1 //===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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 // This file declares the SPARC specific subclass of TargetSubtargetInfo.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
15 #define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
16 
17 #include "SparcFrameLowering.h"
18 #include "SparcInstrInfo.h"
19 #include "SparcISelLowering.h"
20 #include "SparcSelectionDAGInfo.h"
21 #include "llvm/IR/DataLayout.h"
22 #include "llvm/Target/TargetFrameLowering.h"
23 #include "llvm/Target/TargetSubtargetInfo.h"
24 #include <string>
25 
26 #define GET_SUBTARGETINFO_HEADER
27 #include "SparcGenSubtargetInfo.inc"
28 
29 namespace llvm {
30 class StringRef;
31 
32 class SparcSubtarget : public SparcGenSubtargetInfo {
33   virtual void anchor();
34   bool IsV9;
35   bool V8DeprecatedInsts;
36   bool IsVIS, IsVIS2, IsVIS3;
37   bool Is64Bit;
38   bool HasHardQuad;
39   bool UsePopc;
40   SparcInstrInfo InstrInfo;
41   SparcTargetLowering TLInfo;
42   SparcSelectionDAGInfo TSInfo;
43   SparcFrameLowering FrameLowering;
44 
45 public:
46   SparcSubtarget(const std::string &TT, const std::string &CPU,
47                  const std::string &FS, TargetMachine &TM, bool is64bit);
48 
getInstrInfo()49   const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
getFrameLowering()50   const TargetFrameLowering *getFrameLowering() const override {
51     return &FrameLowering;
52   }
getRegisterInfo()53   const SparcRegisterInfo *getRegisterInfo() const override {
54     return &InstrInfo.getRegisterInfo();
55   }
getTargetLowering()56   const SparcTargetLowering *getTargetLowering() const override {
57     return &TLInfo;
58   }
getSelectionDAGInfo()59   const SparcSelectionDAGInfo *getSelectionDAGInfo() const override {
60     return &TSInfo;
61   }
62 
isV9()63   bool isV9() const { return IsV9; }
isVIS()64   bool isVIS() const { return IsVIS; }
isVIS2()65   bool isVIS2() const { return IsVIS2; }
isVIS3()66   bool isVIS3() const { return IsVIS3; }
useDeprecatedV8Instructions()67   bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
hasHardQuad()68   bool hasHardQuad() const { return HasHardQuad; }
usePopc()69   bool usePopc() const { return UsePopc; }
70 
71   /// ParseSubtargetFeatures - Parses features string setting specified
72   /// subtarget options.  Definition of function is auto generated by tblgen.
73   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
74   SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
75 
is64Bit()76   bool is64Bit() const { return Is64Bit; }
77 
78   /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
79   /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
getStackPointerBias()80   int64_t getStackPointerBias() const {
81     return is64Bit() ? 2047 : 0;
82   }
83 
84   /// Given a actual stack size as determined by FrameInfo, this function
85   /// returns adjusted framesize which includes space for register window
86   /// spills and arguments.
87   int getAdjustedFrameSize(int stackSize) const;
88 
89 };
90 
91 } // end namespace llvm
92 
93 #endif
94