X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FMC%2FMCExpr.h;h=c017fef8b5a59f54c164d49daa202001299721fa;hb=71706a01b0cd04378575f953b49b1289c3e8de9a;hp=f28adfa865265a918f55398173a9b60b435e7a05;hpb=1c509556eeaa0d1bf680551acc52ce44957c592f;p=oota-llvm.git

diff --git a/include/llvm/MC/MCExpr.h b/include/llvm/MC/MCExpr.h
index f28adfa8652..c017fef8b5a 100644
--- a/include/llvm/MC/MCExpr.h
+++ b/include/llvm/MC/MCExpr.h
@@ -19,8 +19,10 @@ class MCAsmInfo;
 class MCAsmLayout;
 class MCAssembler;
 class MCContext;
+class MCFixup;
 class MCSection;
 class MCSectionData;
+class MCStreamer;
 class MCSymbol;
 class MCValue;
 class raw_ostream;
@@ -42,17 +44,23 @@ public:
 private:
   ExprKind Kind;
 
-  MCExpr(const MCExpr&) LLVM_DELETED_FUNCTION;
-  void operator=(const MCExpr&) LLVM_DELETED_FUNCTION;
+  MCExpr(const MCExpr&) = delete;
+  void operator=(const MCExpr&) = delete;
 
   bool EvaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm,
                           const MCAsmLayout *Layout,
                           const SectionAddrMap *Addrs) const;
+
+  bool evaluateAsAbsolute(int64_t &Res, const MCAssembler *Asm,
+                          const MCAsmLayout *Layout,
+                          const SectionAddrMap *Addrs, bool InSet) const;
+
 protected:
   explicit MCExpr(ExprKind _Kind) : Kind(_Kind) {}
 
   bool EvaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm,
                                  const MCAsmLayout *Layout,
+                                 const MCFixup *Fixup,
                                  const SectionAddrMap *Addrs, bool InSet,
                                  bool ForceVarExpansion) const;
 
@@ -86,13 +94,17 @@ public:
   bool EvaluateAsAbsolute(int64_t &Res, const MCAssembler &Asm) const;
   bool EvaluateAsAbsolute(int64_t &Res, const MCAsmLayout &Layout) const;
 
+  int64_t evaluateKnownAbsolute(const MCAsmLayout &Layout) const;
+
   /// EvaluateAsRelocatable - Try to evaluate the expression to a relocatable
   /// value, i.e. an expression of the fixed form (a - b + constant).
   ///
   /// @param Res - The relocatable value, if evaluation succeeds.
   /// @param Layout - The assembler layout object to use for evaluating values.
+  /// @param Fixup - The Fixup object if available.
   /// @result - True on success.
-  bool EvaluateAsRelocatable(MCValue &Res, const MCAsmLayout *Layout) const;
+  bool EvaluateAsRelocatable(MCValue &Res, const MCAsmLayout *Layout,
+                             const MCFixup *Fixup) const;
 
   /// \brief Try to evaluate the expression to the form (a - b + constant) where
   /// neither a nor b are variables.
@@ -100,7 +112,8 @@ public:
   /// This is a more aggressive variant of EvaluateAsRelocatable. The intended
   /// use is for when relocations are not available, like the symbol value in
   /// the symbol table.
-  bool EvaluateAsValue(MCValue &Res, const MCAsmLayout *Layout) const;
+  bool EvaluateAsValue(MCValue &Res, const MCAsmLayout *Layout,
+                       const MCFixup *Fixup) const;
 
   /// FindAssociatedSection - Find the "associated section" for this expression,
   /// which is currently defined as the absolute section for constants, or
@@ -175,12 +188,14 @@ public:
     VK_GOTPAGE,
     VK_GOTPAGEOFF,
     VK_SECREL,
+    VK_SIZE,      // symbol@SIZE
     VK_WEAKREF,   // The link between the symbols in .weakref foo, bar
 
     VK_ARM_NONE,
     VK_ARM_TARGET1,
     VK_ARM_TARGET2,
     VK_ARM_PREL31,
+    VK_ARM_SBREL,          // symbol(sbrel)
     VK_ARM_TLSLDO,         // symbol(tlsldo)
     VK_ARM_TLSCALL,        // symbol(tlscall)
     VK_ARM_TLSDESC,        // symbol(tlsdesc)
@@ -237,6 +252,7 @@ public:
     VK_PPC_GOT_TLSLD_HI,   // symbol@got@tlsld@h
     VK_PPC_GOT_TLSLD_HA,   // symbol@got@tlsld@ha
     VK_PPC_TLSLD,          // symbol@tlsld
+    VK_PPC_LOCAL,          // symbol@local
 
     VK_Mips_GPREL,
     VK_Mips_GOT_CALL,
@@ -262,26 +278,27 @@ public:
     VK_Mips_GOT_LO16,
     VK_Mips_CALL_HI16,
     VK_Mips_CALL_LO16,
+    VK_Mips_PCREL_HI16,
+    VK_Mips_PCREL_LO16,
 
     VK_COFF_IMGREL32 // symbol@imgrel (image-relative)
   };
 
 private:
-  /// The symbol being referenced.
-  const MCSymbol *Symbol;
-
   /// The symbol reference modifier.
-  const VariantKind Kind;
+  const unsigned Kind : 16;
 
-  /// MCAsmInfo that is used to print symbol variants correctly.
-  const MCAsmInfo *MAI;
+  /// Specifies how the variant kind should be printed.
+  const unsigned UseParensForSymbolVariant : 1;
 
-  explicit MCSymbolRefExpr(const MCSymbol *_Symbol, VariantKind _Kind,
-                           const MCAsmInfo *_MAI)
-    : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol), Kind(_Kind), MAI(_MAI) {
-    assert(Symbol);
-    assert(MAI);
-  }
+  // FIXME: Remove this bit.
+  const unsigned HasSubsectionsViaSymbols : 1;
+
+  /// The symbol being referenced.
+  const MCSymbol *Symbol;
+
+  explicit MCSymbolRefExpr(const MCSymbol *Symbol, VariantKind Kind,
+                           const MCAsmInfo *MAI);
 
 public:
   /// @name Construction
@@ -301,9 +318,12 @@ public:
   /// @{
 
   const MCSymbol &getSymbol() const { return *Symbol; }
-  const MCAsmInfo &getMCAsmInfo() const { return *MAI; }
 
-  VariantKind getKind() const { return Kind; }
+  VariantKind getKind() const { return static_cast<VariantKind>(Kind); }
+
+  void printVariantKind(raw_ostream &OS) const;
+
+  bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
 
   /// @}
   /// @name Static Utility Functions
@@ -521,8 +541,9 @@ public:
 
   virtual void PrintImpl(raw_ostream &OS) const = 0;
   virtual bool EvaluateAsRelocatableImpl(MCValue &Res,
-                                         const MCAsmLayout *Layout) const = 0;
-  virtual void AddValueSymbols(MCAssembler *) const = 0;
+                                         const MCAsmLayout *Layout,
+                                         const MCFixup *Fixup) const = 0;
+  virtual void visitUsedExpr(MCStreamer& Streamer) const = 0;
   virtual const MCSection *FindAssociatedSection() const = 0;
 
   virtual void fixELFSymbolsInTLSFixups(MCAssembler &) const = 0;