Bug 1761974 - Handle ccache 'Uncacheable/Unsupported code directive' r=mhentges

Differential Revision: https://phabricator.services.mozilla.com/D142335

python/mozbuild/mozbuild/controller/building.py

@@ -921,6 +921,7 @@ class CCacheStats(object):
         ("bad_args", "Uncacheable/Bad compiler arguments"),
         ("autoconf", "Uncacheable/Autoconf compile/link"),
         ("no_input", "Uncacheable/No input file"),
+        ("unsupported_code_directive", "Uncacheable/Unsupported code directive"),
         ("num_cleanups", "Primary storage/Cleanups"),
         ("cache_files", "Primary storage/Files"),
         # Cache size is reported in GB, see

python/mozbuild/mozbuild/test/controller/test_ccachestats.py

@@ -329,6 +329,7 @@ Uncacheable:
   Compilation failed:         49
   No input file:               9
   Preprocessing failed:       90
+  Unsupported code directive:  1
     """.format(
         timestamp=time.strftime("%c")
     )