src/llvm/lib/Target/NVPTX/NVPTXAllocaHoisting.h

   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
  32   NVPTXAllocaHoisting() : FunctionPass(ID) {}
  33
  34   void getAnalysisUsage(AnalysisUsage &AU) const override {
  35     AU.addRequired<DataLayoutPass>();
  36     AU.addPreserved<MachineFunctionAnalysis>();
  37     AU.addPreserved<StackProtector>();
  38   }
  39
  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