gen-pass-instances.awk is sensitive to the order in which passes are added...

	gen-pass-instances.awk is sensitive to the order in which
	passes are added; passes that appear later have to be added first.
	PR target/71676
	PR target/71678
	* config/avr/avr-passes.def: Swap order of directives for
	gen-pass-instances.awk.

From-SVN: r241547

gcc/ChangeLog

+2016-10-26  Georg-Johann Lay  <avr@gjlay.de>
+
+	gen-pass-instances.awk is sensitive to the order in which
+	passes are added; passes that appear later have to be added first.
+
+	PR target/71676
+	PR target/71678
+	* config/avr/avr-passes.def: Swap order of directives for
+	gen-pass-instances.awk.
+
 2016-10-25  Jeff Law  <law@redhat.com>
 
 	* config/vax/vax.c (vad_address_cost_1): Add missing FALLTHRU comment.

gcc/config/avr/avr-passes.def

@@ -17,16 +17,8 @@
    along with GCC; see the file COPYING3.  If not see
    <http://www.gnu.org/licenses/>.  */
 
-/* casesi uses a SImode switch index which is quite costly as most code will
-   work on HImode or QImode.  The following pass runs right after .expand and
-   tries to fix such situations by operating on the original mode.  This
-   reduces code size and register pressure.
-
-   The assertion is that the code generated by casesi is unaltered and a
-   a sign-extend or zero-extend from QImode or HImode precedes the casesi
-   insns withaout any insns in between.  */
-
-INSERT_PASS_AFTER (pass_expand, 1, avr_pass_casesi);
+/* FIXME: We have to add the last pass first, otherwise
+          gen-pass-instances.awk won't work as expected. */
           
 /* This avr-specific pass (re)computes insn notes, in particular REG_DEAD
    notes which are used by `avr.c::reg_unused_after' and branch offset
@@ -37,3 +29,14 @@ INSERT_PASS_AFTER (pass_expand, 1, avr_pass_casesi);
    opportunity to rectify notes.  */
 
 INSERT_PASS_BEFORE (pass_free_cfg, 1, avr_pass_recompute_notes);
+
+/* casesi uses a SImode switch index which is quite costly as most code will
+   work on HImode or QImode.  The following pass runs right after .expand and
+   tries to fix such situations by operating on the original mode.  This
+   reduces code size and register pressure.
+
+   The assertion is that the code generated by casesi is unaltered and a
+   a sign-extend or zero-extend from QImode or HImode precedes the casesi
+   insns withaout any insns in between.  */
+
+INSERT_PASS_AFTER (pass_expand, 1, avr_pass_casesi);