[Patch,AVR]: Add builtins.def and fix some ICE, add tests

Georg-Johann Lay avr@gjlay.de
Wed Feb 15 22:16:00 GMT 2012

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?


	* gcc.target/avr/torture/builtins-1.c: New test.
	* gcc.target/avr/torture/builtins-error.c: New test.
	* 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.
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