diff options
Diffstat (limited to 'gcc/config/ia64/ia64.h')
| -rw-r--r-- | gcc/config/ia64/ia64.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/gcc/config/ia64/ia64.h b/gcc/config/ia64/ia64.h index 578e3546644..59d6e230366 100644 --- a/gcc/config/ia64/ia64.h +++ b/gcc/config/ia64/ia64.h @@ -1008,17 +1008,11 @@ enum reg_class : ((CLASS) == FR_REGS && (MODE) == TFmode) ? 1 \ : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) -/* If defined, gives a class of registers that cannot be used as the - operand of a SUBREG that changes the mode of the object illegally. */ - -#define CLASS_CANNOT_CHANGE_MODE FR_REGS - -/* Defines illegal mode changes for CLASS_CANNOT_CHANGE_MODE. - In FP regs, we can't change FP values to integer values and vice +/* In FP regs, we can't change FP values to integer values and vice versa, but we can change e.g. DImode to SImode. */ -#define CLASS_CANNOT_CHANGE_MODE_P(FROM,TO) \ - (GET_MODE_CLASS (FROM) != GET_MODE_CLASS (TO)) +#define CANNOT_CHANGE_MODE_CLASS(FROM, TO) \ + (GET_MODE_CLASS (FROM) != GET_MODE_CLASS (TO) ? FR_REGS : NO_REGS) /* A C expression that defines the machine-dependent operand constraint letters (`I', `J', `K', .. 'P') that specify particular ranges of |