Implement full support for parsing primary expressions.  We can now parse
all of health and voronoi (ignoring directives).  We only get 409 lines into
176.gcc though because we don't have binary operators yet:

Parsing 176.gcc.llc.s:409: unexpected token in operand list
	movsbl	_arityvec+1(,%edi,8), %eax
	      	         ^



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73877 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/AsmLexer.cpp b/tools/llvm-mc/AsmLexer.cpp
index 740215b..36faeb3 100644
--- a/tools/llvm-mc/AsmLexer.cpp
+++ b/tools/llvm-mc/AsmLexer.cpp
@@ -235,6 +235,7 @@
   case ':': return asmtok::Colon;
   case '+': return asmtok::Plus;
   case '-': return asmtok::Minus;
+  case '~': return asmtok::Tilde;
   case '(': return asmtok::LParen;
   case ')': return asmtok::RParen;
   case '*': return asmtok::Star;