[ms-inline asm] Add a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163123 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index deef84408d..f463b7703c 100644
--- a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -106,6 +106,9 @@ GetMCInstOperandNum(unsigned Kind, MCInst &Inst,
                     const SmallVectorImpl<MCParsedAsmOperand*> &Operands,
                     unsigned OperandNum) {
   assert (0 && "GetMCInstOperandNum() not supported by the Mips target.");
+  // The Mips backend doesn't currently include the matcher implementation, so
+  // the GetMCInstOperandNumImpl() is undefined.  This is a temporary
+  // work around.
   return 0;
 }