explosion &out, bool isOutlined) {
         auto resultTy = func->getParamStructRetType(1);
         auto temp = IGF.createAlloca(resultTy, Alignment(/*safe alignment*/ 16),
                                      "indirect.result");
-        if (IGF.IGM.getLLVMContext().supportsTypedPointers()) {
-          temp = IGF.Builder.CreateElementBitCast(
-              temp, fnType->getParamType(1)->getNonOpaquePointerElementType());
-        }
         emitToMemory(temp, substResultTI, isOutlined);
         return;
       }
@@ -5940,34 +5912,24 @@ llvm::FunctionType *FunctionPointer::getFunctionType() const {
   }
 
   if (awaitSignature) {
-    assert(llvm::cast<llvm::PointerType>(Value->getType())
-               ->isOpaqueOrPointeeTypeMatches(awaitSignature));
     return cast<llvm::FunctionType>(awaitSignature);
   }
 
   // Read the function type off the global or else from the Signature.
   if (auto *constant = dyn_cast<llvm::Constant>(Value)) {
     auto *gv = dyn_cast<llvm::GlobalValue>(Value);
     if (!gv) {
-      assert(llvm::cast<llvm::PointerType>(Value->getType())
-                 ->isOpaqueOrPointeeTypeMatches(Sig.getType()));
       return Sig.getType();
     }
 
     if (useSignature) { // Because of various casting (e.g thin_to_thick) the
                       // signature of the function Value might mismatch
                       // (e.g no context argument).
-      assert(llvm::cast<llvm::PointerType>(Value->getType())
-                 ->isOpaqueOrPointeeTypeMatches(Sig.getType()));
       return Sig.getType();
     }
 
-    assert(llvm::cast<llvm::PointerType>(Value->getType())
-               ->isOpaqueOrPointeeTypeMatches(gv->getValueType()));
     return cast<llvm::FunctionType>(gv->getValueType());
   }
 
-  assert(llvm::cast<llvm::PointerType>(Value->getType())
-             ->isOpaqueOrPointeeTypeMatches(Sig.getType()));
   return Sig.getType();
 }

lib/IRGen/GenDistributed.cpp

@@ -712,12 +712,6 @@ void DistributedAccessor::emit() {
 
     // Generic arguments associated with the distributed thunk directly
     // e.g. `distributed func echo<T, U>(...)`
-    assert(
-        !IGM.getLLVMContext().supportsTypedPointers() ||
-        expandedSignature.numTypeMetadataPtrs ==
-            llvm::count_if(targetGenericArguments, [&](const llvm::Type *type) {
-              return type == IGM.TypeMetadataPtrTy;
-            }));
 
     for (unsigned index = 0; index < expandedSignature.numTypeMetadataPtrs; ++index) {
       auto offset =

lib/IRGen/GenFunc.cpp

@@ -225,13 +225,6 @@ namespace {
                     bool isOutlined) const override {
       auto *fn = src.claimNext();
 
-      // We might be presented with a value of the more precise pointer to
-      // function type "void(*)*" rather than the generic "i8*". Downcast to the
-      // more general expected type.
-      if (fn->getContext().supportsTypedPointers() &&
-          fn->getType()->getNonOpaquePointerElementType()->isFunctionTy())
-        fn = IGF.Builder.CreateBitCast(fn, getStorageType());
-
       Explosion tmp;
       tmp.add(fn);
       PODSingleScalarTypeInfo<ThinFuncTypeInfo,LoadableTypeInfo>::initialize(IGF, tmp, addr, isOutlined);

lib/IRGen/GenObjC.cpp

@@ -459,20 +459,7 @@ getProtocolRefsList(llvm::Constant *protocol) {
     return std::make_pair(0, nullptr);
   }
 
-  if (!protocol->getContext().supportsTypedPointers()) {
-    auto protocolRefsVar = cast<llvm::GlobalVariable>(objCProtocolList);
-    auto sizeListPair =
-        cast<llvm::ConstantStruct>(protocolRefsVar->getInitializer());
-    auto size =
-        cast<llvm::ConstantInt>(sizeListPair->getOperand(0))->getZExtValue();
-    auto protocolRefsList =
-        cast<llvm::ConstantArray>(sizeListPair->getOperand(1));
-    return std::make_pair(size, protocolRefsList);
-  }
-
-  auto bitcast = cast<llvm::ConstantExpr>(objCProtocolList);
-  assert(bitcast->getOpcode() == llvm::Instruction::BitCast);
-  auto protocolRefsVar = cast<llvm::GlobalVariable>(bitcast->getOperand(0));
+  auto protocolRefsVar = cast<llvm::GlobalVariable>(objCProtocolList);
   auto sizeListPair =
       cast<llvm::ConstantStruct>(protocolRefsVar->getInitializer());
   auto size =

lib/IRGen/GenStruct.cpp

@@ -463,14 +463,6 @@ namespace {
               clang::QualType(clangDecl->getTypeForDecl(), 0));
       auto *dstValue = dst.getAddress();
       auto *srcValue = src.getAddress();
-      if (IGF.IGM.getLLVMContext().supportsTypedPointers()) {
-        dstValue = IGF.coerceValue(
-            dst.getAddress(), copyFunction->getFunctionType()->getParamType(0),
-            IGF.IGM.DataLayout);
-        srcValue = IGF.coerceValue(
-            src.getAddress(), copyFunction->getFunctionType()->getParamType(1),
-            IGF.IGM.DataLayout);
-      }
       IGF.Builder.CreateCall(copyFunction->getFunctionType(), copyFunction,
                              {dstValue, srcValue});
     }
@@ -634,12 +626,6 @@ namespace {
       clangFnAddr = emitCXXConstructorThunkIfNeeded(
           IGF.IGM, signature, copyConstructor, name, clangFnAddr);
       callee = cast<llvm::Function>(clangFnAddr);
-      if (IGF.IGM.getLLVMContext().supportsTypedPointers()) {
-        dest = IGF.coerceValue(dest, callee->getFunctionType()->getParamType(0),
-                               IGF.IGM.DataLayout);
-        src = IGF.coerceValue(src, callee->getFunctionType()->getParamType(1),
-                              IGF.IGM.DataLayout);
-      }
       llvm::Value *args[] = {dest, src};
       if (clangFnAddr == origClangFnAddr) {
         // Ensure we can use 'invoke' to trap on uncaught exceptions when
@@ -705,10 +691,6 @@ namespace {
 
       SmallVector<llvm::Value *, 2> args;
       auto *thisArg = address.getAddress();
-      if (IGF.IGM.getLLVMContext().supportsTypedPointers())
-        thisArg = IGF.coerceValue(address.getAddress(),
-                                  destructorFnAddr->getArg(0)->getType(),
-                                  IGF.IGM.DataLayout);
       args.push_back(thisArg);
       llvm::Value *implicitParam =
           clang::CodeGen::getCXXDestructorImplicitParam(

lib/IRGen/GenType.cpp

@@ -115,8 +115,6 @@ TypeInfo::~TypeInfo() {
 }
 
 Address TypeInfo::getAddressForPointer(llvm::Value *ptr) const {
-  assert(cast<llvm::PointerType>(ptr->getType())
-             ->isOpaqueOrPointeeTypeMatches(getStorageType()));
   return Address(ptr, getStorageType(), getBestKnownAlignment());
 }
 

lib/LLVMPasses/LLVMMergeFunctions.cpp

@@ -1261,29 +1261,6 @@ void SwiftMergeFunctions::writeThunk(Function *ToFunc, Function *Thunk,
   ++NumSwiftThunksWritten;
 }
 
-static llvm::AttributeList
-fixUpTypesInByValAndStructRetAttributes(llvm::FunctionType *fnType,
-                                        llvm::AttributeList attrList) {
-  auto &context = fnType->getContext();
-  if (!context.supportsTypedPointers())
-    return attrList;
-
-  for (unsigned i = 0; i < fnType->getNumParams(); ++i) {
-    auto paramTy = fnType->getParamType(i);
-    auto attrListIndex = llvm::AttributeList::FirstArgIndex + i;
-    if (attrList.hasParamAttr(i, llvm::Attribute::StructRet) &&
-        paramTy->getNonOpaquePointerElementType() != attrList.getParamStructRetType(i))
-      attrList = attrList.replaceAttributeTypeAtIndex(
-          context, attrListIndex, llvm::Attribute::StructRet,
-          paramTy->getNonOpaquePointerElementType());
-    if (attrList.hasParamAttr(i, llvm::Attribute::ByVal) &&
-        paramTy->getNonOpaquePointerElementType() != attrList.getParamByValType(i))
-      attrList = attrList.replaceAttributeTypeAtIndex(
-          context, attrListIndex, llvm::Attribute::ByVal,
-          paramTy->getNonOpaquePointerElementType());
-  }
-  return attrList;
-}
 /// Replace direct callers of Old with New. Also add parameters to the call to
 /// \p New, which are defined by the FuncIdx's value in \p Params.
 bool SwiftMergeFunctions::replaceDirectCallers(Function *Old, Function *New,
@@ -1356,7 +1333,6 @@ bool SwiftMergeFunctions::replaceDirectCallers(Function *Old, Function *New,
     auto newAttrList = AttributeList::get(Context, /*FnAttrs=*/AttributeSet(),
                                             NewPAL.getRetAttrs(),
                                             NewArgAttrs);
-    newAttrList = fixUpTypesInByValAndStructRetAttributes(FType, newAttrList);
     NewCI->setAttributes(newAttrList);
     Value *retVal = createCast(Builder, NewCI, CI->getType());
     CI->replaceAllUsesWith(retVal);