SparcSubtarget.h revision 1e06bcbd633175d75d13aaa5695ca0633ba86068 
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
23namespace llvm {
24class StringRef;
25
26class SparcSubtarget : public SparcGenSubtargetInfo {
27  virtual void anchor();
28  bool IsV9;
29  bool V8DeprecatedInsts;
30  bool IsVIS;
31  bool Is64Bit;
32
33public:
34  SparcSubtarget(const std::string &TT, const std::string &CPU,
35                 const std::string &FS, bool is64bit);
36
37  bool isV9() const { return IsV9; }
38  bool isVIS() const { return IsVIS; }
39  bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
40
41  /// ParseSubtargetFeatures - Parses features string setting specified
42  /// subtarget options.  Definition of function is auto generated by tblgen.
43  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
44
45  bool is64Bit() const { return Is64Bit; }
46  std::string getDataLayout() const {
47    const char *p;
48    if (is64Bit()) {
49      p = "E-p:64:64:64-i64:64:64-f64:64:64-f128:128:128-n32:64";
50    } else {
51      p = "E-p:32:32:32-i64:64:64-f64:64:64-f128:64:64-n32";
52    }
53    return std::string(p);
54  }
55
56  /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
57  /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
58  int64_t getStackPointerBias() const {
59    return is64Bit() ? 2047 : 0;
60  }
61
62  /// Given a actual stack size as determined by FrameInfo, this function
63  /// returns adjusted framesize which includes space for register window
64  /// spills and arguments.
65  int getAdjustedFrameSize(int stackSize) const;
66
67};
68
69} // end namespace llvm
70
71#endif
72