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igzip: Modify last byte retrieval method

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Change-Id: I3ba7e9bd007277be543ba7a6299d5acc5c848bd2
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
This commit is contained in:
Roy Oursler 2019-02-19 14:12:51 -07:00
parent 67c4e26580
commit 31eca5035f
1 changed files with 9 additions and 9 deletions
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18
igzip/encode_df_06.asm
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@ -113,6 +113,7 @@
%define zbits zmm12
%define zbits_count zmm13
%define zoffset_mask zmm14
%define znotoffset_mask zmm23
%define zq_64 zmm15
%define zlit_mask zmm16
@ -122,7 +123,6 @@
%define zmax_write zmm20
%define zrot_perm zmm21
%define zq_8 zmm22
%define zmin_write zmm23
%define VECTOR_SIZE 0x40
%define VECTOR_LOOP_PROCESSED (2 * VECTOR_SIZE)
@ -218,9 +218,10 @@ encode_deflate_icf_ %+ ARCH:
vbroadcasti64x2 zq_64, [q_64]
vbroadcasti64x2 zq_8, [q_8]
vbroadcasti64x2 zmin_write, [min_write_q]
vpbroadcastq zoffset_mask, [offset_mask]
vpternlogd znotoffset_mask, znotoffset_mask, zoffset_mask, 0x55
vpbroadcastd zlit_mask, [lit_mask]
vpbroadcastd zdist_mask, [dist_mask]
vpbroadcastd zlit_icr_mask, [lit_icr_mask]
@ -313,15 +314,16 @@ encode_deflate_icf_ %+ ARCH:
vpermq zbits_count_q {k5}{z}, zrot_perm, zbits_count
vpsllvq codes1, codes1, zbits_count_q
;; Check whether any of the last bytes overlap
vpcmpq k6 {k5}, code_lens1, zbits_count, 1
;; Get last byte in each qword
vpsrlq code_lens2, code_lens2, 3
vpaddq code_lens1, code_lens1, zbits_count_q
vpsrlq code_lens1, code_lens1, 3
vpaddq code_lens1, code_lens1, zq_8
vpshufb codes3 {k4}{z}, codes1, code_lens1
vpandq code_lens1, code_lens1, znotoffset_mask
vpsrlvq codes3, codes1, code_lens1
;; Check whether any of the last bytes overlap
vpcmpq k6 {k5}, code_lens1, zmin_write, 0
;; Branch to handle overlapping last bytes
ktestd k6, k6
jnz .small_codes
@ -587,8 +589,6 @@ rot_perm:
dq 0x00000003, 0x00000004, 0x00000005, 0x00000006
;; 16 byte data
min_write_q:
dq 0x00, 0x08, 0x00, 0x08, 0x00, 0x08, 0x00, 0x08
q_64:
dq 0x0000000000000040, 0x0000000000000000
q_8 :