diff options
Diffstat (limited to 'gcc/config/s390/s390.c')
| -rw-r--r-- | gcc/config/s390/s390.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index 2c2647e..7cf56cc 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -1680,6 +1680,27 @@ s390_extra_constraint_str (rtx op, int c, const char * str) /* Return true if VALUE matches the constraint STR. */ int +s390_const_double_ok_for_constraint_p (rtx value, + int c, + const char * str) +{ + gcc_assert (c == str[0]); + + switch (str[0]) + { + case 'G': + /* The floating point zero constant. */ + return (GET_MODE_CLASS (GET_MODE (value)) == MODE_FLOAT + && value == CONST0_RTX (GET_MODE (value))); + + default: + return 0; + } +} + +/* Return true if VALUE matches the constraint STR. */ + +int s390_const_ok_for_constraint_p (HOST_WIDE_INT value, int c, const char * str) @@ -2190,6 +2211,11 @@ legitimate_reload_constant_p (rtx op) && larl_operand (op, VOIDmode)) return true; + /* Accept lzXX operands. */ + if (GET_CODE (op) == CONST_DOUBLE + && CONST_DOUBLE_OK_FOR_CONSTRAINT_P (op, 'G', "G")) + return true; + /* Everything else cannot be handled without reload. */ return false; } |