http://gcc.gnu.org/ml/gcc-patches/2012-02/msg00843.html
Georg-Johann Lay wrote: > This patch introduces a new file builtins.def that is used as central registry > to hold built-ins' information. > > The file is used by defining DEF_BUILTIN macre and then including the file as > described in the head comment of builtins.def. > > Up to here it's all code clean-up and no functional change. > > Moreover there are some minor changes and ICE fixes: > > * Fold __builtin_avr_swap to rotate <<< 4 > * Don't fold __builtin_avr_insert_bits if first arg is non-const (was ICE) > * Don't expand __builtin_avr_delay_cycles if arg is not-const (was ICE) > > Ok for trunk? > > Johann > > gcc/testsuite/ > * gcc.target/avr/torture/builtins-1.c: New test. > * gcc.target/avr/torture/builtins-error.c: New test. > gcc/ > * config/avr/builtins.def: New file. > * config/avr/t-avr (avr.o, avr-c.o): Depend on it. > * config/avr/avr.c (enum avr_builtin_id): Use it. > (avr_init_builtins): Use it. And use avr_bdesc. > (bdesc_1arg): Remove. > (bdesc_2arg): Remove. > (bdesc_3arg): Remove. > (struct avr_builtin_description): Add field n_args. > (avr_bdesc): New static variable using builtins.def. > (avr_expand_builtin): Use it. > Don't call avr_expand_delay_cycles if op0 is not CONST_INT. > (avr_fold_builtin): Fold AVR_BUILTIN_SWAP. > Don't fold AVR_BUILTIN_INSERT_BITS if arg0 is not INTEGER_CST.
