[ms-inline asm] Add the isOffsetOf() function.
Part of rdar://12470317


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166436 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 63cce6c..9689180 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -320,6 +320,11 @@
     return Mem.Size;
   }
 
+  bool isOffsetOf() const {
+    assert(Kind == Memory && "Invalid access!");
+    return Mem.OffsetOf;
+  }
+
   bool needSizeDirective() const {
     assert(Kind == Memory && "Invalid access!");
     return Mem.NeedSizeDir;