1 files changed, 17 insertions, 6 deletions

diff --git a/utils/TableGen/CodeGenInstruction.h b/utils/TableGen/CodeGenInstruction.h
index 95b572d..55d4439 100644
--- a/utils/TableGen/CodeGenInstruction.h
+++ b/utils/TableGen/CodeGenInstruction.h
@@ -152,7 +152,7 @@ namespace llvm {
 
     /// getOperandNamed - Return the index of the operand with the specified
     /// non-empty name.  If the instruction does not have an operand with the
-    /// specified name, throw an exception.
+    /// specified name, abort.
     unsigned getOperandNamed(StringRef Name) const;
 
     /// hasOperandNamed - Query whether the instruction has an operand of the
@@ -162,9 +162,8 @@ namespace llvm {
 
     /// 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.
+    /// This aborts 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);
 
@@ -226,7 +225,10 @@ namespace llvm {
     bool isBarrier;
     bool isCall;
     bool canFoldAsLoad;
-    bool mayLoad, mayStore;
+    bool mayLoad;
+    bool mayLoad_Unset;
+    bool mayStore;
+    bool mayStore_Unset;
     bool isPredicable;
     bool isConvertibleToThreeAddress;
     bool isCommutable;
@@ -238,6 +240,7 @@ namespace llvm {
     bool hasCtrlDep;
     bool isNotDuplicable;
     bool hasSideEffects;
+    bool hasSideEffects_Unset;
     bool neverHasSideEffects;
     bool isAsCheapAsAMove;
     bool hasExtraSrcRegAllocReq;
@@ -245,6 +248,14 @@ namespace llvm {
     bool isCodeGenOnly;
     bool isPseudo;
 
+    /// Are there any undefined flags?
+    bool hasUndefFlags() const {
+      return mayLoad_Unset || mayStore_Unset || hasSideEffects_Unset;
+    }
+
+    // The record used to infer instruction flags, or NULL if no flag values
+    // have been inferred.
+    Record *InferredFrom;
 
     CodeGenInstruction(Record *R);
 
@@ -319,7 +330,7 @@ namespace llvm {
     CodeGenInstAlias(Record *R, CodeGenTarget &T);
 
     bool tryAliasOpMatch(DagInit *Result, unsigned AliasOpNo,
-                         Record *InstOpRec, bool hasSubOps, SMLoc Loc,
+                         Record *InstOpRec, bool hasSubOps, ArrayRef<SMLoc> Loc,
                          CodeGenTarget &T, ResultOperand &ResOp);
   };
 }