[Gmp-commit] /var/hg/gmp: 6 new changesets
mercurial at gmplib.org
mercurial at gmplib.org
Fri Aug 23 22:53:05 UTC 2019
details: /var/hg/gmp/rev/08c7ffe1ae60
changeset: 17839:08c7ffe1ae60
user: Torbjorn Granlund <tg at gmplib.org>
date: Sat Aug 24 00:27:11 2019 +0200
description:
Remove x86_64/bt1/gcd_22.asm, add improved version as default x86_64/gcd_22.asm.
details: /var/hg/gmp/rev/9326aedc92a2
changeset: 17840:9326aedc92a2
user: Torbjorn Granlund <tg at gmplib.org>
date: Sat Aug 24 00:28:14 2019 +0200
description:
Removed, rely on top-level code instead.
details: /var/hg/gmp/rev/d74ca181fb4d
changeset: 17841:d74ca181fb4d
user: Torbjorn Granlund <tg at gmplib.org>
date: Sat Aug 24 00:45:56 2019 +0200
description:
Remove grabber, let configure find bd2 code instead.
details: /var/hg/gmp/rev/17a7226789e4
changeset: 17842:17a7226789e4
user: Torbjorn Granlund <tg at gmplib.org>
date: Sat Aug 24 00:47:10 2019 +0200
description:
Redirect grabber to new bd2 code.
details: /var/hg/gmp/rev/de1f24046f5f
changeset: 17843:de1f24046f5f
user: Torbjorn Granlund <tg at gmplib.org>
date: Sat Aug 24 00:50:09 2019 +0200
description:
Align function better. Improve 'lowz' code.
details: /var/hg/gmp/rev/bc69c16274d5
changeset: 17844:bc69c16274d5
user: Torbjorn Granlund <tg at gmplib.org>
date: Sat Aug 24 00:51:01 2019 +0200
description:
New code variant.
diffstat:
mpn/x86_64/bd2/gcd_22.asm | 145 ++++++++++++++++++++++++++++++++++
mpn/x86_64/bd4/gcd_22.asm | 37 --------
mpn/x86_64/bt1/gcd_22.asm | 171 -----------------------------------------
mpn/x86_64/core2/gcd_22.asm | 9 +-
mpn/x86_64/coreihwl/gcd_22.asm | 13 +-
mpn/x86_64/gcd_22.asm | 165 +++++++++++++++++++++++++++++++++++++++
mpn/x86_64/k10/gcd_22.asm | 9 +-
mpn/x86_64/k8/gcd_22.asm | 169 ----------------------------------------
mpn/x86_64/zen/gcd_22.asm | 2 +-
9 files changed, 322 insertions(+), 398 deletions(-)
diffs (truncated from 823 to 300 lines):
diff -r c9a8cea1d06d -r bc69c16274d5 mpn/x86_64/bd2/gcd_22.asm
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mpn/x86_64/bd2/gcd_22.asm Sat Aug 24 00:51:01 2019 +0200
@@ -0,0 +1,145 @@
+dnl AMD64 mpn_gcd_22. Assumes useless bsf, useless shrd, tzcnt, no shlx.
+
+dnl Copyright 2019 Free Software Foundation, Inc.
+
+dnl This file is part of the GNU MP Library.
+dnl
+dnl The GNU MP Library is free software; you can redistribute it and/or modify
+dnl it under the terms of either:
+dnl
+dnl * the GNU Lesser General Public License as published by the Free
+dnl Software Foundation; either version 3 of the License, or (at your
+dnl option) any later version.
+dnl
+dnl or
+dnl
+dnl * the GNU General Public License as published by the Free Software
+dnl Foundation; either version 2 of the License, or (at your option) any
+dnl later version.
+dnl
+dnl or both in parallel, as here.
+dnl
+dnl The GNU MP Library is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+dnl for more details.
+dnl
+dnl You should have received copies of the GNU General Public License and the
+dnl GNU Lesser General Public License along with the GNU MP Library. If not,
+dnl see https://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+
+C cycles/bit
+C AMD K8,K9 12.3
+C AMD K10 8.0
+C AMD bd1 10.0
+C AMD bd2 7.2
+C AMD bd3 ?
+C AMD bd4 6.7
+C AMD bt1 13.6
+C AMD bt2 8.9
+C AMD zn1 5.7
+C AMD zn2 5.6
+C Intel P4 ?
+C Intel CNR 9.7
+C Intel PNR 9.7
+C Intel NHM 9.4
+C Intel WSM 9.5
+C Intel SBR 10.3
+C Intel IBR ?
+C Intel HWL 8.2
+C Intel BWL 7.4
+C Intel SKL 7.3
+C Intel atom 26.5
+C Intel SLM 17.4
+C Intel GLM 13.4
+C Intel GLM+ 12.4
+C VIA nano ?
+
+
+define(`u1', `%rdi')
+define(`u0', `%rsi')
+define(`v1', `%rdx')
+define(`v0_param', `%rcx')
+
+define(`v0', `%rax')
+define(`cnt', `%rcx')
+
+define(`s0', `%r8')
+define(`s1', `%r9')
+define(`t0', `%r10')
+define(`t1', `%r11')
+
+dnl ABI_SUPPORT(DOS64) C returns mp_double_limb_t in memory
+ABI_SUPPORT(STD64)
+
+ASM_START()
+ TEXT
+ ALIGN(64)
+PROLOGUE(mpn_gcd_22)
+ FUNC_ENTRY(2)
+ mov v0_param, v0
+
+ ALIGN(16)
+L(top): mov v0, t0
+ sub u0, t0
+ jz L(lowz) C jump when low limb result = 0
+ mov v1, t1
+ sbb u1, t1
+
+ rep;bsf t0, cnt C tzcnt!
+ mov u0, s0
+ mov u1, s1
+
+ sub v0, u0
+ sbb v1, u1
+
+L(bck): cmovc t0, u0 C u = |u - v|
+ cmovc t1, u1 C u = |u - v|
+ cmovc s0, v0 C v = min(u,v)
+ cmovc s1, v1 C v = min(u,v)
+
+C Rightshift (u1,,u0) into (u1,,u0)
+L(shr): shr R8(cnt), u0
+ mov u1, t1
+ shr R8(cnt), u1
+ neg cnt
+ shl R8(cnt), t1
+ or t1, u0
+
+ test v1, v1
+ jnz L(top)
+ test u1, u1
+ jnz L(top)
+
+L(gcd_11):
+ mov v0, %rdi
+ mov u0, %rsi
+ TCALL( mpn_gcd_11)
+
+L(count_better):
+ rep;bsf u0, cnt C tzcnt!
+ jmp L(shr)
+
+L(lowz):C We come here when v0 - u0 = 0
+ C 1. If v1 - u1 = 0, then gcd is u = v.
+ C 2. Else compute gcd_21({v1,v0}, |u1-v1|)
+ mov v1, t0
+ sub u1, t0
+ je L(end)
+
+ xor t1, t1
+ mov u0, s0
+ mov u1, s1
+ mov u1, u0
+ xor u1, u1
+ sub v1, u0
+ jmp L(bck)
+
+L(end): C mov v0, %rax
+ C mov v1, %rdx
+ FUNC_EXIT()
+ ret
+EPILOGUE()
diff -r c9a8cea1d06d -r bc69c16274d5 mpn/x86_64/bd4/gcd_22.asm
--- a/mpn/x86_64/bd4/gcd_22.asm Thu Aug 22 22:32:45 2019 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,37 +0,0 @@
-dnl AMD64 mpn_gcd_22.
-
-dnl Copyright 2019 Free Software Foundation, Inc.
-
-dnl This file is part of the GNU MP Library.
-dnl
-dnl The GNU MP Library is free software; you can redistribute it and/or modify
-dnl it under the terms of either:
-dnl
-dnl * the GNU Lesser General Public License as published by the Free
-dnl Software Foundation; either version 3 of the License, or (at your
-dnl option) any later version.
-dnl
-dnl or
-dnl
-dnl * the GNU General Public License as published by the Free Software
-dnl Foundation; either version 2 of the License, or (at your option) any
-dnl later version.
-dnl
-dnl or both in parallel, as here.
-dnl
-dnl The GNU MP Library is distributed in the hope that it will be useful, but
-dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-dnl for more details.
-dnl
-dnl You should have received copies of the GNU General Public License and the
-dnl GNU Lesser General Public License along with the GNU MP Library. If not,
-dnl see https://www.gnu.org/licenses/.
-
-include(`../config.m4')
-
-dnl ABI_SUPPORT(DOS64) C returns mp_double_limb_t in memory
-ABI_SUPPORT(STD64)
-
-MULFUNC_PROLOGUE(mpn_gcd_22)
-include_mpn(`x86_64/coreihwl/gcd_22.asm')
diff -r c9a8cea1d06d -r bc69c16274d5 mpn/x86_64/bt1/gcd_22.asm
--- a/mpn/x86_64/bt1/gcd_22.asm Thu Aug 22 22:32:45 2019 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,171 +0,0 @@
-dnl AMD64 mpn_gcd_22. Assumes useless bsf, useless shrd, tzcnt, no shlx.
-
-dnl Copyright 2019 Free Software Foundation, Inc.
-
-dnl This file is part of the GNU MP Library.
-dnl
-dnl The GNU MP Library is free software; you can redistribute it and/or modify
-dnl it under the terms of either:
-dnl
-dnl * the GNU Lesser General Public License as published by the Free
-dnl Software Foundation; either version 3 of the License, or (at your
-dnl option) any later version.
-dnl
-dnl or
-dnl
-dnl * the GNU General Public License as published by the Free Software
-dnl Foundation; either version 2 of the License, or (at your option) any
-dnl later version.
-dnl
-dnl or both in parallel, as here.
-dnl
-dnl The GNU MP Library is distributed in the hope that it will be useful, but
-dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-dnl for more details.
-dnl
-dnl You should have received copies of the GNU General Public License and the
-dnl GNU Lesser General Public License along with the GNU MP Library. If not,
-dnl see https://www.gnu.org/licenses/.
-
-include(`../config.m4')
-
-
-C cycles/bit
-C AMD K8,K9 ?
-C AMD K10 ?
-C AMD bd1 9.83
-C AMD bd2 7.81
-C AMD bd3 ?
-C AMD bd4 ?
-C AMD bt1 9.0
-C AMD bt2 9.2
-C AMD zn1 ?
-C AMD zn2 ?
-C Intel P4 ?
-C Intel CNR ?
-C Intel PNR ?
-C Intel NHM ?
-C Intel WSM ?
-C Intel SBR ?
-C Intel IBR ?
-C Intel HWL ?
-C Intel BWL ?
-C Intel SKL ?
-C Intel atom ?
-C Intel SLM ?
-C Intel GLM ?
-C Intel GLM+ ?
-C VIA nano ?
-
-
-C ctz_table[n] is the number of trailing zeros on n, or MAXSHIFT if n==0.
-
-deflit(MAXSHIFT, 7)
-deflit(MASK, eval((m4_lshift(1,MAXSHIFT))-1))
-
-PROTECT(`ctz_table')
-
-DEF_OBJECT(ctz_table,64)
- .byte MAXSHIFT
-forloop(i,1,MASK,
-` .byte m4_count_trailing_zeros(i)
-')
-END_OBJECT(ctz_table)
-
-define(`u1', `%rdi')
-define(`u0', `%rsi')
-define(`v1', `%rdx')
-define(`v0_param', `%rcx')
-
-define(`v0', `%rax')
-define(`cnt', `%rcx')
-
-define(`s0', `%r8')
-define(`s1', `%r9')
-define(`t0', `%r10')
-define(`t1', `%r11')
-
-dnl ABI_SUPPORT(DOS64) C returns mp_double_limb_t in memory
-ABI_SUPPORT(STD64)
-
-ASM_START()
- TEXT
- ALIGN(16)
-PROLOGUE(mpn_gcd_22)
- FUNC_ENTRY(2)
- push %r12
- mov v0_param, v0
-
- LEA( ctz_table, %r12)
-
- ALIGN(16)
-L(top): mov v0, t0
- sub u0, t0
- jz L(lowz) C jump when low limb result = 0
- mov v1, t1
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