X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=utils%2FTableGen%2FCodeGenInstruction.h;h=f4afd5e45ba3ead9e5d63dbfe338a1dd9b4808e1;hb=b4ced5a3c488d58d98381c8562123640fdb6177a;hp=c5b4c3cf7299a3cac39c3a6ad4a3a1f5e7a0104c;hpb=e2ba8975883874633a1035c245af3b948b940b25;p=oota-llvm.git

diff --git a/utils/TableGen/CodeGenInstruction.h b/utils/TableGen/CodeGenInstruction.h
index c5b4c3cf729..f4afd5e45ba 100644
--- a/utils/TableGen/CodeGenInstruction.h
+++ b/utils/TableGen/CodeGenInstruction.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -23,15 +23,15 @@ namespace llvm {
   class Record;
   class DagInit;
 
-  struct CodeGenInstruction {
+  class CodeGenInstruction {
+  public:
     Record *TheDef;            // The actual record defining this instruction.
-    std::string Name;          // Contents of the 'Name' field.
     std::string Namespace;     // The namespace the instruction is in.
 
     /// AsmString - The format string used to emit a .s file for the
     /// instruction.
     std::string AsmString;
-
+    
     /// OperandInfo - The information we keep track of for each operand in the
     /// operand list for a tablegen instruction.
     struct OperandInfo {
@@ -56,9 +56,18 @@ namespace llvm {
       unsigned MIOperandNo;
       unsigned MINumOperands;   // The number of operands.
 
+      /// DoNotEncode - Bools are set to true in this vector for each operand in
+      /// the DisableEncoding list.  These should not be emitted by the code
+      /// emitter.
+      std::vector<bool> DoNotEncode;
+      
       /// MIOperandInfo - Default MI operand type. Note an operand may be made
       /// up of multiple MI operands.
       DagInit *MIOperandInfo;
+      
+      /// Constraint info for this operand.  This operand can have pieces, so we
+      /// track constraint info for each.
+      std::vector<std::string> Constraints;
 
       OperandInfo(Record *R, const std::string &N, const std::string &PMN, 
                   unsigned MION, unsigned MINO, DagInit *MIOI)
@@ -66,34 +75,71 @@ namespace llvm {
           MINumOperands(MINO), MIOperandInfo(MIOI) {}
     };
 
+    /// NumDefs - Number of def operands declared.
+    ///
+    unsigned NumDefs;
+
     /// OperandList - The list of declared operands, along with their declared
     /// type (which is a record).
     std::vector<OperandInfo> OperandList;
 
-    /// ConstraintStr - The operand constraints string.
-    ///
-    std::string ConstraintStr;
-
-    /// ConstraintsList - List of constraints, encoded into one unsigned int per
-    /// operand.
-    std::vector<unsigned> ConstraintsList;
-
     // Various boolean values we track for the instruction.
     bool isReturn;
     bool isBranch;
+    bool isIndirectBranch;
     bool isBarrier;
     bool isCall;
-    bool isLoad;
-    bool isStore;
-    bool isTwoAddress;
+    bool canFoldAsLoad;
+    bool mayLoad, mayStore;
+    bool isPredicable;
     bool isConvertibleToThreeAddress;
     bool isCommutable;
     bool isTerminator;
+    bool isReMaterializable;
     bool hasDelaySlot;
     bool usesCustomDAGSchedInserter;
-    bool hasVariableNumberOfOperands;
+    bool isVariadic;
     bool hasCtrlDep;
-    bool noResults;
+    bool isNotDuplicable;
+    bool hasOptionalDef;
+    bool hasSideEffects;
+    bool mayHaveSideEffects;
+    bool neverHasSideEffects;
+    bool isAsCheapAsAMove;
+    
+    /// ParseOperandName - Parse an operand name like "$foo" or "$foo.bar",
+    /// where $foo is a whole operand and $foo.bar refers to a suboperand.
+    /// This throws an exception if the name is invalid.  If AllowWholeOp is
+    /// true, references to operands with suboperands are allowed, otherwise
+    /// not.
+    std::pair<unsigned,unsigned> ParseOperandName(const std::string &Op,
+                                                  bool AllowWholeOp = true);
+    
+    /// getFlattenedOperandNumber - Flatten a operand/suboperand pair into a
+    /// flat machineinstr operand #.
+    unsigned getFlattenedOperandNumber(std::pair<unsigned,unsigned> Op) const {
+      return OperandList[Op.first].MIOperandNo + Op.second;
+    }
+    
+    /// getSubOperandNumber - Unflatten a operand number into an
+    /// operand/suboperand pair.
+    std::pair<unsigned,unsigned> getSubOperandNumber(unsigned Op) const {
+      for (unsigned i = 0; ; ++i) {
+        assert(i < OperandList.size() && "Invalid flat operand #");
+        if (OperandList[i].MIOperandNo+OperandList[i].MINumOperands > Op)
+          return std::make_pair(i, Op-OperandList[i].MIOperandNo);
+      }
+    }
+    
+    
+    /// isFlatOperandNotEmitted - Return true if the specified flat operand #
+    /// should not be emitted with the code emitter.
+    bool isFlatOperandNotEmitted(unsigned FlatOpNo) const {
+      std::pair<unsigned,unsigned> Op = getSubOperandNumber(FlatOpNo);
+      if (OperandList[Op.first].DoNotEncode.size() > Op.second)
+        return OperandList[Op.first].DoNotEncode[Op.second];
+      return false;
+    }
 
     CodeGenInstruction(Record *R, const std::string &AsmStr);