[PATCH] Fix type error of 'switch (SUBREG_BYTE (op)).'

[Jin Ma <jinma@linux.alibaba.com>]

For example:
(define_insn "mov_lowpart_sidi2"
  [(set (match_operand:SI            0 "register_operand" "=r")
        (subreg:SI (match_operand:DI 1 "register_operand" " r") 0))]
  "TARGET_64BIT"
  "mov\t%0,%1")

(define_insn "mov_highpart_sidi2"
  [(set (match_operand:SI            0 "register_operand" "=r")
        (subreg:SI (match_operand:DI 1 "register_operand" " r") 1))]
  "TARGET_64BIT"
  "movh\t%0,%1")

When defining the above patterns, the generated file insn-recog.cc will
appear 'switch (SUBREG_BYTE (op))', but since the return value of
SUBREG_BYTE is poly_uint16_pod, the following error will occur:
"error: switch quantity not an integer".

gcc/ChangeLog:

	* genrecog.cc (print_nonbool_test): Fix type error of
	'switch (SUBREG_BYTE (op))'.
---
 gcc/genrecog.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/genrecog.cc b/gcc/genrecog.cc
index 6dd375da5e3..04a5533ca4b 100644
--- a/gcc/genrecog.cc
+++ b/gcc/genrecog.cc
@@ -4619,6 +4619,7 @@ print_nonbool_test (output_state *os, const rtx_test &test)
       printf ("SUBREG_BYTE (");
       print_test_rtx (os, test);
       printf (")");
+      printf (".to_constant ()");
       break;
 
     case rtx_test::WIDE_INT_FIELD:
-- 
2.17.1