1 /* 2 * Copyright 2013, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "llvm/IR/Module.h" 18 #include "llvm/Pass.h" 19 20 namespace slang { 21 22 // Remove any readnone/readonly attributes from function parameters. 23 // Jellybean's LLVM version didn't support readnone/readonly as anything 24 // other than function attributes, so it will fail verification otherwise. 25 // Since we never ran the verifier in Jellybean, it ends up with potential 26 // crashes deeper in CodeGen. 27 class StripUnknownAttributes : public llvm::ModulePass { 28 public: 29 static char ID; 30 31 StripUnknownAttributes(); 32 33 bool runOnFunction(llvm::Function &F); 34 35 // We have to use a ModulePass, since a FunctionPass only gets run on 36 // defined Functions (and not declared Functions). 37 virtual bool runOnModule(llvm::Module &M); 38 }; 39 40 llvm::ModulePass * createStripUnknownAttributesPass(); 41 42 } // namespace slang 43
