From 47f79bb58e42f1a08a7f388b8b1596ded7d49bbb Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Mon, 2 Jan 2012 07:49:53 +0000
Subject: Materialize functions whose basic blocks are used by global
 variables. Fixes PR11677.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147425 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Bitcode/Reader/BitcodeReader.cpp | 10 ++++++++++
 lib/Bitcode/Reader/BitcodeReader.h   |  4 +++-
 2 files changed, 13 insertions(+), 1 deletion(-)

(limited to 'lib/Bitcode')

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index b86d6e0883..9d10498943 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -27,6 +27,13 @@
 #include "llvm/OperandTraits.h"
 using namespace llvm;
 
+void BitcodeReader::materializeForwardReferencedFunctions() {
+  while (!BlockAddrFwdRefs.empty()) {
+    Function *F = BlockAddrFwdRefs.begin()->first;
+    F->Materialize();
+  }
+}
+
 void BitcodeReader::FreeState() {
   if (BufferOwned)
     delete Buffer;
@@ -2779,6 +2786,9 @@ Module *llvm::getLazyBitcodeModule(MemoryBuffer *Buffer,
   }
   // Have the BitcodeReader dtor delete 'Buffer'.
   R->setBufferOwned(true);
+
+  R->materializeForwardReferencedFunctions();
+
   return M;
 }
 
diff --git a/lib/Bitcode/Reader/BitcodeReader.h b/lib/Bitcode/Reader/BitcodeReader.h
index 978b15b0f0..952d645a4c 100644
--- a/lib/Bitcode/Reader/BitcodeReader.h
+++ b/lib/Bitcode/Reader/BitcodeReader.h
@@ -184,7 +184,9 @@ public:
   ~BitcodeReader() {
     FreeState();
   }
-  
+
+  void materializeForwardReferencedFunctions();
+
   void FreeState();
   
   /// setBufferOwned - If this is true, the reader will destroy the MemoryBuffer
-- 
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