From c29d5b378ece00608ec96a5ccd2b0f53999f1957 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 30 Jul 2009 00:02:57 +0000
Subject: [PATCH] print single NamedMDNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77549 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/AsmWriter.cpp | 48 +++++++++++++++++++++++++++++++++++++---
 1 file changed, 45 insertions(+), 3 deletions(-)

diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 28cc56e6b4e..bfdb0489b5f 100644
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -473,6 +473,9 @@ private:
   /// TheMDNode - The MDNode for which we are holding slot numbers.
   const MDNode *TheMDNode;
 
+  /// TheNamedMDNode - The MDNode for which we are holding slot numbers.
+  const NamedMDNode *TheNamedMDNode;
+
   /// mMap - The TypePlanes map for the module level data.
   ValueMap mMap;
   unsigned mNext;
@@ -491,6 +494,8 @@ public:
   explicit SlotTracker(const Function *F);
   /// Construct from a mdnode.
   explicit SlotTracker(const MDNode *N);
+  /// Construct from a named mdnode.
+  explicit SlotTracker(const NamedMDNode *N);
 
   /// Return the slot number of the specified value in it's type
   /// plane.  If something is not in the SlotTracker, return -1.
@@ -539,6 +544,9 @@ private:
   /// Add all MDNode operands.
   void processMDNode();
 
+  /// Add all MDNode operands.
+  void processNamedMDNode();
+
   SlotTracker(const SlotTracker &);  // DO NOT IMPLEMENT
   void operator=(const SlotTracker &);  // DO NOT IMPLEMENT
 };
@@ -578,20 +586,26 @@ static SlotTracker *createSlotTracker(const Value *V) {
 // to be added to the slot table.
 SlotTracker::SlotTracker(const Module *M)
   : TheModule(M), TheFunction(0), FunctionProcessed(false), TheMDNode(0),
-    mNext(0), fNext(0),  mdnNext(0) {
+    TheNamedMDNode(0), mNext(0), fNext(0),  mdnNext(0) {
 }
 
 // Function level constructor. Causes the contents of the Module and the one
 // function provided to be added to the slot table.
 SlotTracker::SlotTracker(const Function *F)
   : TheModule(F ? F->getParent() : 0), TheFunction(F), FunctionProcessed(false),
-    TheMDNode(0), mNext(0), fNext(0), mdnNext(0) {
+    TheMDNode(0), TheNamedMDNode(0), mNext(0), fNext(0), mdnNext(0) {
 }
 
 // Constructor to handle single MDNode.
 SlotTracker::SlotTracker(const MDNode *C)
   : TheModule(0), TheFunction(0), FunctionProcessed(false), TheMDNode(C),
-    mNext(0), fNext(0),  mdnNext(0) {
+    TheNamedMDNode(0), mNext(0), fNext(0),  mdnNext(0) {
+}
+
+// Constructor to handle single NamedMDNode.
+SlotTracker::SlotTracker(const NamedMDNode *N)
+  : TheModule(0), TheFunction(0), FunctionProcessed(false), TheMDNode(0),
+    TheNamedMDNode(N), mNext(0), fNext(0),  mdnNext(0) {
 }
 
 inline void SlotTracker::initialize() {
@@ -605,6 +619,9 @@ inline void SlotTracker::initialize() {
 
   if (TheMDNode)
     processMDNode();
+
+  if (TheNamedMDNode)
+    processNamedMDNode();
 }
 
 // Iterate through all the global variables, functions, and global
@@ -685,6 +702,19 @@ void SlotTracker::processMDNode() {
   ST_DEBUG("end processMDNode!\n");
 }
 
+/// processNamedMDNode - Process TheNamedMDNode.
+void SlotTracker::processNamedMDNode() {
+  ST_DEBUG("begin processNamedMDNode!\n");
+  mdnNext = 0;
+  for (unsigned i = 0, e = TheNamedMDNode->getNumElements(); i != e; ++i) {
+    MDNode *MD = dyn_cast_or_null<MDNode>(TheNamedMDNode->getElement(i));
+    if (MD)
+      CreateMetadataSlot(MD);
+  }
+  TheNamedMDNode = 0;
+  ST_DEBUG("end processNamedMDNode!\n");
+}
+
 /// Clean up after incorporating a function. This is the only way to get out of
 /// the function incorporation state that affects get*Slot/Create*Slot. Function
 /// incorporation state is indicated by TheFunction != 0.
@@ -2010,6 +2040,18 @@ void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
     TypePrinting TypePrinter;
     SlotTable.initialize();
     WriteMDNodes(OS, TypePrinter, SlotTable);
+  } else if (const NamedMDNode *N = dyn_cast<NamedMDNode>(this)) {
+    SlotTracker SlotTable(N);
+    TypePrinting TypePrinter;
+    SlotTable.initialize();
+    OS << "!" << N->getName() << " = !{";
+    for (unsigned i = 0, e = N->getNumElements(); i != e; ++i) {
+      if (i) OS << ", ";
+      MDNode *MD = cast<MDNode>(N->getElement(i));
+      OS << '!' << SlotTable.getMetadataSlot(MD);
+    }
+    OS << "}\n";
+    WriteMDNodes(OS, TypePrinter, SlotTable);
   } else if (const Constant *C = dyn_cast<Constant>(this)) {
     TypePrinting TypePrinter;
     TypePrinter.print(C->getType(), OS);