Re: [Patch][Aarch64] Implement Aarch64 SIMD ABI and aarch64_vector_pcs attribute

[Steve Ellcey <sellcey@cavium.com>]

Ping.  Any feedback from the Aarch64 maintainers?

Steve Ellcey
sellcey@cavium.com



On Mon, 2018-08-20 at 10:37 -0700, Steve Ellcey wrote:
> On Tue, 2018-08-07 at 12:15 -0500, Segher Boessenkool wrote:
> 
> > 
> > > 
> > > +/* { dg-final { scan-assembler-not "\[ \t\]stp\tq\[01234567\]" }
> > > }
> > > */
> > That's [0-7] but maybe you find [01234567] more readable here.
> Segher,  I fixed all the issues you pointed out except this one.
>  Since
> there are some uses of non consecutive numbers in one of the tests I 
> decided to leave [01234567] instead of using [0-7].  Here is the 
> latest version of the patch, there are no semantic changes, just
> syntactical ones to address the issues that you pointed out.
> 
> Steve Ellcey
> sellcey@cavium.com
> 
> 
> 2018-08-20  Steve Ellcey  <sellcey@cavium.com>
> 
> 	* config/aarch64/aarch64-protos.h
> (aarch64_use_simple_return_insn_p):
> 	New prototype.
> 	(aarch64_epilogue_uses): Ditto.
> 	* config/aarch64/aarch64.c (aarch64_attribute_table): New
> array.
> 	(aarch64_simd_decl_p): New function.
> 	(aarch64_reg_save_mode): New function.
> 	(aarch64_is_simd_call_p): New function.
> 	(aarch64_function_ok_for_sibcall): Check for simd calls.
> 	(aarch64_layout_frame): Check for simd function.
> 	(aarch64_gen_storewb_pair): Handle E_TFmode.
> 	(aarch64_push_regs): Use aarch64_reg_save_mode to get mode.
> 	(aarch64_gen_loadwb_pair): Handle E_TFmode.
> 	(aarch64_pop_regs): Use aarch64_reg_save_mode to get mode.
> 	(aarch64_gen_store_pair): Handle E_TFmode.
> 	(aarch64_gen_load_pair): Ditto.
> 	(aarch64_save_callee_saves): Handle different mode sizes.
> 	(aarch64_restore_callee_saves): Ditto.
> 	(aarch64_components_for_bb): Check for simd function.
> 	(aarch64_epilogue_uses): New function.
> 	(aarch64_process_components): Check for simd function.
> 	(aarch64_expand_prologue): Ditto.
> 	(aarch64_expand_epilogue): Ditto.
> 	(aarch64_expand_call): Ditto.
> 	(TARGET_ATTRIBUTE_TABLE): New define.
> 	* config/aarch64/aarch64.h (EPILOGUE_USES): Redefine.
> 	(FP_SIMD_SAVED_REGNUM_P): New macro.
> 	* config/aarch64/aarch64.md (V23_REGNUM) New constant.
> 	(simple_return): New define_expand.
> 	(load_pair_dw_tftf): New instruction.
> 	(store_pair_dw_tftf): Ditto.
> 	(loadwb_pair<TX:mode>_<P:mode>): Ditto.
> 	("storewb_pair<TX:mode>_<P:mode>): Ditto.
> 
> 2018-08-20  Steve Ellcey  <sellcey@cavium.com>
> 
> 	* gcc.target/aarch64/torture/aarch64-torture.exp: New file.
> 	* gcc.target/aarch64/torture/simd-abi-1.c: New test.
> 	* gcc.target/aarch64/torture/simd-abi-2.c: Ditto.
> 	* gcc.target/aarch64/torture/simd-abi-3.c: Ditto.
> 	* gcc.target/aarch64/torture/simd-abi-4.c: Ditto.