[vec-cmp, patch 6/6, i386] Add i386 support for vector comparison

[Kirill Yukhin]

Hi Ilya,
On 08 Oct 18:32, Ilya Enkovich wrote:
> Hi,
> 
> This patch adds patterns for vec_cmp optabs.  Vector comparison expand code was moved from VEC_COND_EXPR expanders into a separate functions.  AVX-512 patterns use more simple masked versions.
> 
> Thanks,
> Ilya
> --
> gcc/
> 
> 2015-10-08  Ilya Enkovich  <enkovich.gnu@gmail.com>
> 
> 	* config/i386/i386-protos.h (ix86_expand_mask_vec_cmp): New.
> 	(ix86_expand_int_vec_cmp): New.
> 	(ix86_expand_fp_vec_cmp): New.
> 	* config/i386/i386.c (ix86_expand_sse_cmp): Allow NULL for
> 	op_true and op_false.
> 	(ix86_int_cmp_code_to_pcmp_immediate): New.
> 	(ix86_fp_cmp_code_to_pcmp_immediate): New.
> 	(ix86_cmp_code_to_pcmp_immediate): New.
> 	(ix86_expand_mask_vec_cmp): New.
> 	(ix86_expand_fp_vec_cmp): New.
> 	(ix86_expand_int_sse_cmp): New.
> 	(ix86_expand_int_vcond): Use ix86_expand_int_sse_cmp.
> 	(ix86_expand_fp_vcond): Use ix86_expand_sse_cmp.
> 	(ix86_expand_int_vec_cmp): New.
> 	(ix86_get_mask_mode): New.
> 	(TARGET_VECTORIZE_GET_MASK_MODE): New.
> 	* config/i386/sse.md (avx512fmaskmodelower): New.
> 	(vec_cmp<mode><avx512fmaskmodelower>): New.
> 	(vec_cmp<mode><sseintvecmodelower>): New.
> 	(vec_cmpv2div2di): New.
> 	(vec_cmpu<mode><avx512fmaskmodelower>): New.
> 	(vec_cmpu<mode><sseintvecmodelower>): New.
> 	(vec_cmpuv2div2di): New.

Patch is OK for trunk.
(Although vec_cmp and vec_cmpu might be merged w/ susbst).

--
Thanks, K