diff options
Diffstat (limited to 'gcc/config/sh/sh.c')
| -rw-r--r-- | gcc/config/sh/sh.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 22e3939..fa9f9ad 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -325,6 +325,7 @@ static void sh_init_sync_libfuncs (void) ATTRIBUTE_UNUSED; static unsigned int sh_hard_regno_nregs (unsigned int, machine_mode); static bool sh_hard_regno_mode_ok (unsigned int, machine_mode); static bool sh_modes_tieable_p (machine_mode, machine_mode); +static bool sh_can_change_mode_class (machine_mode, machine_mode, reg_class_t); static const struct attribute_spec sh_attribute_table[] = { @@ -653,6 +654,9 @@ static const struct attribute_spec sh_attribute_table[] = #undef TARGET_MODES_TIEABLE_P #define TARGET_MODES_TIEABLE_P sh_modes_tieable_p +#undef TARGET_CAN_CHANGE_MODE_CLASS +#define TARGET_CAN_CHANGE_MODE_CLASS sh_can_change_mode_class + struct gcc_target targetm = TARGET_INITIALIZER; @@ -10628,11 +10632,10 @@ sh_hard_regno_caller_save_mode (unsigned int regno, unsigned int nregs, return choose_hard_reg_mode (regno, nregs, false); } -/* Return the class of registers for which a mode change from FROM to TO - is invalid. */ -bool -sh_cannot_change_mode_class (machine_mode from, machine_mode to, - enum reg_class rclass) +/* Implement TARGET_CAN_CHANGE_MODE_CLASS. */ +static bool +sh_can_change_mode_class (machine_mode from, machine_mode to, + reg_class_t rclass) { /* We want to enable the use of SUBREGs as a means to VEC_SELECT a single element of a vector. */ @@ -10642,22 +10645,22 @@ sh_cannot_change_mode_class (machine_mode from, machine_mode to, on the stack with displacement addressing, as it happens with -O0. Thus we disallow the mode change for -O0. */ if (to == SFmode && VECTOR_MODE_P (from) && GET_MODE_INNER (from) == SFmode) - return optimize ? (reg_classes_intersect_p (GENERAL_REGS, rclass)) : false; + return optimize ? !reg_classes_intersect_p (GENERAL_REGS, rclass) : true; if (GET_MODE_SIZE (from) != GET_MODE_SIZE (to)) { if (TARGET_LITTLE_ENDIAN) { if (GET_MODE_SIZE (to) < 8 || GET_MODE_SIZE (from) < 8) - return reg_classes_intersect_p (DF_REGS, rclass); + return !reg_classes_intersect_p (DF_REGS, rclass); } else { if (GET_MODE_SIZE (from) < 8) - return reg_classes_intersect_p (DF_REGS, rclass); + return !reg_classes_intersect_p (DF_REGS, rclass); } } - return false; + return true; } /* Return true if registers in machine mode MODE will likely be |