Update DebugInfo interface to use metadata, instead of special named llvm.dbg.... global variables, to encode debugging information in llvm IR. This is mostly a mechanical change that tests metadata support very well.

This change speeds up llvm-gcc by more then 6% at "-O0 -g" (measured by compiling InstructionCombining.cpp!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79977 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 9 insertions, 9 deletions

diff --git a/include/llvm/CodeGen/DwarfWriter.h b/include/llvm/CodeGen/DwarfWriter.h
index 9ae7668..3635c4d 100644
--- a/include/llvm/CodeGen/DwarfWriter.h
+++ b/include/llvm/CodeGen/DwarfWriter.h
@@ -33,7 +33,7 @@ class MachineFunction;
 class MachineInstr;
 class Value;
 class Module;
-class GlobalVariable;
+class MDNode;
 class MCAsmInfo;
 class raw_ostream;
 class Instruction;
@@ -88,17 +88,17 @@ public:
   unsigned RecordSourceLine(unsigned Line, unsigned Col, DICompileUnit CU);
 
   /// RecordRegionStart - Indicate the start of a region.
-  unsigned RecordRegionStart(GlobalVariable *V);
+  unsigned RecordRegionStart(MDNode *N);
 
   /// RecordRegionEnd - Indicate the end of a region.
-  unsigned RecordRegionEnd(GlobalVariable *V);
+  unsigned RecordRegionEnd(MDNode *N);
 
   /// getRecordSourceLineCount - Count source lines.
   unsigned getRecordSourceLineCount();
 
   /// RecordVariable - Indicate the declaration of  a local variable.
   ///
-  void RecordVariable(GlobalVariable *GV, unsigned FrameIndex);
+  void RecordVariable(MDNode *N, unsigned FrameIndex);
 
   /// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
   /// be emitted.
diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 51200cb..38c7a5f 100644
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -327,7 +327,7 @@ public:
   /// getOrCreateDebugLocID - Look up the DebugLocTuple index with the given
   /// source file, line, and column. If none currently exists, create a new
   /// DebugLocTuple, and insert it into the DebugIdMap.
-  unsigned getOrCreateDebugLocID(GlobalVariable *CompileUnit,
+  unsigned getOrCreateDebugLocID(MDNode *CompileUnit,
                                  unsigned Line, unsigned Col);
 
   /// getDebugLocTuple - Get the DebugLocTuple for a given DebugLoc object.
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index 5f54981..9d92a08 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -322,7 +322,7 @@ public:
   SDValue getValueType(EVT);
   SDValue getRegister(unsigned Reg, EVT VT);
   SDValue getDbgStopPoint(DebugLoc DL, SDValue Root, 
-                          unsigned Line, unsigned Col, Value *CU);
+                          unsigned Line, unsigned Col, MDNode *CU);
   SDValue getLabel(unsigned Opcode, DebugLoc dl, SDValue Root,
                    unsigned LabelID);
 
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index a5fb08f..0e656a2 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -2015,10 +2015,10 @@ class DbgStopPointSDNode : public SDNode {
   SDUse Chain;
   unsigned Line;
   unsigned Column;
-  Value *CU;
+  MDNode *CU;
   friend class SelectionDAG;
   DbgStopPointSDNode(SDValue ch, unsigned l, unsigned c,
-                     Value *cu)
+                     MDNode *cu)
     : SDNode(ISD::DBG_STOPPOINT, DebugLoc::getUnknownLoc(),
       getSDVTList(MVT::Other)), Line(l), Column(c), CU(cu) {
     InitOperands(&Chain, ch);
@@ -2026,7 +2026,7 @@ class DbgStopPointSDNode : public SDNode {
 public:
   unsigned getLine() const { return Line; }
   unsigned getColumn() const { return Column; }
-  Value *getCompileUnit() const { return CU; }
+  MDNode *getCompileUnit() const { return CU; }
 
   static bool classof(const DbgStopPointSDNode *) { return true; }
   static bool classof(const SDNode *N) {