[ms-inline asm] Add support for using offsetof operator with variables that use

namespace alias qualifiers.  Test case coming on clang side shortly.
Part of rdar://13499009

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179339 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 6f026cd3798e0245b3dee60d7f5ab56d90dbf081..946f0e90ff9d6a6d4ae250d531ff3c5088f2038c 100644 (file)
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -1411,9 +1411,14 @@ X86Operand *X86AsmParser::ParseIntelOffsetOfOperator() {
 
   const MCExpr *Val;
   SMLoc Start = Tok.getLoc(), End;
+  StringRef Identifier = Tok.getString();
   if (getParser().parsePrimaryExpr(Val, End))
     return ErrorOperand(Start, "Unable to parse expression!");
 
+  const MCExpr *Disp = 0;
+  if (X86Operand *Err = ParseIntelVarWithQualifier(Disp, Identifier))
+    return Err;
+
   // Don't emit the offset operator.
   InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, OffsetOfLoc, 7));
 
@@ -1421,10 +1426,8 @@ X86Operand *X86AsmParser::ParseIntelOffsetOfOperator() {
   // register operand to ensure proper matching.  Just pick a GPR based on
   // the size of a pointer.
   unsigned RegNo = is64BitMode() ? X86::RBX : X86::EBX;
-  unsigned Len = End.getPointer() - Start.getPointer();
-  StringRef SymName(Start.getPointer(), Len);
   return X86Operand::CreateReg(RegNo, Start, End, /*GetAddress=*/true,
-                               OffsetOfLoc, SymName);
+                               OffsetOfLoc, Identifier);
 }
 
 enum IntelOperatorKind {