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))'.
printf ("SUBREG_BYTE (");
print_test_rtx (os, test);
printf (")");
+ printf (".to_constant ()");
break;
case rtx_test::WIDE_INT_FIELD: