MC: Parse .set and assignments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74208 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/AsmLexer.cpp b/tools/llvm-mc/AsmLexer.cpp
index 186a058..db86825 100644
--- a/tools/llvm-mc/AsmLexer.cpp
+++ b/tools/llvm-mc/AsmLexer.cpp
@@ -262,6 +262,7 @@
   case '*': return asmtok::Star;
   case ',': return asmtok::Comma;
   case '$': return asmtok::Dollar;
+  case '=': return asmtok::Equal;
   case '|': return asmtok::Pipe;
   case '^': return asmtok::Caret;
   case '&': return asmtok::Amp;