Foundation for call frame information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27491 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 24 insertions, 13 deletions

diff --git a/lib/CodeGen/MachineDebugInfo.cpp b/lib/CodeGen/MachineDebugInfo.cpp
index 9876e652a8..2e7e8c0d9f 100644
--- a/lib/CodeGen/MachineDebugInfo.cpp
+++ b/lib/CodeGen/MachineDebugInfo.cpp
@@ -10,6 +10,7 @@
 #include "llvm/CodeGen/MachineDebugInfo.h"
 
 #include "llvm/Constants.h"
+#include "llvm/CodeGen/MachineLocation.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/GlobalVariable.h"
 #include "llvm/Intrinsics.h"
@@ -1424,9 +1425,8 @@ MachineDebugInfo::MachineDebugInfo()
 , LabelID(0)
 , ScopeMap()
 , RootScope(NULL)
-{
-  
-}
+, FrameMoves()
+{}
 MachineDebugInfo::~MachineDebugInfo() {
 
 }
@@ -1443,6 +1443,27 @@ bool MachineDebugInfo::doFinalization() {
   return false;
 }
 
+/// BeginFunction - Begin gathering function debug information.
+///
+void MachineDebugInfo::BeginFunction(MachineFunction *MF) {
+  // Coming soon.
+}
+
+/// MachineDebugInfo::EndFunction - Discard function debug information.
+///
+void MachineDebugInfo::EndFunction() {
+  // Clean up scope information.
+  if (RootScope) {
+    delete RootScope;
+    ScopeMap.clear();
+    RootScope = NULL;
+  }
+  
+  // Clean up frame info.
+  for (unsigned i = 0, N = FrameMoves.size(); i < N; ++i) delete FrameMoves[i];
+  FrameMoves.clear();
+}
+
 /// getDescFor - Convert a Value to a debug information descriptor.
 ///
 // FIXME - use new Value type when available.
@@ -1565,14 +1586,4 @@ DebugScope *MachineDebugInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
   return Slot;
 }
 
-/// ClearScopes - Delete the scope and variable info after a function is
-/// completed.
-void MachineDebugInfo::ClearScopes() {
-  if (RootScope) {
-    delete RootScope;
-    ScopeMap.clear();
-    RootScope = NULL;
-  }
-}
-