clang-cl: parse (but don't support) the /o flag
Apparently folks run into this (PR17097). The flag is not supported by
MSVC either, but we should parse it so we don't get confused when it occurs.
This changes the clang-cl output for "clang-cl /c /o foo.obj" from:
clang-cl.exe: error: no such file or directory: '/o'
clang-cl.exe: error: no such file or directory: 'foo.obj'
to:
clang-cl.exe: warning: argument unused during compilation: '/o bajs.obj'
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190323 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CLCompatOptions.td b/include/clang/Driver/CLCompatOptions.td
index a520046..574830c 100644
--- a/include/clang/Driver/CLCompatOptions.td
+++ b/include/clang/Driver/CLCompatOptions.td
@@ -143,6 +143,7 @@
def _SLASH_Gy_ : CLFlag<"Gy-">;
def _SLASH_GZ : CLFlag<"GZ">;
def _SLASH_MP : CLJoined<"MP">;
+def _SLASH_o : CLJoinedOrSeparate<"o">;
def _SLASH_w : CLJoined<"w">;
def _SLASH_Za : CLFlag<"Za">;
def _SLASH_Zc : CLJoined<"Zc:">;
diff --git a/test/Driver/cl-options.c b/test/Driver/cl-options.c
index dc33db6..ab0320c 100644
--- a/test/Driver/cl-options.c
+++ b/test/Driver/cl-options.c
@@ -107,6 +107,7 @@
// (/Zs is for syntax-only)
// RUN: %clang_cl /Zs /EHsc /Fdfoo /fp:precise /Gd /GL /GL- -- %s 2>&1
// RUN: %clang_cl /Zs /Gm /Gm- /GS /Gy /Gy- /GZ -- %s 2>&1
+// RUN: %clang_cl /Zs /ofoo.obj /o foo.obj -- %s 2>&1
// RUN: %clang_cl /Zs /wfoo /Zc:wchar_t- -- %s 2>&1
// RUN: %clang_cl /Zs /ZI /Zi /MP -- %s 2>&1