1 //===-- VESubtarget.h - Define Subtarget for the VE -------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file declares the VE specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_VE_VESUBTARGET_H
14 #define LLVM_LIB_TARGET_VE_VESUBTARGET_H
15 
16 #include "VEFrameLowering.h"
17 #include "VEISelLowering.h"
18 #include "VEInstrInfo.h"
19 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
20 #include "llvm/CodeGen/TargetFrameLowering.h"
21 #include "llvm/CodeGen/TargetSubtargetInfo.h"
22 #include "llvm/IR/DataLayout.h"
23 #include <string>
24 
25 #define GET_SUBTARGETINFO_HEADER
26 #include "VEGenSubtargetInfo.inc"
27 
28 namespace llvm {
29 class StringRef;
30 
31 class VESubtarget : public VEGenSubtargetInfo {
32   Triple TargetTriple;
33   virtual void anchor();
34 
35   /// Features {
36 
37   // Emit VPU instructions
38   bool EnableVPU;
39 
40   /// } Features
41 
42   VEInstrInfo InstrInfo;
43   VETargetLowering TLInfo;
44   SelectionDAGTargetInfo TSInfo;
45   VEFrameLowering FrameLowering;
46 
47 public:
48   VESubtarget(const Triple &TT, const std::string &CPU, const std::string &FS,
49               const TargetMachine &TM);
50 
51   const VEInstrInfo *getInstrInfo() const override { return &InstrInfo; }
52   const VEFrameLowering *getFrameLowering() const override {
53     return &FrameLowering;
54   }
55   const VERegisterInfo *getRegisterInfo() const override {
56     return &InstrInfo.getRegisterInfo();
57   }
58   const VETargetLowering *getTargetLowering() const override { return &TLInfo; }
59   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
60     return &TSInfo;
61   }
62 
63   bool enableMachineScheduler() const override;
64 
65   bool enableVPU() const { return EnableVPU; }
66 
67   /// ParseSubtargetFeatures - Parses features string setting specified
68   /// subtarget options.  Definition of function is auto generated by tblgen.
69   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
70   VESubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
71 
72   /// Given a actual stack size as determined by FrameInfo, this function
73   /// returns adjusted framesize which includes space for RSA, return
74   /// address, and frame poitner.
75   uint64_t getAdjustedFrameSize(uint64_t FrameSize) const;
76 
77   /// Get the size of RSA, return address, and frame pointer as described
78   /// in VEFrameLowering.cpp.
79   unsigned getRsaSize() const { return 176; };
80 
81   bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
82 };
83 
84 } // namespace llvm
85 
86 #endif
87