[Symbolizer] Don't use PE symbol tables to override PDB symbols

Summary:
PE files are stripped by default, and only contain the names of exported
symbols.

The actual reason that we bother to do this override by default is
actually due to a quirk of the way -gline-tables-only is implemented, so
I phrased the check as "if we are symbolizing from dwarf, do the symtab
override".

This fixes lots of Windows ASan tests that I broke in r250582.

Reviewers: samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D14594

llvm-svn: 253051
diff --git a/llvm/lib/DebugInfo/Symbolize/SymbolizableObjectFile.h b/llvm/lib/DebugInfo/Symbolize/SymbolizableObjectFile.h
index a90e95c..8583b6a 100644
--- a/llvm/lib/DebugInfo/Symbolize/SymbolizableObjectFile.h
+++ b/llvm/lib/DebugInfo/Symbolize/SymbolizableObjectFile.h
@@ -43,6 +43,9 @@
   uint64_t getModulePreferredBase() const override;
 
 private:
+  bool shouldOverrideWithSymbolTable(FunctionNameKind FNKind,
+                                     bool UseSymbolTable) const;
+
   bool getNameFromSymbolTable(object::SymbolRef::Type Type, uint64_t Address,
                               std::string &Name, uint64_t &Addr,
                               uint64_t &Size) const;