> > Otherwise, I don't see what moving the test would accomplish. If
> > "long" is never 128 bits, it doesn't matter if the int128 test is
> > before or after it, and the other intN are never the same size as
> > standard types,
>
> I don't see how you can assert that these will never happen.
It's checked specifically in toplev.c - if the backend *does* request
a type that matches a standard size, they won't get it:
+static bool
+standard_type_bitsize (int bitsize)
+{
+ /* As a special exception, we always want __int128 enabled if possible. */
+ if (bitsize == 128)
+ return false;
+ if (bitsize == CHAR_TYPE_SIZE
+ || bitsize == SHORT_TYPE_SIZE
+ || bitsize == INT_TYPE_SIZE
+ || bitsize == LONG_TYPE_SIZE
+ || (bitsize == LONG_LONG_TYPE_SIZE && LONG_LONG_TYPE_SIZE <
GET_MODE_BITSIZE (TImode)))
+ return true;
+ return false;
+}
+ /* This must happen after the backend has a chance to process
+ command line options, but before the parsers are
+ initialized. */
+ for (i = 0; i < NUM_INT_N_ENTS; i ++)
+ if (targetm.scalar_mode_supported_p (int_n_data[i].m)
+ && ! standard_type_bitsize (int_n_data[i].bitsize)
+ && int_n_data[i].bitsize <= HOST_BITS_PER_WIDE_INT * 2)
+ int_n_enabled_p[i] = true;
+ else
+ int_n_enabled_p[i] = false;
+
