Handle --version before handling --mllvm.

Because it's a waste of time to handle --mllvm before --version.

Differential Revision: https://reviews.llvm.org/D43527

llvm-svn: 325952
diff --git a/lld/wasm/Driver.cpp b/lld/wasm/Driver.cpp
index ad9e82e..ac0ec9d 100644
--- a/lld/wasm/Driver.cpp
+++ b/lld/wasm/Driver.cpp
@@ -233,6 +233,12 @@
     return;
   }
 
+  // Handle --version
+  if (Args.hasArg(OPT_version) || Args.hasArg(OPT_v)) {
+    outs() << getLLDVersion() << "\n";
+    return;
+  }
+
   // Parse and evaluate -mllvm options.
   std::vector<const char *> V;
   V.push_back("wasm-ld (LLVM option parsing)");
@@ -242,11 +248,6 @@
 
   errorHandler().ErrorLimit = args::getInteger(Args, OPT_error_limit, 20);
 
-  if (Args.hasArg(OPT_version) || Args.hasArg(OPT_v)) {
-    outs() << getLLDVersion() << "\n";
-    return;
-  }
-
   Config->AllowUndefined = Args.hasArg(OPT_allow_undefined);
   Config->CheckSignatures =
       Args.hasFlag(OPT_check_signatures, OPT_no_check_signatures, false);