Fix PR21189 -- Emit symbol subsection required to debug LLVM-built binaries with...

[oota-llvm.git] / lib / CodeGen / AsmPrinter / AddressPool.h

diff --git a/lib/CodeGen/AsmPrinter/AddressPool.h b/lib/CodeGen/AsmPrinter/AddressPool.h
index 3058fed33fd08941212327c916d2298345def1a9..802e050cdf6e192b57c1ca011c37f09c3892519f 100644 (file)
--- a/lib/CodeGen/AsmPrinter/AddressPool.h
+++ b/lib/CodeGen/AsmPrinter/AddressPool.h
@@ -7,8 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef CODEGEN_ASMPRINTER_ADDRESSPOOL_H__
-#define CODEGEN_ASMPRINTER_ADDRESSPOOL_H__
+#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_ADDRESSPOOL_H
+#define LLVM_LIB_CODEGEN_ASMPRINTER_ADDRESSPOOL_H
 
 #include "llvm/ADT/DenseMap.h"
 
@@ -26,6 +26,11 @@ class AddressPool {
     AddressPoolEntry(unsigned Number, bool TLS) : Number(Number), TLS(TLS) {}
   };
   DenseMap<const MCSymbol *, AddressPoolEntry> Pool;
+
+  /// Record whether the AddressPool has been queried for an address index since
+  /// the last "resetUsedFlag" call. Used to implement type unit fallback - a
+  /// type that references addresses cannot be placed in a type unit when using
+  /// fission.
   bool HasBeenUsed;
 
 public: