[pdb] Write PDB TPI Stream from Yaml.

This writes the full sequence of type records described in
Yaml to the TPI stream of the PDB file.

Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D24316

llvm-svn: 281063
diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
index 5216577..017fc20 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -40,7 +40,8 @@
 using namespace llvm::msf;
 
 CodeViewDebug::CodeViewDebug(AsmPrinter *AP)
-    : DebugHandlerBase(AP), OS(*Asm->OutStreamer), CurFn(nullptr) {
+    : DebugHandlerBase(AP), OS(*Asm->OutStreamer), Allocator(),
+      TypeTable(Allocator), CurFn(nullptr) {
   // If module doesn't have named metadata anchors or COFF debug section
   // is not available, skip any debug info related stuff.
   if (!MMI->getModule()->getNamedMetadata("llvm.dbg.cu") ||
diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
index 2dc3323..729012b 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
@@ -36,6 +36,7 @@
 /// \brief Collects and handles line tables information in a CodeView format.
 class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
   MCStreamer &OS;
+  llvm::BumpPtrAllocator Allocator;
   codeview::MemoryTypeTableBuilder TypeTable;
 
   /// Represents the most general definition range.