LLVM  7.0.0svn
PPCMCExpr.h
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1 //===-- PPCMCExpr.h - PPC specific MC expression classes --------*- 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 #ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
11 #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
12 
13 #include "llvm/MC/MCAsmLayout.h"
14 #include "llvm/MC/MCExpr.h"
15 #include "llvm/MC/MCValue.h"
16 
17 namespace llvm {
18 
19 class PPCMCExpr : public MCTargetExpr {
20 public:
21  enum VariantKind {
30  };
31 
32 private:
33  const VariantKind Kind;
34  const MCExpr *Expr;
35  bool IsDarwin;
36 
37  int64_t evaluateAsInt64(int64_t Value) const;
38 
39  explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin)
40  : Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {}
41 
42 public:
43  /// @name Construction
44  /// @{
45 
46  static const PPCMCExpr *create(VariantKind Kind, const MCExpr *Expr,
47  bool isDarwin, MCContext &Ctx);
48 
49  static const PPCMCExpr *createLo(const MCExpr *Expr,
50  bool isDarwin, MCContext &Ctx) {
51  return create(VK_PPC_LO, Expr, isDarwin, Ctx);
52  }
53 
54  static const PPCMCExpr *createHi(const MCExpr *Expr,
55  bool isDarwin, MCContext &Ctx) {
56  return create(VK_PPC_HI, Expr, isDarwin, Ctx);
57  }
58 
59  static const PPCMCExpr *createHa(const MCExpr *Expr,
60  bool isDarwin, MCContext &Ctx) {
61  return create(VK_PPC_HA, Expr, isDarwin, Ctx);
62  }
63 
64  /// @}
65  /// @name Accessors
66  /// @{
67 
68  /// getOpcode - Get the kind of this expression.
69  VariantKind getKind() const { return Kind; }
70 
71  /// getSubExpr - Get the child of this expression.
72  const MCExpr *getSubExpr() const { return Expr; }
73 
74  /// isDarwinSyntax - True if expression is to be printed using Darwin syntax.
75  bool isDarwinSyntax() const { return IsDarwin; }
76 
77 
78  /// @}
79 
80  void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
82  const MCAsmLayout *Layout,
83  const MCFixup *Fixup) const override;
84  void visitUsedExpr(MCStreamer &Streamer) const override;
85  MCFragment *findAssociatedFragment() const override {
87  }
88 
89  // There are no TLS PPCMCExprs at the moment.
90  void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
91 
92  bool evaluateAsConstant(int64_t &Res) const;
93 
94  static bool classof(const MCExpr *E) {
95  return E->getKind() == MCExpr::Target;
96  }
97 };
98 } // end namespace llvm
99 
100 #endif
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
VariantKind getKind() const
getOpcode - Get the kind of this expression.
Definition: PPCMCExpr.h:69
This represents an "assembler immediate".
Definition: MCValue.h:40
static bool classof(const MCExpr *E)
Definition: PPCMCExpr.h:94
static const PPCMCExpr * create(VariantKind Kind, const MCExpr *Expr, bool isDarwin, MCContext &Ctx)
Definition: PPCMCExpr.cpp:22
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override
Definition: PPCMCExpr.h:90
static const PPCMCExpr * createHi(const MCExpr *Expr, bool isDarwin, MCContext &Ctx)
Definition: PPCMCExpr.h:54
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:66
Encapsulates the layout of an assembly file at a particular point in time.
Definition: MCAsmLayout.h:29
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:36
This is an extension point for target-specific MCExpr subclasses to implement.
Definition: MCExpr.h:571
Context object for machine code objects.
Definition: MCContext.h:60
This class is intended to be used as a base class for asm properties and features specific to the tar...
Definition: MCAsmInfo.h:56
Streaming machine code generation interface.
Definition: MCStreamer.h:181
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
static const PPCMCExpr * createLo(const MCExpr *Expr, bool isDarwin, MCContext &Ctx)
Definition: PPCMCExpr.h:49
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override
Definition: PPCMCExpr.cpp:27
const MCExpr * getSubExpr() const
getSubExpr - Get the child of this expression.
Definition: PPCMCExpr.h:72
PowerPC TLS Dynamic Call Fixup
ExprKind getKind() const
Definition: MCExpr.h:73
bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, const MCFixup *Fixup) const override
Definition: PPCMCExpr.cpp:93
MCFragment * findAssociatedFragment() const override
Definition: PPCMCExpr.h:85
MCFragment * findAssociatedFragment() const
Find the "associated section" for this expression, which is currently defined as the absolute section...
Definition: MCExpr.cpp:792
bool evaluateAsConstant(int64_t &Res) const
Definition: PPCMCExpr.cpp:56
bool isDarwinSyntax() const
isDarwinSyntax - True if expression is to be printed using Darwin syntax.
Definition: PPCMCExpr.h:75
LLVM Value Representation.
Definition: Value.h:73
static const PPCMCExpr * createHa(const MCExpr *Expr, bool isDarwin, MCContext &Ctx)
Definition: PPCMCExpr.h:59
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:44
Target specific expression.
Definition: MCExpr.h:43
void visitUsedExpr(MCStreamer &Streamer) const override
Definition: PPCMCExpr.cpp:148