X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTableGen%2FTGParser.h;h=22a00e5919512609369c4c937d4a32db4acd1610;hb=ac9abe5e992024f905475927ec72c9a19bfcda9c;hp=18aeae22e299ce9d0d7d88881e9fc384083ac25e;hpb=f3744a0cf9f622e0879a80c1fdcb0f6072e5a6c3;p=oota-llvm.git

diff --git a/lib/TableGen/TGParser.h b/lib/TableGen/TGParser.h
index 18aeae22e29..22a00e59195 100644
--- a/lib/TableGen/TGParser.h
+++ b/lib/TableGen/TGParser.h
@@ -11,14 +11,14 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef TGPARSER_H
-#define TGPARSER_H
+#ifndef LLVM_LIB_TABLEGEN_TGPARSER_H
+#define LLVM_LIB_TABLEGEN_TGPARSER_H
 
-#include "llvm/TableGen/Record.h"
 #include "TGLexer.h"
-#include "llvm/TableGen/Error.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/SourceMgr.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include <map>
 
 namespace llvm {
@@ -30,7 +30,7 @@ namespace llvm {
   struct MultiClass;
   struct SubClassReference;
   struct SubMultiClassReference;
-  
+
   struct LetRecord {
     std::string Name;
     std::vector<unsigned> Bits;
@@ -41,37 +41,56 @@ namespace llvm {
       : Name(N), Bits(B), Value(V), Loc(L) {
     }
   };
-  
+
+  /// ForeachLoop - Record the iteration state associated with a for loop.
+  /// This is used to instantiate items in the loop body.
+  struct ForeachLoop {
+    VarInit *IterVar;
+    ListInit *ListValue;
+
+    ForeachLoop(VarInit *IVar, ListInit *LValue)
+      : IterVar(IVar), ListValue(LValue) {}
+  };
+
 class TGParser {
   TGLexer Lex;
   std::vector<std::vector<LetRecord> > LetStack;
-  std::map<std::string, MultiClass*> MultiClasses;
-  
-  /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the 
+  std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses;
+
+  /// Loops - Keep track of any foreach loops we are within.
+  ///
+  typedef std::vector<ForeachLoop> LoopVector;
+  LoopVector Loops;
+
+  /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the
   /// current value.
   MultiClass *CurMultiClass;
 
   // Record tracker
   RecordKeeper &Records;
 
+  unsigned AnonCounter;
+
   // A "named boolean" indicating how to parse identifiers.  Usually
   // identifiers map to some existing object but in special cases
   // (e.g. parsing def names) no such object exists yet because we are
   // in the middle of creating in.  For those situations, allow the
   // parser to ignore missing object errors.
   enum IDParseMode {
-    ParseValueMode, // We are parsing a value we expect to look up.
-    ParseNameMode // We are parsing a name of an object that does not yet exist.
+    ParseValueMode,   // We are parsing a value we expect to look up.
+    ParseNameMode,    // We are parsing a name of an object that does not yet
+                      // exist.
+    ParseForeachMode  // We are parsing a foreach init.
   };
 
 public:
-  TGParser(SourceMgr &SrcMgr, RecordKeeper &records) : 
-    Lex(SrcMgr), CurMultiClass(0), Records(records) {}
-  
+  TGParser(SourceMgr &SrcMgr, RecordKeeper &records)
+      : Lex(SrcMgr), CurMultiClass(nullptr), Records(records), AnonCounter(0) {}
+
   /// ParseFile - Main entrypoint for parsing a tblgen file.  These parser
   /// routines return true on error, or false on success.
   bool ParseFile();
-  
+
   bool Error(SMLoc L, const Twine &Msg) const {
     PrintError(L, Msg);
     return true;
@@ -79,14 +98,15 @@ public:
   bool TokError(const Twine &Msg) const {
     return Error(Lex.getLoc(), Msg);
   }
-  const std::vector<std::string> &getDependencies() const {
+  const TGLexer::DependenciesMapTy &getDependencies() const {
     return Lex.getDependencies();
   }
+
 private:  // Semantic analysis methods.
   bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV);
-  bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName, 
+  bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName,
                 const std::vector<unsigned> &BitList, Init *V);
-  bool SetValue(Record *TheRec, SMLoc Loc, const std::string &ValName, 
+  bool SetValue(Record *TheRec, SMLoc Loc, const std::string &ValName,
                 const std::vector<unsigned> &BitList, Init *V) {
     return SetValue(TheRec, Loc, StringInit::get(ValName), BitList, V);
   }
@@ -94,15 +114,31 @@ private:  // Semantic analysis methods.
   bool AddSubMultiClass(MultiClass *CurMC,
                         SubMultiClassReference &SubMultiClass);
 
+  std::string GetNewAnonymousName();
+
+  // IterRecord: Map an iterator name to a value.
+  struct IterRecord {
+    VarInit *IterVar;
+    Init *IterValue;
+    IterRecord(VarInit *Var, Init *Val) : IterVar(Var), IterValue(Val) {}
+  };
+
+  // IterSet: The set of all iterator values at some point in the
+  // iteration space.
+  typedef std::vector<IterRecord> IterSet;
+
+  bool ProcessForeachDefs(Record *CurRec, SMLoc Loc);
+  bool ProcessForeachDefs(Record *CurRec, SMLoc Loc, IterSet &IterVals);
+
 private:  // Parser methods.
-  bool ParseObjectList(MultiClass *MC = 0);
+  bool ParseObjectList(MultiClass *MC = nullptr);
   bool ParseObject(MultiClass *MC);
   bool ParseClass();
   bool ParseMultiClass();
   Record *InstantiateMulticlassDef(MultiClass &MC,
                                    Record *DefProto,
-                                   const std::string &DefmPrefix,
-                                   SMLoc DefmPrefixLoc);
+                                   Init *&DefmPrefix,
+                                   SMRange DefmPrefixRange);
   bool ResolveMulticlassDefArgs(MultiClass &MC,
                                 Record *DefProto,
                                 SMLoc DefmPrefixLoc,
@@ -116,6 +152,7 @@ private:  // Parser methods.
                             SMLoc DefmPrefixLoc);
   bool ParseDefm(MultiClass *CurMultiClass);
   bool ParseDef(MultiClass *CurMultiClass);
+  bool ParseForeach(MultiClass *CurMultiClass);
   bool ParseTopLevelLet(MultiClass *CurMultiClass);
   std::vector<LetRecord> ParseLetList();
 
@@ -125,32 +162,33 @@ private:  // Parser methods.
 
   bool ParseTemplateArgList(Record *CurRec);
   Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs);
+  VarInit *ParseForeachDeclaration(ListInit *&ForeachListValue);
 
   SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm);
   SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC);
 
-  Init *ParseIDValue(Record *CurRec, IDParseMode Mode = ParseValueMode);
   Init *ParseIDValue(Record *CurRec, const std::string &Name, SMLoc NameLoc,
                      IDParseMode Mode = ParseValueMode);
-  Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = 0,
+  Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = nullptr,
                          IDParseMode Mode = ParseValueMode);
-  Init *ParseValue(Record *CurRec, RecTy *ItemType = 0,
+  Init *ParseValue(Record *CurRec, RecTy *ItemType = nullptr,
                    IDParseMode Mode = ParseValueMode);
-  std::vector<Init*> ParseValueList(Record *CurRec, Record *ArgsRec = 0, RecTy *EltTy = 0);
+  std::vector<Init*> ParseValueList(Record *CurRec, Record *ArgsRec = nullptr,
+                                    RecTy *EltTy = nullptr);
   std::vector<std::pair<llvm::Init*, std::string> > ParseDagArgList(Record *);
   bool ParseOptionalRangeList(std::vector<unsigned> &Ranges);
   bool ParseOptionalBitList(std::vector<unsigned> &Ranges);
   std::vector<unsigned> ParseRangeList();
   bool ParseRangePiece(std::vector<unsigned> &Ranges);
   RecTy *ParseType();
-  Init *ParseOperation(Record *CurRec);
+  Init *ParseOperation(Record *CurRec, RecTy *ItemType);
   RecTy *ParseOperatorType();
-  std::string ParseObjectName();
+  Init *ParseObjectName(MultiClass *CurMultiClass);
   Record *ParseClassID();
   MultiClass *ParseMultiClassID();
-  Record *ParseDefmID();
+  bool ApplyLetStack(Record *CurRec);
 };
-  
+
 } // end namespace llvm
 
 #endif