From 6dbfd7bfbcc7a69c978452560033fa5953db2cbf Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 24 Apr 2007 00:18:21 +0000
Subject: [PATCH] track global inits

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36385 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Bitcode/Reader/BitcodeReader.cpp | 10 +++++++---
 lib/Bitcode/Reader/BitcodeReader.h   |  2 ++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index ca74e3f6b7f..97f33a9b811 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -243,7 +243,7 @@ bool BitcodeReader::ParseTypeSymbolTable(BitstreamReader &Stream) {
     switch (Stream.ReadRecord(Code, Record)) {
     default:  // Default behavior: unknown type.
       break;
-    case bitc::TST_ENTRY_CODE:    // TST_ENTRY: [typeid, namelen, namechar x N]
+    case bitc::TST_CODE_ENTRY:    // TST_ENTRY: [typeid, namelen, namechar x N]
       if (ConvertToString(Record, 1, TypeName))
         return Error("Invalid TST_ENTRY record");
       unsigned TypeID = Record[0];
@@ -288,7 +288,7 @@ bool BitcodeReader::ParseValueSymbolTable(BitstreamReader &Stream) {
     switch (Stream.ReadRecord(Code, Record)) {
     default:  // Default behavior: unknown type.
       break;
-    case bitc::VST_ENTRY_CODE:    // VST_ENTRY: [valueid, namelen, namechar x N]
+    case bitc::TST_CODE_ENTRY:    // VST_ENTRY: [valueid, namelen, namechar x N]
       if (ConvertToString(Record, 1, ValueName))
         return Error("Invalid TST_ENTRY record");
       unsigned ValueID = Record[0];
@@ -358,6 +358,8 @@ bool BitcodeReader::ParseModule(BitstreamReader &Stream,
     case bitc::MODULE_CODE_VERSION:  // VERSION: [version#]
       if (Record.size() < 1)
         return Error("Malformed MODULE_CODE_VERSION");
+      if (!GlobalInits.empty())
+        return Error("Malformed global initializer set");
       // Only version #0 is supported so far.
       if (Record[0] != 0)
         return Error("Unknown bitstream version!");
@@ -431,7 +433,9 @@ bool BitcodeReader::ParseModule(BitstreamReader &Stream,
       
       ValueList.push_back(NewGV);
       
-      // TODO: remember initializer/global pair for later substitution.
+      // Remember which value to use for the global initializer.
+      if (unsigned InitID = Record[2])
+        GlobalInits.push_back(std::make_pair(NewGV, InitID-1));
       break;
     }
     // FUNCTION:  [type, callingconv, isproto, linkage, alignment, section,
diff --git a/lib/Bitcode/Reader/BitcodeReader.h b/lib/Bitcode/Reader/BitcodeReader.h
index 45452ba0cb3..ed11692391c 100644
--- a/lib/Bitcode/Reader/BitcodeReader.h
+++ b/lib/Bitcode/Reader/BitcodeReader.h
@@ -22,12 +22,14 @@
 namespace llvm {
   class BitstreamReader;
   class Value;
+  class GlobalValue;
 
 class BitcodeReader : public ModuleProvider {
   const char *ErrorString;
   
   std::vector<PATypeHolder> TypeList;
   std::vector<Value*> ValueList;
+  std::vector<std::pair<GlobalValue*, unsigned> > GlobalInits;
 public:
   virtual ~BitcodeReader() {}