mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
power7 memcpy VSX optimizations
This commit is contained in:
Will Schmidt
Ulrich Drepper
parent
a450513e1d
commit
5025581e1c
@ -1,3 +1,9 @@
|
||||
2011-07-28 Will Schmidt <will_schmidt@vnet.ibm.com>
|
||||
|
||||
* sysdeps/powerpc/powerpc32/power7/memcpy.S: Optimize the
|
||||
aligned copy for power7 with vector-scalar instructions.
|
||||
* sysdeps/powerpc/powerpc64/power7/memcpy.S: Likewise.
|
||||
|
||||
2011-07-24 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Simplify
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
/* Optimized memcpy implementation for PowerPC32/POWER7.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
Copyright (C) 2010, 2011 Free Software Foundation, Inc.
|
||||
Contributed by Luis Machado <luisgpm@br.ibm.com>.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
@ -116,24 +116,82 @@ L(copy_GE_32_aligned_cont):
|
||||
stfd 6,0(3)
|
||||
addi 10,3,8
|
||||
|
||||
L(aligned_copy):
|
||||
/* Main aligned copy loop. Copies up to 128-bytes at a time. */
|
||||
.align 4
|
||||
4: /* Main aligned copy loop. Copies 32-bytes at a time. */
|
||||
lfd 6,0(11)
|
||||
lfd 7,8(11)
|
||||
lfd 8,16(11)
|
||||
lfd 0,24(11)
|
||||
4:
|
||||
/* check for any 32-byte or 64-byte lumps that are outside of a
|
||||
nice 128-byte range. R8 contains the number of 32-byte
|
||||
lumps, so drop this into the CR, and use the SO/EQ bits to help
|
||||
handle the 32- or 64- byte lumps. Then handle the rest with an
|
||||
unrolled 128-bytes-at-a-time copy loop. */
|
||||
mtocrf 1,8
|
||||
li 6,16 # 16() index
|
||||
li 7,32 # 32() index
|
||||
li 8,48 # 48() index
|
||||
|
||||
L(aligned_32byte):
|
||||
/* if the SO bit (indicating a 32-byte lump) is not set, move along. */
|
||||
bns cr7,L(aligned_64byte)
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
addi 11,11,32
|
||||
|
||||
stfd 6,0(10)
|
||||
stfd 7,8(10)
|
||||
stfd 8,16(10)
|
||||
stfd 0,24(10)
|
||||
stxvd2x 6,0,10
|
||||
stxvd2x 7,10,6
|
||||
addi 10,10,32
|
||||
bdnz 4b
|
||||
|
||||
L(aligned_64byte):
|
||||
/* if the EQ bit (indicating a 64-byte lump) is not set, move along. */
|
||||
bne cr7,L(aligned_128setup)
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
lxvd2x 8,11,7
|
||||
lxvd2x 9,11,8
|
||||
addi 11,11,64
|
||||
stxvd2x 6,0,10
|
||||
stxvd2x 7,10,6
|
||||
stxvd2x 8,10,7
|
||||
stxvd2x 9,10,8
|
||||
addi 10,10,64
|
||||
|
||||
L(aligned_128setup):
|
||||
/* Set up for the 128-byte at a time copy loop. */
|
||||
srwi 8,31,7
|
||||
cmpwi 8,0 # Any 4x lumps left?
|
||||
beq 3f # if not, move along.
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
mtctr 8 # otherwise, load the ctr and begin.
|
||||
li 8,48 # 48() index
|
||||
b L(aligned_128loop)
|
||||
|
||||
L(aligned_128head):
|
||||
/* for the 2nd + iteration of this loop. */
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
L(aligned_128loop):
|
||||
lxvd2x 8,11,7
|
||||
lxvd2x 9,11,8
|
||||
stxvd2x 6,0,10
|
||||
addi 11,11,64
|
||||
stxvd2x 7,10,6
|
||||
stxvd2x 8,10,7
|
||||
stxvd2x 9,10,8
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
addi 10,10,64
|
||||
lxvd2x 8,11,7
|
||||
lxvd2x 9,11,8
|
||||
addi 11,11,64
|
||||
stxvd2x 6,0,10
|
||||
stxvd2x 7,10,6
|
||||
stxvd2x 8,10,7
|
||||
stxvd2x 9,10,8
|
||||
addi 10,10,64
|
||||
bdnz L(aligned_128head)
|
||||
|
||||
3:
|
||||
|
||||
/* Check for tail bytes. */
|
||||
|
||||
clrrwi 0,31,3
|
||||
mtcrf 0x01,31
|
||||
beq cr6,0f
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
/* Optimized memcpy implementation for PowerPC64/POWER7.
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
Copyright (C) 2010, 2011 Free Software Foundation, Inc.
|
||||
Contributed by Luis Machado <luisgpm@br.ibm.com>.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
@ -115,23 +115,81 @@ L(copy_GE_32_aligned_cont):
|
||||
std 6,0(3)
|
||||
addi 10,3,8
|
||||
|
||||
/* Main aligned copy loop. Copies 32-bytes at a time. */
|
||||
L(aligned_copy):
|
||||
/* Main aligned copy loop. Copies up to 128-bytes at a time. */
|
||||
.align 4
|
||||
4:
|
||||
ld 6,0(11)
|
||||
ld 7,8(11)
|
||||
ld 8,16(11)
|
||||
ld 0,24(11)
|
||||
/* check for any 32-byte or 64-byte lumps that are outside of a
|
||||
nice 128-byte range. R8 contains the number of 32-byte
|
||||
lumps, so drop this into the CR, and use the SO/EQ bits to help
|
||||
handle the 32- or 64- byte lumps. Then handle the rest with an
|
||||
unrolled 128-bytes-at-a-time copy loop. */
|
||||
mtocrf 1,8
|
||||
li 6,16 # 16() index
|
||||
li 7,32 # 32() index
|
||||
li 8,48 # 48() index
|
||||
|
||||
L(aligned_32byte):
|
||||
/* if the SO bit (indicating a 32-byte lump) is not set, move along. */
|
||||
bns cr7,L(aligned_64byte)
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
addi 11,11,32
|
||||
|
||||
std 6,0(10)
|
||||
std 7,8(10)
|
||||
std 8,16(10)
|
||||
std 0,24(10)
|
||||
stxvd2x 6,0,10
|
||||
stxvd2x 7,10,6
|
||||
addi 10,10,32
|
||||
bdnz 4b
|
||||
3:
|
||||
|
||||
L(aligned_64byte):
|
||||
/* if the EQ bit (indicating a 64-byte lump) is not set, move along. */
|
||||
bne cr7,L(aligned_128setup)
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
lxvd2x 8,11,7
|
||||
lxvd2x 9,11,8
|
||||
addi 11,11,64
|
||||
stxvd2x 6,0,10
|
||||
stxvd2x 7,10,6
|
||||
stxvd2x 8,10,7
|
||||
stxvd2x 9,10,8
|
||||
addi 10,10,64
|
||||
|
||||
L(aligned_128setup):
|
||||
/* Set up for the 128-byte at a time copy loop. */
|
||||
srdi 8,31,7
|
||||
cmpdi 8,0 # Any 4x lumps left?
|
||||
beq 3f # if not, move along.
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
mtctr 8 # otherwise, load the ctr and begin.
|
||||
li 8,48 # 48() index
|
||||
b L(aligned_128loop)
|
||||
|
||||
L(aligned_128head):
|
||||
/* for the 2nd + iteration of this loop. */
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
L(aligned_128loop):
|
||||
lxvd2x 8,11,7
|
||||
lxvd2x 9,11,8
|
||||
stxvd2x 6,0,10
|
||||
addi 11,11,64
|
||||
stxvd2x 7,10,6
|
||||
stxvd2x 8,10,7
|
||||
stxvd2x 9,10,8
|
||||
lxvd2x 6,0,11
|
||||
lxvd2x 7,11,6
|
||||
addi 10,10,64
|
||||
lxvd2x 8,11,7
|
||||
lxvd2x 9,11,8
|
||||
addi 11,11,64
|
||||
stxvd2x 6,0,10
|
||||
stxvd2x 7,10,6
|
||||
stxvd2x 8,10,7
|
||||
stxvd2x 9,10,8
|
||||
addi 10,10,64
|
||||
bdnz L(aligned_128head)
|
||||
|
||||
3:
|
||||
/* Check for tail bytes. */
|
||||
rldicr 0,31,0,60
|
||||
mtcrf 0x01,31
|
||||
|
||||
Loading…
Reference in New Issue
Block a user