Try to resolve symbol differences early, and if successful create a plain
data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120767 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCLoggingStreamer.cpp b/lib/MC/MCLoggingStreamer.cpp
index 5191ac4..6cbef0b 100644
--- a/lib/MC/MCLoggingStreamer.cpp
+++ b/lib/MC/MCLoggingStreamer.cpp
@@ -84,6 +84,13 @@
     return Child->EmitWeakReference(Alias, Symbol);
   }
 
+  virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+                                        const MCSymbol *LastLabel,
+                                        const MCSymbol *Label) {
+    LogCall("EmitDwarfAdvanceLineAddr");
+    return Child->EmitDwarfAdvanceLineAddr(LineDelta, LastLabel, Label);
+  }
+
   virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) {
     LogCall("EmitSymbolAttribute");
     return Child->EmitSymbolAttribute(Symbol, Attribute);