1//===-- AllocaHoisting.h - Hosist allocas to the entry block ----*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// Hoist the alloca instructions in the non-entry blocks to the entry blocks. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef NVPTX_ALLOCA_HOISTING_H_ 15#define NVPTX_ALLOCA_HOISTING_H_ 16 17#include "llvm/CodeGen/MachineFunctionAnalysis.h" 18#include "llvm/IR/DataLayout.h" 19#include "llvm/Pass.h" 20 21namespace llvm { 22 23class FunctionPass; 24class Function; 25 26// Hoisting the alloca instructions in the non-entry blocks to the entry 27// block. 28class NVPTXAllocaHoisting : public FunctionPass { 29public: 30 static char ID; // Pass ID 31 NVPTXAllocaHoisting() : FunctionPass(ID) {} 32 33 void getAnalysisUsage(AnalysisUsage &AU) const override { 34 AU.addRequired<DataLayoutPass>(); 35 AU.addPreserved("stack-protector"); 36 AU.addPreserved<MachineFunctionAnalysis>(); 37 } 38 39 const char *getPassName() const override { 40 return "NVPTX specific alloca hoisting"; 41 } 42 43 bool runOnFunction(Function &function) override; 44}; 45 46extern FunctionPass *createAllocaHoisting(); 47 48} // end namespace llvm 49 50#endif // NVPTX_ALLOCA_HOISTING_H_ 51