Options: Use AliasArgs for -O -> -O2 translation.
This way we can do the translation in the .td file rather than manually.
llvm-svn: 187583
diff --git a/clang/test/Driver/O.c b/clang/test/Driver/O.c
new file mode 100644
index 0000000..a7dedc8
--- /dev/null
+++ b/clang/test/Driver/O.c
@@ -0,0 +1,10 @@
+// Test that we parse and translate the -O option correctly.
+
+// RUN: %clang -O -### %s 2>&1 | FileCheck -check-prefix=CHECK-O %s
+// CHECK-O: -O2
+
+// RUN: %clang -O0 -### %s 2>&1 | FileCheck -check-prefix=CHECK-O0 %s
+// CHECK-O0: -O0
+
+// RUN: %clang -O1 -### %s 2>&1 | FileCheck -check-prefix=CHECK-O1 %s
+// CHECK-O1: -O1