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 SPARC_SUBTARGET_H
15 #define SPARC_SUBTARGET_H
16 
17 #include "llvm/Target/TargetSubtargetInfo.h"
18 #include <string>
19 
20 #define GET_SUBTARGETINFO_HEADER
21 #include "SparcGenSubtargetInfo.inc"
22 
23 namespace llvm {
24 class StringRef;
25 
26 class SparcSubtarget : public SparcGenSubtargetInfo {
27   virtual void anchor();
28   bool IsV9;
29   bool V8DeprecatedInsts;
30   bool IsVIS;
31   bool Is64Bit;
32   bool HasHardQuad;
33   bool UsePopc;
34 
35 public:
36   SparcSubtarget(const std::string &TT, const std::string &CPU,
37                  const std::string &FS, bool is64bit);
38 
isV9()39   bool isV9() const { return IsV9; }
isVIS()40   bool isVIS() const { return IsVIS; }
useDeprecatedV8Instructions()41   bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
hasHardQuad()42   bool hasHardQuad() const { return HasHardQuad; }
usePopc()43   bool usePopc() const { return UsePopc; }
44 
45   /// ParseSubtargetFeatures - Parses features string setting specified
46   /// subtarget options.  Definition of function is auto generated by tblgen.
47   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
48 
is64Bit()49   bool is64Bit() const { return Is64Bit; }
getDataLayout()50   std::string getDataLayout() const {
51     const char *p;
52     if (is64Bit()) {
53       p = "E-p:64:64:64-i64:64:64-f64:64:64-f128:128:128-n32:64";
54     } else {
55       p = "E-p:32:32:32-i64:64:64-f64:64:64-f128:64:64-n32";
56     }
57     return std::string(p);
58   }
59 
60   /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
61   /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
getStackPointerBias()62   int64_t getStackPointerBias() const {
63     return is64Bit() ? 2047 : 0;
64   }
65 
66   /// Given a actual stack size as determined by FrameInfo, this function
67   /// returns adjusted framesize which includes space for register window
68   /// spills and arguments.
69   int getAdjustedFrameSize(int stackSize) const;
70 
71 };
72 
73 } // end namespace llvm
74 
75 #endif
76