[Patch 4/4][Aarch64] v2: Implement Aarch64 SIMD ABI

[Steve Ellcey]

On Mon, 2019-01-07 at 17:38 +0000, Richard Sandiford wrote:
> 
> Yeah, this was the kind of thing I had in mind, thanks.

Here is an updated version of the patch.  I bootstrapped and tested
on aarch64 and x86.  I didn't test the other platforms where I changed
the arguments to hard_regno_call_part_clobbered but I think they should
be OK.  I believe I addressed all the issues you brought up.  The ones
I am least confident of are the lra-lives.c changes.  I think they are
right and testing had no regressions, but they are probably the changes
that need to be checked most closely.

Steve Ellcey
sellcey@marvell.com


2019-01-08  Steve Ellcey  <sellcey@marvell.com>

	* config/aarch64/aarch64.c (aarch64_simd_call_p): New function.
	(aarch64_hard_regno_call_part_clobbered): Add insn argument.
	(aarch64_return_call_with_max_clobbers): New function.
	(TARGET_RETURN_CALL_WITH_MAX_CLOBBERS): New macro.
	* config/avr/avr.c (avr_hard_regno_call_part_clobbered): Add insn
	argument.
	* config/i386/i386.c (ix86_hard_regno_call_part_clobbered): Ditto.
	* config/mips/mips.c (mips_hard_regno_call_part_clobbered): Ditto.
	* config/rs6000/rs6000.c (rs6000_hard_regno_call_part_clobbered): Ditto.
	* config/s390/s390.c (s390_hard_regno_call_part_clobbered): Ditto.
	* cselib.c (cselib_process_insn): Add argument to
	targetm.hard_regno_call_part_clobbered call.
	* ira-conflicts.c (ira_build_conflicts): Ditto.
	* ira-costs.c (ira_tune_allocno_costs): Ditto.
	* lra-constraints.c (inherit_reload_reg): Ditto.
	* lra-int.h (struct lra_reg): Add call_insn field.
	* lra-lives.c (check_pseudos_live_through_calls): Add call_insn
	argument.  Call targetm.return_call_with_max_clobbers.
	Add argument to targetm.hard_regno_call_part_clobbered call.
	(process_bb_lives): Use new target function
	targetm.return_call_with_max_clobbers to set call_insn.
	Pass call_insn to check_pseudos_live_through_calls.
	Modify if to check targetm.return_call_with_max_clobbers.
	* lra.c (initialize_lra_reg_info_element): Set call_insn to NULL.
	* regcprop.c (copyprop_hardreg_forward_1): Add argument to
        targetm.hard_regno_call_part_clobbered call.
	* reginfo.c (choose_hard_reg_mode): Ditto.
	* regrename.c (check_new_reg_p): Ditto.
	* reload.c (find_equiv_reg): Ditto.
	* reload1.c (emit_reload_insns): Ditto.
	* sched-deps.c (deps_analyze_insn): Ditto.
	* sel-sched.c (init_regs_for_mode): Ditto.
	(mark_unavailable_hard_regs): Ditto.
	* targhooks.c (default_dwarf_frame_reg_mode): Ditto.
	* target.def (hard_regno_call_part_clobbered): Add insn argument.
	(return_call_with_max_clobbers): New target function.
	* doc/tm.texi: Regenerate.
	* doc/tm.texi.in (TARGET_RETURN_CALL_WITH_MAX_CLOBBERS): New hook.
	* hooks.c (hook_bool_uint_mode_false): Change to
	hook_bool_insn_uint_mode_false.
	* hooks.h (hook_bool_uint_mode_false): Ditto.
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