Print a load of a null pointer (in intel mode) like this:

        mov %AX, WORD PTR [0]

instead of like this:

        mov %AX, WORD PTR []


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19501 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86AsmPrinter.cpp b/lib/Target/X86/X86AsmPrinter.cpp
index 7f47adf..b0d2788 100644
--- a/lib/Target/X86/X86AsmPrinter.cpp
+++ b/lib/Target/X86/X86AsmPrinter.cpp
@@ -365,7 +365,7 @@
     printOp(DispSpec, true);
   } else {
     int DispVal = DispSpec.getImmedValue();
-    if (DispVal) {
+    if (DispVal || (!BaseReg.getReg() && !IndexReg.getReg())) {
       if (NeedPlus)
         if (DispVal > 0)
           O << " + ";