Add data structure to define and track debug location during codegen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63008 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 835c8a37c5..1397b84677 100644
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -19,6 +19,7 @@
 #define LLVM_CODEGEN_MACHINEFUNCTION_H
 
 #include "llvm/ADT/ilist.h"
+#include "llvm/CodeGen/DebugLoc.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/Support/Annotation.h"
 #include "llvm/Support/Allocator.h"
@@ -27,11 +28,11 @@
 namespace llvm {
 
 class Function;
-class TargetMachine;
 class MachineRegisterInfo;
 class MachineFrameInfo;
 class MachineConstantPool;
 class MachineJumpTableInfo;
+class TargetMachine;
 
 template <>
 struct ilist_traits<MachineBasicBlock>
@@ -94,6 +95,9 @@ class MachineFunction : private Annotation {
   typedef ilist<MachineBasicBlock> BasicBlockListType;
   BasicBlockListType BasicBlocks;
 
+  // Tracks debug locations.
+  DebugLocTracker DebugLocInfo;
+
 public:
   MachineFunction(const Function *Fn, const TargetMachine &TM);
   ~MachineFunction();
@@ -302,6 +306,15 @@ public:
   /// DeleteMachineBasicBlock - Delete the given MachineBasicBlock.
   ///
   void DeleteMachineBasicBlock(MachineBasicBlock *MBB);
+
+  //===--------------------------------------------------------------------===//
+  // Debug location.
+  //
+
+  /// lookUpDebugLocId - Look up the DebugLocTuple index with the given
+  /// filename, line, and column. It may add a new filename and / or
+  /// a new DebugLocTuple.
+  unsigned lookUpDebugLocId(const char *Filename, unsigned Line, unsigned Col);
 };
 
 //===--------------------------------------------------------------------===//