From cbc85a270d2546c49fc09f700687de2ecd46bd87 Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Fri, 15 Nov 2013 23:09:13 +0000
Subject: DwarfCompileUnit: Push DIDescriptors through a getDIE/insertDIE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194875 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp | 33 +++++++++++++++--------------
 lib/CodeGen/AsmPrinter/DwarfCompileUnit.h   |  4 ++--
 lib/CodeGen/AsmPrinter/DwarfDebug.cpp       |  2 +-
 3 files changed, 20 insertions(+), 19 deletions(-)

(limited to 'lib/CodeGen')

diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 93de0185e4..508a6927c2 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -38,7 +38,7 @@ CompileUnit::CompileUnit(unsigned UID, DIE *D, const MDNode *N, AsmPrinter *A,
     : UniqueID(UID), Node(N), CUDie(D), Asm(A), DD(DW), DU(DWU), IndexTyDie(0),
       DebugInfoOffset(0) {
   DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
-  insertDIE(N, D);
+  insertDIE(DIDescriptor(N), D);
 }
 
 /// ~CompileUnit - Destructor for compile unit.
@@ -110,21 +110,21 @@ static bool isShareableAcrossCUs(DIDescriptor D) {
 /// specified debug variable. We delegate the request to DwarfDebug
 /// when the DIE for this MDNode can be shared across CUs. The mappings
 /// will be kept in DwarfDebug for shareable DIEs.
-DIE *CompileUnit::getDIE(const MDNode *N) const {
-  if (isShareableAcrossCUs(DIDescriptor(N)))
-    return DD->getDIE(N);
-  return MDNodeToDieMap.lookup(N);
+DIE *CompileUnit::getDIE(DIDescriptor D) const {
+  if (isShareableAcrossCUs(D))
+    return DD->getDIE(D);
+  return MDNodeToDieMap.lookup(D);
 }
 
 /// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
 /// when the DIE for this MDNode can be shared across CUs. The mappings
 /// will be kept in DwarfDebug for shareable DIEs.
-void CompileUnit::insertDIE(const MDNode *N, DIE *D) {
-  if (isShareableAcrossCUs(DIDescriptor(N))) {
-    DD->insertDIE(N, D);
+void CompileUnit::insertDIE(DIDescriptor Desc, DIE *D) {
+  if (isShareableAcrossCUs(Desc)) {
+    DD->insertDIE(Desc, D);
     return;
   }
-  MDNodeToDieMap.insert(std::make_pair(N, D));
+  MDNodeToDieMap.insert(std::make_pair(Desc, D));
 }
 
 /// addFlag - Add a flag that is true.
@@ -300,7 +300,7 @@ DIE *CompileUnit::createAndAddDIE(unsigned Tag, DIE &Parent, const MDNode *MD) {
   DIE *Die = new DIE(Tag);
   Parent.addChild(Die);
   if (MD)
-    insertDIE(MD, Die);
+    insertDIE(DIDescriptor(MD), Die);
   return Die;
 }
 
@@ -1512,11 +1512,12 @@ static const ConstantExpr *getMergedGlobalExpr(const Value *V) {
 
 /// createGlobalVariableDIE - create global variable DIE.
 void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
+  DIGlobalVariable GV(N);
+
   // Check for pre-existence.
-  if (getDIE(N))
+  if (getDIE(GV))
     return;
 
-  DIGlobalVariable GV(N);
   if (!GV.isGlobalVariable())
     return;
 
@@ -1735,10 +1736,10 @@ void CompileUnit::constructContainingTypeDIEs() {
                                                  CE = ContainingTypeMap.end();
        CI != CE; ++CI) {
     DIE *SPDie = CI->first;
-    const MDNode *N = CI->second;
-    if (!N)
+    DIDescriptor D(CI->second);
+    if (!D)
       continue;
-    DIE *NDie = getDIE(N);
+    DIE *NDie = getDIE(D);
     if (!NDie)
       continue;
     addDIEEntry(SPDie, dwarf::DW_AT_containing_type, NDie);
@@ -1904,7 +1905,7 @@ void CompileUnit::constructMemberDIE(DIE &Buffer, DIDerivedType DT) {
 }
 
 /// getOrCreateStaticMemberDIE - Create new DIE for C++ static member.
-DIE *CompileUnit::getOrCreateStaticMemberDIE(const DIDerivedType DT) {
+DIE *CompileUnit::getOrCreateStaticMemberDIE(DIDerivedType DT) {
   if (!DT.Verify())
     return NULL;
 
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
index 1fd40fb4dc..31ba6d4f0d 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
@@ -159,7 +159,7 @@ public:
   /// when the MDNode can be part of the type system, since DIEs for
   /// the type system can be shared across CUs and the mappings are
   /// kept in DwarfDebug.
-  DIE *getDIE(const MDNode *N) const;
+  DIE *getDIE(DIDescriptor D) const;
 
   DIEBlock *getDIEBlock() { return new (DIEValueAllocator) DIEBlock(); }
 
@@ -167,7 +167,7 @@ public:
   /// when the MDNode can be part of the type system, since DIEs for
   /// the type system can be shared across CUs and the mappings are
   /// kept in DwarfDebug.
-  void insertDIE(const MDNode *N, DIE *D);
+  void insertDIE(DIDescriptor Desc, DIE *D);
 
   /// addDie - Adds or interns the DIE to the compile unit.
   ///
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 00a43a7fa8..74c02694b9 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -368,7 +368,7 @@ bool DwarfDebug::isSubprogramContext(const MDNode *Context) {
 // scope then create and insert DIEs for these variables.
 DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU,
                                           const MDNode *SPNode) {
-  DIE *SPDie = SPCU->getDIE(SPNode);
+  DIE *SPDie = SPCU->getDIE(DIDescriptor(SPNode));
 
   assert(SPDie && "Unable to find subprogram DIE!");
   DISubprogram SP(SPNode);
-- 
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