lli: Switch to using ParseIRFile, for consistency with other LLVM tools.

 - Also, switch tests to not using llvm-as. They run 20% faster now, not that it matters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118952 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/ExecutionEngine/2003-05-07-ArgumentTest.ll b/test/ExecutionEngine/2003-05-07-ArgumentTest.ll
index fa15d71..baf42e5 100644
--- a/test/ExecutionEngine/2003-05-07-ArgumentTest.ll
+++ b/test/ExecutionEngine/2003-05-07-ArgumentTest.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | lli - test
+; RUN: lli %s test
 
 declare i32 @puts(i8*)