There was a switch fall-through in the parser for textual LLVM that caused
bogus comparison operands to default to eq/oeq. Fix that, fix a couple of
tests that accidentally passed and test for bogus comparison opeartors
explicitly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171733 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 5d5ff81..fea5ec8 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -3120,7 +3120,7 @@
 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
   if (Opc == Instruction::FCmp) {
     switch (Lex.getKind()) {
-    default: TokError("expected fcmp predicate (e.g. 'oeq')");
+    default: return TokError("expected fcmp predicate (e.g. 'oeq')");
     case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
     case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
     case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
@@ -3140,7 +3140,7 @@
     }
   } else {
     switch (Lex.getKind()) {
-    default: TokError("expected icmp predicate (e.g. 'eq')");
+    default: return TokError("expected icmp predicate (e.g. 'eq')");
     case lltok::kw_eq:  P = CmpInst::ICMP_EQ; break;
     case lltok::kw_ne:  P = CmpInst::ICMP_NE; break;
     case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;