redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

s390: add alignment hints to vector load and store 

The z14 introduced alignment hints to increase the performance of
vector loads and stores. The kernel uses an implicit alignmenet
of 8 bytes for the vector registers, set the alignment hint to 3.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
hifive-unleashed-5.1
Martin Schwidefsky 2019-02-06 18:06:03 +01:00
parent f8b11e089a
commit 142c52d7bc
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/s390/include/asm/vx-insn.h
View File

@ -363,23 +363,23 @@
.endm
/* VECTOR LOAD MULTIPLE */
.macro VLM vfrom, vto, disp, base
.macro VLM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
MRXBOPC 0, 0x36, v1, v3
MRXBOPC \hint, 0x36, v1, v3
.endm
/* VECTOR STORE MULTIPLE */
.macro VSTM vfrom, vto, disp, base
.macro VSTM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
MRXBOPC 0, 0x3E, v1, v3
MRXBOPC \hint, 0x3E, v1, v3
.endm
/* VECTOR PERMUTE */