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