Provide alderlake submul_1.asm.

1 files changed, 116 insertions, 0 deletions

diff --git a/mpn/x86_64/alderlake/submul_1.asm b/mpn/x86_64/alderlake/submul_1.asm
new file mode 100644
index 000000000..9282fd968
--- /dev/null
+++ b/mpn/x86_64/alderlake/submul_1.asm
@@ -0,0 +1,116 @@
+dnl  AMD64 mpn_submul_1 for CPUs with mulx and adx.
+
+dnl  Contributed to the GNU project by Torbjörn Granlund.
+
+dnl  Copyright 2022 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/limb
+C AMD K8,K9	 -
+C AMD K10	 -
+C AMD bd1	 -
+C AMD bd2	 -
+C AMD bd3	 -
+C AMD bd4	 -
+C AMD zn1	 ?
+C AMD zn2	 ?
+C AMD zn3	 ?
+C AMD bt1	 -
+C AMD bt2	 -
+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 RKL	 ?
+C Intel ALD	 1.53
+C Intel atom	 -
+C Intel SLM	 -
+C Intel GLM	 -
+C VIA nano	 -
+
+define(`rp',      `%rdi')	dnl rcx
+define(`up',      `%rsi')	dnl rdx
+define(`n_param', `%rdx')	dnl r8
+define(`v0_param',`%rcx')	dnl r9
+
+define(`n',       `%rcx')	dnl
+define(`v0',      `%rdx')	dnl
+
+
+ASM_START()
+	TEXT
+	ALIGN(16)
+PROLOGUE(mpn_submul_1)
+	mov	n_param, %rax
+	mov	v0_param, v0
+	mov	%rax, n
+	test	$1, R8(n)
+	mov	$-1, %rax
+	adox(	%rax, %rax)		C Set OF
+	jz	L(b0)
+
+L(b1):	mov	$0, R32(%r8)
+	lea	-8(up), up
+	lea	-8(rp), rp
+	lea	1(n), n
+	jmp	L(lo1)
+
+L(b0):	mov	$0, R32(%r10)
+
+L(top):	mulx(	(up), %r9, %r8)
+	adcx(	%r10, %r9)
+	not	%r9
+	adox(	(rp), %r9)
+	mov	%r9, (rp)
+L(lo1):	mulx(	8,(up), %r11, %r10)
+	adcx(	%r8, %r11)
+	not	%r11
+	adox(	8,(rp), %r11)
+	mov	%r11, 8(rp)
+	lea	16(up), up
+	lea	16(rp), rp
+	lea	-2(n), n
+	jrcxz	L(end)
+	jmp	L(top)
+
+L(end):	adcx(	%rcx, %r10)
+	not	%r10
+	adox(	%rcx, %r10)
+	mov	%r10, %rax
+	neg	%rax
+	ret
+EPILOGUE()
+ASM_END()