Discard code that supported old bytecode formats. This makes the Bytecode
Reader code much easier to read and maintain. Backwards compatibility from
version 5 format has been retained. Older formats will produce an error.

llvm-svn: 31723
diff --git a/llvm/lib/Bytecode/Reader/Analyzer.cpp b/llvm/lib/Bytecode/Reader/Analyzer.cpp
index 23d524c..3d6a001 100644
--- a/llvm/lib/Bytecode/Reader/Analyzer.cpp
+++ b/llvm/lib/Bytecode/Reader/Analyzer.cpp
@@ -532,7 +532,7 @@
     assert(BType >= BytecodeFormat::ModuleBlockID);
     assert(BType < BytecodeFormat::NumberOfBlockIDs);
     bca.BlockSizes[
-      llvm::BytecodeFormat::CompressedBytecodeBlockIdentifiers(BType)] += Size;
+      llvm::BytecodeFormat::BytecodeBlockIdentifiers(BType)] += Size;
 
     if (bca.version < 3) // Check for long block headers versions
       bca.BlockSizes[llvm::BytecodeFormat::Reserved_DoNotUse] += 8;