| //===-- Transform/Utils/BasicBlockUtils.h - BasicBlock Utils ----*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // 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 family of functions perform manipulations on basic blocks, and |
| // instructions contained within basic blocks. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TRANSFORMS_UTILS_BASICBLOCK_H |
| #define LLVM_TRANSFORMS_UTILS_BASICBLOCK_H |
| |
| // FIXME: Move to this file: BasicBlock::removePredecessor, BB::splitBasicBlock |
| |
| #include "llvm/BasicBlock.h" |
| class Instruction; |
| |
| // ReplaceInstWithValue - Replace all uses of an instruction (specified by BI) |
| // with a value, then remove and delete the original instruction. |
| // |
| void ReplaceInstWithValue(BasicBlock::InstListType &BIL, |
| BasicBlock::iterator &BI, Value *V); |
| |
| // ReplaceInstWithInst - Replace the instruction specified by BI with the |
| // instruction specified by I. The original instruction is deleted and BI is |
| // updated to point to the new instruction. |
| // |
| void ReplaceInstWithInst(BasicBlock::InstListType &BIL, |
| BasicBlock::iterator &BI, Instruction *I); |
| |
| // ReplaceInstWithInst - Replace the instruction specified by From with the |
| // instruction specified by To. |
| // |
| void ReplaceInstWithInst(Instruction *From, Instruction *To); |
| |
| |
| // RemoveSuccessor - Change the specified terminator instruction such that its |
| // successor #SuccNum no longer exists. Because this reduces the outgoing |
| // degree of the current basic block, the actual terminator instruction itself |
| // may have to be changed. In the case where the last successor of the block is |
| // deleted, a return instruction is inserted in its place which can cause a |
| // suprising change in program behavior if it is not expected. |
| // |
| void RemoveSuccessor(TerminatorInst *TI, unsigned SuccNum); |
| |
| #endif |