diff options
Diffstat (limited to 'gcc/config/alpha/alpha.c')
| -rw-r--r-- | gcc/config/alpha/alpha.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index ecc915d..28fe467 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -1688,6 +1688,21 @@ alpha_secondary_reload (bool in_p, rtx x, reg_class_t rclass_i, return NO_REGS; } + +/* Implement TARGET_SECONDARY_MEMORY_NEEDED_MODE. If MODE is + floating-point, use it. Otherwise, widen to a word like the default. + This is needed because we always store integers in FP registers in + quadword format. This whole area is very tricky! */ + +static machine_mode +alpha_secondary_memory_needed_mode (machine_mode mode) +{ + if (GET_MODE_CLASS (mode) == MODE_FLOAT) + return mode; + if (GET_MODE_SIZE (mode) >= 4) + return mode; + return mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (mode), 0).require (); +} /* Given SEQ, which is an INSN list, look for any MEMs in either a SET_DEST or a SET_SRC and copy the in-struct, unchanging, and @@ -10062,6 +10077,8 @@ alpha_modes_tieable_p (machine_mode mode1, machine_mode mode2) #undef TARGET_SECONDARY_RELOAD #define TARGET_SECONDARY_RELOAD alpha_secondary_reload +#undef TARGET_SECONDARY_MEMORY_NEEDED_MODE +#define TARGET_SECONDARY_MEMORY_NEEDED_MODE alpha_secondary_memory_needed_mode #undef TARGET_SCALAR_MODE_SUPPORTED_P #define TARGET_SCALAR_MODE_SUPPORTED_P alpha_scalar_mode_supported_p |