In AnalyseAsm, ignore labels that contain "." anywhere.

GCC appears to generate labels that look like "constantname.1234" for some
array constants.

backends/AnalyseAsm.hs

@@ -77,9 +77,9 @@ parseAsmLine s
     -- digit.
     parseLabel :: String -> Maybe AsmItem
     parseLabel s@(c:cs)
-      | c == '.' || isDigit c = Nothing
-      | last cs == ':'        = Just $ AsmLabel (liat s)
-      | otherwise = Nothing
+      | isDigit c || '.' `elem` s = Nothing
+      | last cs == ':'            = Just $ AsmLabel (liat s)
+      | otherwise                 = Nothing
       where
         liat :: String -> String
         liat = reverse . tail . reverse

backends/AnalyseAsmTest.hs

@@ -57,6 +57,7 @@ testParse = TestList
 
     , testLine  350 ".blah:" $ Nothing
     , testLine  351 "0:" $ Nothing
+    , testLine  352 "blah.1234:" $ Nothing
     ]
   where
     testLine :: Int -> String -> Maybe AsmItem -> Test