re PR target/72767 ([avr] Some branches report too small insn length)

	PR target/72767
	* config/avr/avr.md (length) [branch]: Correct insn length
	attribute for forward branches.

From-SVN: r238948

gcc/ChangeLog

 2016-08-01  Georg-Johann Lay  <avr@gjlay.de>
 
+	PR target/72767
+	* config/avr/avr.md (length) [branch]: Correct insn length
+	attribute for forward branches.
+
+2016-08-01  Georg-Johann Lay  <avr@gjlay.de>
+
 	* doc/extend.texi (AVR Built-in Functions): Document
 	__builtin_avr_nops.
 	* config/avr/builtins.def (NOPS): New.

gcc/config/avr/avr.md

@@ -112,12 +112,12 @@
 (define_attr "length" ""
   (cond [(eq_attr "type" "branch")
          (if_then_else (and (ge (minus (pc) (match_dup 0))
-                                (const_int -63))
+                                (const_int -62))
                             (le (minus (pc) (match_dup 0))
                                 (const_int 62)))
                        (const_int 1)
                        (if_then_else (and (ge (minus (pc) (match_dup 0))
-                                              (const_int -2045))
+                                              (const_int -2044))
                                           (le (minus (pc) (match_dup 0))
                                               (const_int 2045)))
                                      (const_int 2)