source: icGREP/icgrep-devel/llvm-3.6.1.src/include/llvm/Target/TargetCallingConv.h @ 4664

Last change on this file since 4664 was 4664, checked in by cameron, 4 years ago

Upgrade LLVM to 3.6.1

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1//===-- llvm/Target/TargetCallingConv.h - Calling Convention ----*- 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 defines types for working with calling-convention information.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_TARGET_TARGETCALLINGCONV_H
15#define LLVM_TARGET_TARGETCALLINGCONV_H
16
17#include "llvm/CodeGen/ValueTypes.h"
18#include "llvm/Support/DataTypes.h"
19#include "llvm/Support/MathExtras.h"
20#include <string>
21
22namespace llvm {
23
24namespace ISD {
25  struct ArgFlagsTy {
26  private:
27    static const uint64_t NoFlagSet      = 0ULL;
28    static const uint64_t ZExt           = 1ULL<<0;  ///< Zero extended
29    static const uint64_t ZExtOffs       = 0;
30    static const uint64_t SExt           = 1ULL<<1;  ///< Sign extended
31    static const uint64_t SExtOffs       = 1;
32    static const uint64_t InReg          = 1ULL<<2;  ///< Passed in register
33    static const uint64_t InRegOffs      = 2;
34    static const uint64_t SRet           = 1ULL<<3;  ///< Hidden struct-ret ptr
35    static const uint64_t SRetOffs       = 3;
36    static const uint64_t ByVal          = 1ULL<<4;  ///< Struct passed by value
37    static const uint64_t ByValOffs      = 4;
38    static const uint64_t Nest           = 1ULL<<5;  ///< Nested fn static chain
39    static const uint64_t NestOffs       = 5;
40    static const uint64_t Returned       = 1ULL<<6;  ///< Always returned
41    static const uint64_t ReturnedOffs   = 6;
42    static const uint64_t ByValAlign     = 0xFULL<<7; ///< Struct alignment
43    static const uint64_t ByValAlignOffs = 7;
44    static const uint64_t Split          = 1ULL<<11;
45    static const uint64_t SplitOffs      = 11;
46    static const uint64_t InAlloca       = 1ULL<<12; ///< Passed with inalloca
47    static const uint64_t InAllocaOffs   = 12;
48    static const uint64_t OrigAlign      = 0x1FULL<<27;
49    static const uint64_t OrigAlignOffs  = 27;
50    static const uint64_t ByValSize      = 0x3fffffffULL<<32; ///< Struct size
51    static const uint64_t ByValSizeOffs  = 32;
52    static const uint64_t InConsecutiveRegsLast      = 0x1ULL<<62; ///< Struct size
53    static const uint64_t InConsecutiveRegsLastOffs  = 62;
54    static const uint64_t InConsecutiveRegs      = 0x1ULL<<63; ///< Struct size
55    static const uint64_t InConsecutiveRegsOffs  = 63;
56
57    static const uint64_t One            = 1ULL; ///< 1 of this type, for shifts
58
59    uint64_t Flags;
60  public:
61    ArgFlagsTy() : Flags(0) { }
62
63    bool isZExt()      const { return Flags & ZExt; }
64    void setZExt()     { Flags |= One << ZExtOffs; }
65
66    bool isSExt()      const { return Flags & SExt; }
67    void setSExt()     { Flags |= One << SExtOffs; }
68
69    bool isInReg()     const { return Flags & InReg; }
70    void setInReg()    { Flags |= One << InRegOffs; }
71
72    bool isSRet()      const { return Flags & SRet; }
73    void setSRet()     { Flags |= One << SRetOffs; }
74
75    bool isByVal()     const { return Flags & ByVal; }
76    void setByVal()    { Flags |= One << ByValOffs; }
77
78    bool isInAlloca()  const { return Flags & InAlloca; }
79    void setInAlloca() { Flags |= One << InAllocaOffs; }
80
81    bool isNest()      const { return Flags & Nest; }
82    void setNest()     { Flags |= One << NestOffs; }
83
84    bool isReturned()  const { return Flags & Returned; }
85    void setReturned() { Flags |= One << ReturnedOffs; }
86
87    bool isInConsecutiveRegs()  const { return Flags & InConsecutiveRegs; }
88    void setInConsecutiveRegs() { Flags |= One << InConsecutiveRegsOffs; }
89
90    bool isInConsecutiveRegsLast()  const { return Flags & InConsecutiveRegsLast; }
91    void setInConsecutiveRegsLast() { Flags |= One << InConsecutiveRegsLastOffs; }
92
93    unsigned getByValAlign() const {
94      return (unsigned)
95        ((One << ((Flags & ByValAlign) >> ByValAlignOffs)) / 2);
96    }
97    void setByValAlign(unsigned A) {
98      Flags = (Flags & ~ByValAlign) |
99        (uint64_t(Log2_32(A) + 1) << ByValAlignOffs);
100    }
101
102    bool isSplit()   const { return Flags & Split; }
103    void setSplit()  { Flags |= One << SplitOffs; }
104
105    unsigned getOrigAlign() const {
106      return (unsigned)
107        ((One << ((Flags & OrigAlign) >> OrigAlignOffs)) / 2);
108    }
109    void setOrigAlign(unsigned A) {
110      Flags = (Flags & ~OrigAlign) |
111        (uint64_t(Log2_32(A) + 1) << OrigAlignOffs);
112    }
113
114    unsigned getByValSize() const {
115      return (unsigned)((Flags & ByValSize) >> ByValSizeOffs);
116    }
117    void setByValSize(unsigned S) {
118      Flags = (Flags & ~ByValSize) | (uint64_t(S) << ByValSizeOffs);
119    }
120
121    /// getRawBits - Represent the flags as a bunch of bits.
122    uint64_t getRawBits() const { return Flags; }
123  };
124
125  /// InputArg - This struct carries flags and type information about a
126  /// single incoming (formal) argument or incoming (from the perspective
127  /// of the caller) return value virtual register.
128  ///
129  struct InputArg {
130    ArgFlagsTy Flags;
131    MVT VT;
132    EVT ArgVT;
133    bool Used;
134
135    /// Index original Function's argument.
136    unsigned OrigArgIndex;
137    /// Sentinel value for implicit machine-level input arguments.
138    static const unsigned NoArgIndex = UINT_MAX;
139
140    /// Offset in bytes of current input value relative to the beginning of
141    /// original argument. E.g. if argument was splitted into four 32 bit
142    /// registers, we got 4 InputArgs with PartOffsets 0, 4, 8 and 12.
143    unsigned PartOffset;
144
145    InputArg() : VT(MVT::Other), Used(false) {}
146    InputArg(ArgFlagsTy flags, EVT vt, EVT argvt, bool used,
147             unsigned origIdx, unsigned partOffs)
148      : Flags(flags), Used(used), OrigArgIndex(origIdx), PartOffset(partOffs) {
149      VT = vt.getSimpleVT();
150      ArgVT = argvt;
151    }
152
153    bool isOrigArg() const {
154      return OrigArgIndex != NoArgIndex;
155    }
156
157    unsigned getOrigArgIndex() const {
158      assert(OrigArgIndex != NoArgIndex && "Implicit machine-level argument");
159      return OrigArgIndex;
160    }
161  };
162
163  /// OutputArg - This struct carries flags and a value for a
164  /// single outgoing (actual) argument or outgoing (from the perspective
165  /// of the caller) return value virtual register.
166  ///
167  struct OutputArg {
168    ArgFlagsTy Flags;
169    MVT VT;
170    EVT ArgVT;
171
172    /// IsFixed - Is this a "fixed" value, ie not passed through a vararg "...".
173    bool IsFixed;
174
175    /// Index original Function's argument.
176    unsigned OrigArgIndex;
177
178    /// Offset in bytes of current output value relative to the beginning of
179    /// original argument. E.g. if argument was splitted into four 32 bit
180    /// registers, we got 4 OutputArgs with PartOffsets 0, 4, 8 and 12.
181    unsigned PartOffset;
182
183    OutputArg() : IsFixed(false) {}
184    OutputArg(ArgFlagsTy flags, EVT vt, EVT argvt, bool isfixed,
185              unsigned origIdx, unsigned partOffs)
186      : Flags(flags), IsFixed(isfixed), OrigArgIndex(origIdx),
187        PartOffset(partOffs) {
188      VT = vt.getSimpleVT();
189      ArgVT = argvt;
190    }
191  };
192}
193
194} // end llvm namespace
195
196#endif
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