[X86][inline asm] support even directive

[oota-llvm.git] / include / llvm / MC / MCTargetAsmParser.h

diff --git a/include/llvm/MC/MCTargetAsmParser.h b/include/llvm/MC/MCTargetAsmParser.h
index cf9230758f2f278f07340faca85e135af211f080..f8bf4d09f5a14dd32b29e71fd1e27e2e21dd19a5 100644 (file)
--- a/include/llvm/MC/MCTargetAsmParser.h
+++ b/include/llvm/MC/MCTargetAsmParser.h
@@ -13,7 +13,6 @@
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCParser/MCAsmParserExtension.h"
 #include "llvm/MC/MCTargetOptions.h"
-
 #include <memory>
 
 namespace llvm {
@@ -21,6 +20,7 @@ class AsmToken;
 class MCInst;
 class MCParsedAsmOperand;
 class MCStreamer;
+class MCSubtargetInfo;
 class SMLoc;
 class StringRef;
 template <typename T> class SmallVectorImpl;
@@ -30,6 +30,7 @@ typedef SmallVectorImpl<std::unique_ptr<MCParsedAsmOperand>> OperandVector;
 enum AsmRewriteKind {
   AOK_Delete = 0,     // Rewrite should be ignored.
   AOK_Align,          // Rewrite align as .align.
+  AOK_EVEN,           // Rewrite even as .even.
   AOK_DotOperator,    // Rewrite a dot operator expression as an immediate.
                       // E.g., [eax].foo.bar -> [eax].8
   AOK_Emit,           // Rewrite _emit as .byte.
@@ -45,6 +46,7 @@ enum AsmRewriteKind {
 const char AsmRewritePrecedence [] = {
   0, // AOK_Delete
   2, // AOK_Align
+  2, // AOK_EVEN
   2, // AOK_DotOperator
   2, // AOK_Emit
   4, // AOK_Imm
@@ -76,8 +78,6 @@ struct ParseInstructionInfo {
   ParseInstructionInfo() : AsmRewrites(nullptr) {}
   ParseInstructionInfo(SmallVectorImpl<AsmRewrite> *rewrites)
     : AsmRewrites(rewrites) {}
-
-  ~ParseInstructionInfo() {}
 };
 
 /// MCTargetAsmParser - Generic interface to target specific assembly parsers.
@@ -92,10 +92,13 @@ public:
   };
 
 private:
-  MCTargetAsmParser(const MCTargetAsmParser &) LLVM_DELETED_FUNCTION;
-  void operator=(const MCTargetAsmParser &) LLVM_DELETED_FUNCTION;
+  MCTargetAsmParser(const MCTargetAsmParser &) = delete;
+  void operator=(const MCTargetAsmParser &) = delete;
 protected: // Can only create subclasses.
-  MCTargetAsmParser();
+  MCTargetAsmParser(MCTargetOptions const &, const MCSubtargetInfo &STI);
+
+  /// Create a copy of STI and return a non-const reference to it.
+  MCSubtargetInfo &copySTI();
 
   /// AvailableFeatures - The current set of available features.
   uint64_t AvailableFeatures;
@@ -110,8 +113,13 @@ protected: // Can only create subclasses.
   /// Set of options which affects instrumentation of inline assembly.
   MCTargetOptions MCOptions;
 
+  /// Current STI.
+  const MCSubtargetInfo *STI;
+
 public:
-  virtual ~MCTargetAsmParser();
+  ~MCTargetAsmParser() override;
+
+  const MCSubtargetInfo &getSTI() const;
 
   uint64_t getAvailableFeatures() const { return AvailableFeatures; }
   void setAvailableFeatures(uint64_t Value) { AvailableFeatures = Value; }
@@ -146,6 +154,10 @@ public:
   /// \return True on failure.
   virtual bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
                                 SMLoc NameLoc, OperandVector &Operands) = 0;
+  virtual bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
+                                AsmToken Token, OperandVector &Operands) {
+    return ParseInstruction(Info, Name, Token.getLoc(), Operands);
+  }
 
   /// ParseDirective - Parse a target specific assembler directive
   ///
@@ -195,13 +207,18 @@ public:
   virtual void convertToMapAndConstraints(unsigned Kind,
                                           const OperandVector &Operands) = 0;
 
+  // Return whether this parser uses assignment statements with equals tokens
+  virtual bool equalIsAsmAssignment() { return true; };
+  // Return whether this start of statement identifier is a label
+  virtual bool isLabel(AsmToken &Token) { return true; };
+
   virtual const MCExpr *applyModifierToExpr(const MCExpr *E,
                                             MCSymbolRefExpr::VariantKind,
                                             MCContext &Ctx) {
     return nullptr;
   }
 
-  virtual void onLabelParsed(MCSymbol *Symbol) { };
+  virtual void onLabelParsed(MCSymbol *Symbol) { }
 };
 
 } // End llvm namespace