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 LLVM_LIB_TARGET_NVPTX_NVPTXALLOCAHOISTING_H 15 #define LLVM_LIB_TARGET_NVPTX_NVPTXALLOCAHOISTING_H 16 17 #include "llvm/CodeGen/MachineFunctionAnalysis.h" 18 #include "llvm/CodeGen/StackProtector.h" 19 #include "llvm/IR/DataLayout.h" 20 #include "llvm/Pass.h" 21 22 namespace llvm { 23 24 class FunctionPass; 25 class Function; 26 27 // Hoisting the alloca instructions in the non-entry blocks to the entry 28 // block. 29 class NVPTXAllocaHoisting : public FunctionPass { 30 public: 31 static char ID; // Pass ID NVPTXAllocaHoisting()32 NVPTXAllocaHoisting() : FunctionPass(ID) {} 33 getAnalysisUsage(AnalysisUsage & AU)34 void getAnalysisUsage(AnalysisUsage &AU) const override { 35 AU.addRequired<DataLayoutPass>(); 36 AU.addPreserved<MachineFunctionAnalysis>(); 37 AU.addPreserved<StackProtector>(); 38 } 39 getPassName()40 const char *getPassName() const override { 41 return "NVPTX specific alloca hoisting"; 42 } 43 44 bool runOnFunction(Function &function) override; 45 }; 46 47 extern FunctionPass *createAllocaHoisting(); 48 49 } // end namespace llvm 50 51 #endif 52