| //===- LowerSafecodeIntrinsic.cpp: ----------------------------------------===// |
| // |
| // The SAFECode Compiler |
| // |
| // This file was developed by the LLVM research group and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This pass lowers all intrinsics added by SAFECode to appropriate calls to |
| // run-time functions in the run-time implementation. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/IR/Module.h" |
| |
| #include "safecode/LowerSafecodeIntrinsic.h" |
| |
| using namespace llvm; |
| |
| char LowerSafecodeIntrinsic::ID = 0; |
| |
| static RegisterPass<LowerSafecodeIntrinsic> passReplaceFunction |
| ("lower-sc-intrinsic", "Replace all uses of a function to another"); |
| |
| namespace llvm { |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // LowerSafecodeIntrinsic Methods |
| //////////////////////////////////////////////////////////////////////////// |
| |
| bool |
| LowerSafecodeIntrinsic::runOnModule(Module & M) { |
| std::vector<IntrinsicMappingEntry>::const_iterator it=mReplaceList.begin(); |
| std::vector<IntrinsicMappingEntry>::const_iterator end=mReplaceList.end(); |
| for (; it != end; ++it) { |
| // |
| // Get a reference to the original function (if it exists). |
| // |
| Function * origF = M.getFunction(it->intrinsicName); |
| |
| // |
| // If the new function has a name different from the old function, create |
| // a function prototype of the new function and replace uses of the old |
| // function with it. |
| // |
| if (origF) { |
| Constant * newF = M.getOrInsertFunction (it->functionName, |
| origF->getFunctionType()); |
| origF->replaceAllUsesWith(newF); |
| origF->eraseFromParent(); |
| } |
| } |
| return true; |
| } |
| } |