on darwin<10, fallback to .weak_definition (PPC,X86)

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

diff --git a/lib/CodeGen/AsmPrinter/DwarfUnit.h b/lib/CodeGen/AsmPrinter/DwarfUnit.h
index 852b4c3cc5a9c9ffae000571e05bfc65948e1559..3904ffec61a9d99dbcab4fdaf5ec04b2e4aee30f 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfUnit.h
+++ b/lib/CodeGen/AsmPrinter/DwarfUnit.h
@@ -22,6 +22,7 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/DebugInfo.h"
 #include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSection.h"
 
 namespace llvm {
 
@@ -59,7 +60,7 @@ public:
 //===----------------------------------------------------------------------===//
 /// Unit - This dwarf writer support class manages information associated
 /// with a source file.
-class Unit {
+class DwarfUnit {
 protected:
   /// UniqueID - a numeric ID unique among all CUs in the module
   unsigned UniqueID;
@@ -133,11 +134,20 @@ protected:
   /// A label at the start of the non-dwo section related to this unit.
   MCSymbol *SectionSym;
 
-  Unit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A, DwarfDebug *DW,
-       DwarfFile *DWU);
+  /// The start of the unit within its section.
+  MCSymbol *LabelBegin;
+
+  /// The end of the unit within its section.
+  MCSymbol *LabelEnd;
+
+  /// The label for the start of the range sets for the elements of this unit.
+  MCSymbol *LabelRange;
+
+  DwarfUnit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A,
+            DwarfDebug *DW, DwarfFile *DWU);
 
 public:
-  virtual ~Unit();
+  virtual ~DwarfUnit();
 
   /// Pass in the SectionSym even though we could recreate it in every compile
   /// unit (type units will have actually distinct symbols once they're in
@@ -146,17 +156,38 @@ public:
     assert(!this->Section);
     this->Section = Section;
     this->SectionSym = SectionSym;
+    this->LabelBegin =
+        Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
+    this->LabelEnd =
+        Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
+    this->LabelRange = Asm->GetTempSymbol("gnu_ranges", getUniqueID());
   }
+
   const MCSection *getSection() const {
     assert(Section);
     return Section;
   }
 
-  MCSymbol *getSectionSym() {
+  MCSymbol *getSectionSym() const {
     assert(Section);
     return SectionSym;
   }
 
+  MCSymbol *getLabelBegin() const {
+    assert(Section);
+    return LabelBegin;
+  }
+
+  MCSymbol *getLabelEnd() const {
+    assert(Section);
+    return LabelEnd;
+  }
+
+  MCSymbol *getLabelRange() const {
+    assert(Section);
+    return LabelRange;
+  }
+
   // Accessors.
   unsigned getUniqueID() const { return UniqueID; }
   virtual uint16_t getLanguage() const = 0;
@@ -464,10 +495,10 @@ private:
   void updateAcceleratorTables(DIScope Context, DIType Ty, const DIE *TyDIE);
 };
 
-class CompileUnit : public Unit {
+class DwarfCompileUnit : public DwarfUnit {
 public:
-  CompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A,
-              DwarfDebug *DW, DwarfFile *DWU);
+  DwarfCompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A,
+                   DwarfDebug *DW, DwarfFile *DWU);
 
   /// createGlobalVariableDIE - create global variable DIE.
   void createGlobalVariableDIE(DIGlobalVariable GV);
@@ -479,13 +510,13 @@ public:
   uint16_t getLanguage() const { return getNode().getLanguage(); }
 };
 
-class TypeUnit : public Unit {
+class DwarfTypeUnit : public DwarfUnit {
 private:
   uint16_t Language;
 
 public:
-  TypeUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
-           DwarfDebug *DW, DwarfFile *DWU);
+  DwarfTypeUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
+                DwarfDebug *DW, DwarfFile *DWU);
 
   uint16_t getLanguage() const { return Language; }
 };