Long double patch 4 of N: initial x87 implementation.
Lots of problems yet but some simple things work.

llvm-svn: 40847
diff --git a/llvm/lib/Target/X86/X86IntelAsmPrinter.h b/llvm/lib/Target/X86/X86IntelAsmPrinter.h
index 9ad11ff..2cb5a86 100644
--- a/llvm/lib/Target/X86/X86IntelAsmPrinter.h
+++ b/llvm/lib/Target/X86/X86IntelAsmPrinter.h
@@ -76,6 +76,10 @@
     O << "QWORD PTR ";
     printMemReference(MI, OpNo);
   }
+  void printf80mem(const MachineInstr *MI, unsigned OpNo) {
+    O << "XWORD PTR ";
+    printMemReference(MI, OpNo);
+  }
   void printf128mem(const MachineInstr *MI, unsigned OpNo) {
     O << "XMMWORD PTR ";
     printMemReference(MI, OpNo);