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igzip: Speed up hash table initialization in igzip_update_histogram.

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Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
Reviewed-by: Greg Tucker <greg.b.tucker@intel.com>
This commit is contained in:
Roy Oursler 2016-06-24 13:42:54 -04:00 committed by Greg Tucker
parent 39ce31de30
commit 4d40cd360d
1 changed files with 19 additions and 6 deletions
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25
igzip/igzip_update_histogram.asm
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@ -70,6 +70,15 @@ global %1
%define ytmp0 ymm0
%define ytmp1 ymm1
%if(ARCH == 01)
%define vtmp0 xtmp0
%define vtmp1 xtmp1
%define V_LENGTH 16
%else
%define vtmp0 ytmp0
%define vtmp1 ytmp1
%define V_LENGTH 32
%endif
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@ -162,10 +171,12 @@ skip1:
lea rfc_lookup, [rfc1951_lookup_table]
;; Init hash_table
mov rcx, (HASH_SIZE-1)
MOVDQU vtmp0, [D_vector]
mov rcx, (HASH_SIZE - V_LENGTH)
init_hash_table:
mov word [histogram + _hash_offset + 2*rcx], -(D+1)
sub rcx, 1
MOVDQU [histogram + _hash_offset + 2 * rcx], vtmp0
MOVDQU [histogram + _hash_offset + 2 * (rcx + V_LENGTH / 2)], vtmp0
sub rcx, V_LENGTH
jge init_hash_table
sub file_length, LA_STATELESS
@ -471,6 +482,8 @@ compare_loop2:
jmp len_dist_lit_huffman
section .data
align 4
const_D: dq D
const_30: dq 30
align 32
D_vector: dw -(D + 1), -(D + 1), -(D + 1), -(D + 1)
dw -(D + 1), -(D + 1), -(D + 1), -(D + 1)
dw -(D + 1), -(D + 1), -(D + 1), -(D + 1)
dw -(D + 1), -(D + 1), -(D + 1), -(D + 1)