From 539f434334ae6cc5becba8b3099eb20ab7fe48dc Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 1 Oct 2009 01:03:26 +0000
Subject: If location info is attached with an instruction then keep track of
 alloca slots used by a variable. This info will be used by AsmPrinter to emit
 debug info for variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83189 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/MachineModuleInfo.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'include/llvm/CodeGen')

diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 6707ab119c..b7b90198b1 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -48,6 +48,7 @@ namespace llvm {
 //===----------------------------------------------------------------------===//
 // Forward declarations.
 class Constant;
+class MDNode;
 class GlobalVariable;
 class MachineBasicBlock;
 class MachineFunction;
@@ -142,9 +143,13 @@ class MachineModuleInfo : public ImmutablePass {
   /// DbgInfoAvailable - True if debugging information is available
   /// in this module.
   bool DbgInfoAvailable;
+
 public:
   static char ID; // Pass identification, replacement for typeid
 
+  typedef DenseMap<MDNode *, std::pair<MDNode *, unsigned> > VariableDbgInfoMapTy;
+  VariableDbgInfoMapTy VariableDbgInfo;
+
   MachineModuleInfo();
   ~MachineModuleInfo();
   
@@ -325,6 +330,15 @@ public:
   /// of one is required to emit exception handling info.
   Function *getPersonality() const;
 
+  /// setVariableDbgInfo - Collect information used to emit debugging information
+  /// of a variable.
+  void setVariableDbgInfo(MDNode *N, MDNode *L, unsigned S) {
+    if (N && L)
+      VariableDbgInfo[N] = std::make_pair(L, S);
+  }
+
+  VariableDbgInfoMapTy &getVariableDbgInfo() {  return VariableDbgInfo;  }
+
 }; // End class MachineModuleInfo
 
 } // End llvm namespace
-- 
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