Fix and add tests for all cases in x86 and x86_64 where gnu as implicitly
sets the type of a symbol to STT_TLS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120100 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCELFStreamer.cpp b/lib/MC/MCELFStreamer.cpp
index 1eddda9..ec28a90 100644
--- a/lib/MC/MCELFStreamer.cpp
+++ b/lib/MC/MCELFStreamer.cpp
@@ -467,12 +467,20 @@
 
   case MCExpr::SymbolRef: {
     const MCSymbolRefExpr &symRef = *cast<MCSymbolRefExpr>(expr);
-    MCSymbolRefExpr::VariantKind kind = symRef.getKind();
-    if (kind != MCSymbolRefExpr::VK_TLSGD &&
-	kind != MCSymbolRefExpr::VK_TLSLD &&
-	kind != MCSymbolRefExpr::VK_TLSLDM &&
-	kind != MCSymbolRefExpr::VK_ARM_TLSGD)
+    switch (symRef.getKind()) {
+    default:
       return;
+    case MCSymbolRefExpr::VK_NTPOFF:
+    case MCSymbolRefExpr::VK_GOTNTPOFF:
+    case MCSymbolRefExpr::VK_TLSGD:
+    case MCSymbolRefExpr::VK_TLSLDM:
+    case MCSymbolRefExpr::VK_TPOFF:
+    case MCSymbolRefExpr::VK_DTPOFF:
+    case MCSymbolRefExpr::VK_GOTTPOFF:
+    case MCSymbolRefExpr::VK_TLSLD:
+    case MCSymbolRefExpr::VK_ARM_TLSGD:
+      break;
+    }
     MCSymbolData &SD = getAssembler().getOrCreateSymbolData(symRef.getSymbol());
     SetType(SD, ELF::STT_TLS);
     break;