From 3e9878ca0777b79a414e0bd27746ea4dc89921fc Mon Sep 17 00:00:00 2001
From: Chad Rosier <mcrosier@apple.com>
Date: Mon, 22 Oct 2012 19:50:35 +0000
Subject: [PATCH] [ms-inline asm] Add the isOffsetOf() function. Part of
 rdar://12470317

llvm-svn: 166436
---
 include/llvm/MC/MCParser/MCParsedAsmOperand.h | 5 +++++
 lib/Target/X86/AsmParser/X86AsmParser.cpp     | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/include/llvm/MC/MCParser/MCParsedAsmOperand.h b/include/llvm/MC/MCParser/MCParsedAsmOperand.h
index 7d0914ebb49..35f47c0b9c8 100644
--- a/include/llvm/MC/MCParser/MCParsedAsmOperand.h
+++ b/include/llvm/MC/MCParser/MCParsedAsmOperand.h
@@ -64,6 +64,11 @@ public:
   /// getEndLoc - Get the location of the last token of this operand.
   virtual SMLoc getEndLoc() const = 0;
 
+  /// isOffsetOf - Do we need to emit code to get the offset of the variable,
+  /// rather then the value of the variable?   Only valid when parsing MS-style
+  /// inline assembly.
+  virtual bool isOffsetOf() const { return false; }
+
   /// needSizeDirective - Do we need to emit a sizing directive for this
   /// operand?  Only valid when parsing MS-style inline assembly.
   virtual bool needSizeDirective() const { return false; }
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 63cce6cbc86..9689180afdb 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -320,6 +320,11 @@ struct X86Operand : public MCParsedAsmOperand {
     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;