Add support to emit dwarf ranges.

[oota-llvm.git] / lib / CodeGen / AsmPrinter / DwarfDebug.h

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 006ee2d755885e16c4d0602dd4dc10f112c4ee2e..bfd6f48d2e3ddb7da74c6cec1b104e172af1aada 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -173,24 +173,14 @@ class DwarfDebug {
   /// (at the end of the module) as DW_AT_inline.
   SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
 
+  /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
+  /// need DW_AT_containing_type attribute. This attribute points to a DIE that
+  /// corresponds to the MDNode mapped with the subprogram DIE.
   DenseMap<DIE *, MDNode *> ContainingTypeMap;
 
-  /// AbstractSubprogramDIEs - Collection of abstruct subprogram DIEs.
-  SmallPtrSet<DIE *, 4> AbstractSubprogramDIEs;
-
-  /// TopLevelDIEs - Collection of top level DIEs. 
-  SmallPtrSet<DIE *, 4> TopLevelDIEs;
-  SmallVector<DIE *, 4> TopLevelDIEsVector;
-
   typedef SmallVector<DbgScope *, 2> ScopeVector;
-  typedef DenseMap<const MachineInstr *, ScopeVector>
-    InsnToDbgScopeMapTy;
-
-  /// DbgScopeBeginMap - Maps instruction with a list of DbgScopes it starts.
-  InsnToDbgScopeMapTy DbgScopeBeginMap;
-
-  /// DbgScopeEndMap - Maps instruction with a list DbgScopes it ends.
-  InsnToDbgScopeMapTy DbgScopeEndMap;
+  SmallPtrSet<const MachineInstr *, 8> InsnsBeginScopeSet;
+  SmallPtrSet<const MachineInstr *, 8> InsnsEndScopeSet;
 
   /// InlineInfo - Keep track of inlined functions and their location.  This
   /// information is used to populate debug_inlined section.
@@ -198,14 +188,20 @@ class DwarfDebug {
   DenseMap<MDNode*, SmallVector<InlineInfoLabels, 4> > InlineInfo;
   SmallVector<MDNode *, 4> InlinedSPNodes;
 
-  /// CompileUnitOffsets - A vector of the offsets of the compile units. This is
-  /// used when calculating the "origin" of a concrete instance of an inlined
-  /// function.
-  DenseMap<CompileUnit *, unsigned> CompileUnitOffsets;
+  /// InsnBeforeLabelMap - Maps instruction with label emitted before 
+  /// instruction.
+  DenseMap<const MachineInstr *, MCSymbol *> InsnBeforeLabelMap;
+
+  /// InsnAfterLabelMap - Maps instruction with label emitted after
+  /// instruction.
+  DenseMap<const MachineInstr *, MCSymbol *> InsnAfterLabelMap;
+
+  SmallVector<const MCSymbol *, 8> DebugRangeSymbols;
 
   /// Previous instruction's location information. This is used to determine
   /// label location to indicate scope boundries in dwarf debug info.
   DebugLoc PrevInstLoc;
+  MCSymbol *PrevLabel;
 
   struct FunctionDebugFrameInfo {
     unsigned Number;
@@ -221,7 +217,7 @@ class DwarfDebug {
   // the beginning of each supported dwarf section.  These are used to form
   // section offsets and are created by EmitSectionLabels.
   MCSymbol *DwarfFrameSectionSym, *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
-  MCSymbol *DwarfStrSectionSym, *TextSectionSym;
+  MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
   
 private:
   
@@ -527,6 +523,10 @@ private:
     return Lines.size();
   }
   
+  /// identifyScopeMarkers() - Indentify instructions that are marking
+  /// beginning of or end of a scope.
+  void identifyScopeMarkers();
+
   /// extractScopeInformation - Scan machine instructions in this function
   /// and collect DbgScopes. Return true, if atleast one scope was found.
   bool extractScopeInformation();