diff options
Diffstat (limited to 'gcc/config/s390/s390.c')
| -rw-r--r-- | gcc/config/s390/s390.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index 53082ecca64..46d6c32bd9c 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -496,7 +496,7 @@ struct GTY(()) machine_function CONST_OK_FOR_CONSTRAINT_P((x), 'O', "On") #define REGNO_PAIR_OK(REGNO, MODE) \ - (HARD_REGNO_NREGS ((REGNO), (MODE)) == 1 || !((REGNO) & 1)) + (s390_hard_regno_nregs ((REGNO), (MODE)) == 1 || !((REGNO) & 1)) /* That's the read ahead of the dynamic branch prediction unit in bytes on a z10 (or higher) CPU. */ @@ -10383,7 +10383,32 @@ s390_optimize_nonescaping_tx (void) return; } -/* Implement TARGET_HARD_REGNO_MODE_OK. */ +/* Implement TARGET_HARD_REGNO_NREGS. Because all registers in a class + have the same size, this is equivalent to CLASS_MAX_NREGS. */ + +static unsigned int +s390_hard_regno_nregs (unsigned int regno, machine_mode mode) +{ + return s390_class_max_nregs (REGNO_REG_CLASS (regno), mode); +} + +/* Implement TARGET_HARD_REGNO_MODE_OK. + + Integer modes <= word size fit into any GPR. + Integer modes > word size fit into successive GPRs, starting with + an even-numbered register. + SImode and DImode fit into FPRs as well. + + Floating point modes <= word size fit into any FPR or GPR. + Floating point modes > word size (i.e. DFmode on 32-bit) fit + into any FPR, or an even-odd GPR pair. + TFmode fits only into an even-odd FPR pair. + + Complex floating point modes fit either into two FPRs, or into + successive GPRs (again starting with an even number). + TCmode fits only into two successive even-odd FPR pairs. + + Condition code modes fit only into the CC register. */ static bool s390_hard_regno_mode_ok (unsigned int regno, machine_mode mode) @@ -15977,6 +16002,8 @@ s390_asan_shadow_offset (void) #undef TARGET_HARD_REGNO_SCRATCH_OK #define TARGET_HARD_REGNO_SCRATCH_OK s390_hard_regno_scratch_ok +#undef TARGET_HARD_REGNO_NREGS +#define TARGET_HARD_REGNO_NREGS s390_hard_regno_nregs #undef TARGET_HARD_REGNO_MODE_OK #define TARGET_HARD_REGNO_MODE_OK s390_hard_regno_mode_ok #undef TARGET_MODES_TIEABLE_P |