Add missed section

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53354 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index e3bc507..8ad9cad 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -147,6 +147,7 @@
   FourByteConstantSection = "\t.literal4\n";
   FourByteConstantSection_ = getUnnamedSection("\t.literal4\n",
                                                SectionFlags::Mergeable);
+  EightByteConstantSection = "\t.literal8\n";
   EightByteConstantSection_ = getUnnamedSection("\t.literal8\n",
                                                 SectionFlags::Mergeable);
   // FIXME: Why don't always use this section?