strength reduce MMI::MappedLabel to MMI::isLabelDeleted,

and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98031 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 5 deletions

diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 313f910f8f..fff8e83354 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -222,13 +222,14 @@ public:
     LabelIDList[LabelID - 1] = 0;
   }
   
-  /// MappedLabel - Find out the label's final ID.  Zero indicates deletion.
-  /// ID != Mapped ID indicates that the label was folded into another label.
-  unsigned MappedLabel(unsigned LabelID) const {
+  /// isLabelDeleted - Return true if the label was deleted.
+  /// FIXME: This should eventually be eliminated and use the 'is emitted' bit
+  /// on MCSymbol.
+  bool isLabelDeleted(unsigned LabelID) const {
     assert(LabelID <= LabelIDList.size() && "Debug label ID out of range.");
-    return LabelID ? LabelIDList[LabelID - 1] : 0;
+    return LabelID == 0 || LabelIDList[LabelID - 1] == 0;
   }
-
+  
   /// getFrameMoves - Returns a reference to a list of moves done in the current
   /// function's prologue.  Used to construct frame maps for debug and exception
   /// handling comsumers.