libcxx: Enhance lit test command in verbose mode.

Print both the compiler command and linker command so that it will be
easier for developers to reproduce the failed test cases.

llvm-svn: 237530

1 files changed, 8 insertions, 5 deletions

diff --git a/libcxx/test/libcxx/compiler.py b/libcxx/test/libcxx/compiler.py
index 4828874240d..995d61d58af 100644
--- a/libcxx/test/libcxx/compiler.py
+++ b/libcxx/test/libcxx/compiler.py
@@ -107,12 +107,15 @@ class CXXCompiler(object):
             # Otherwise wrap the filename in a context manager function.
             with_fn = lambda: libcxx.util.nullContext(object_file)
         with with_fn() as object_file:
-            cmd, output, err, rc = self.compile(source_file, object_file,
-                                                flags=flags, env=env, cwd=cwd)
+            cc_cmd, cc_stdout, cc_stderr, rc = self.compile(
+                    source_file, object_file, flags=flags, env=env, cwd=cwd)
             if rc != 0:
-                return cmd, output, err, rc
-            return self.link(object_file, out=out, flags=flags, env=env,
-                             cwd=cwd)
+                return cc_cmd, cc_stdout, cc_stderr, rc
+
+            link_cmd, link_stdout, link_stderr, rc = self.link(
+                    object_file, out=out, flags=flags, env=env, cwd=cwd)
+            return (cc_cmd + ['&&'] + link_cmd, cc_stdout + link_stdout,
+                    cc_stderr + link_stderr, rc)
 
     def dumpMacros(self, source_files=None, flags=[], env=None, cwd=None):
         if source_files is None: