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|
dnl HP-PA 2.0 64-bit mpn_mul_1 -- Multiply a limb vector with a limb and store
dnl the result in a second limb vector.
dnl Copyright 1998-2000, 2002, 2003 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 8000,8200: 6.5
C 8500,8600,8700: 5.625
C The feed-in and wind-down code has not yet been scheduled. Many cycles
C could be saved there per call.
C DESCRIPTION:
C The main loop "BIG" is 4-way unrolled, mainly to allow
C effective use of ADD,DC. Delays in moving data via the cache from the FP
C registers to the IU registers, have demanded a deep software pipeline, and
C a lot of stack slots for partial products in flight.
C
C CODE STRUCTURE:
C save-some-registers
C do 0, 1, 2, or 3 limbs
C if done, restore-some-regs and return
C save-many-regs
C do 4, 8, ... limb
C restore-all-regs
C STACK LAYOUT:
C HP-PA stack grows upwards. We could allocate 8 fewer slots by using the
C slots marked FREE, as well as some slots in the caller's "frame marker".
C
C -00 <- r30
C -08 FREE
C -10 tmp
C -18 tmp
C -20 tmp
C -28 tmp
C -30 tmp
C -38 tmp
C -40 tmp
C -48 tmp
C -50 tmp
C -58 tmp
C -60 tmp
C -68 tmp
C -70 tmp
C -78 tmp
C -80 tmp
C -88 tmp
C -90 FREE
C -98 FREE
C -a0 FREE
C -a8 FREE
C -b0 r13
C -b8 r12
C -c0 r11
C -c8 r10
C -d0 r8
C -d8 r8
C -e0 r7
C -e8 r6
C -f0 r5
C -f8 r4
C -100 r3
C Previous frame:
C [unused area]
C -38/-138 vlimb home slot. For 2.0N, the vlimb arg will arrive here.
include(`../config.m4')
C INPUT PARAMETERS:
define(`rp',`%r26') C
define(`up',`%r25') C
define(`n',`%r24') C
define(`vlimb',`%r23') C
define(`climb',`%r23') C
ifdef(`HAVE_ABI_2_0w',
` .level 2.0w
',` .level 2.0
')
PROLOGUE(mpn_mul_1)
ifdef(`HAVE_ABI_2_0w',
` std vlimb, -0x38(%r30) C store vlimb into "home" slot
')
std,ma %r3, 0x100(%r30)
std %r4, -0xf8(%r30)
std %r5, -0xf0(%r30)
ldo 0(%r0), climb C clear climb
fldd -0x138(%r30), %fr8 C put vlimb in fp register
define(`p032a1',`%r1') C
define(`p032a2',`%r19') C
define(`m032',`%r20') C
define(`m096',`%r21') C
define(`p000a',`%r22') C
define(`p064a',`%r29') C
define(`s000',`%r31') C
define(`ma000',`%r4') C
define(`ma064',`%r20') C
C define(`r000',`%r3') C FIXME don't save r3 for n < 4.
extrd,u n, 63, 2, %r5
cmpb,= %r5, %r0, L(BIG)
nop
fldd 0(up), %fr4
ldo 8(up), up
xmpyu %fr8R, %fr4L, %fr22
xmpyu %fr8L, %fr4R, %fr23
fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
xmpyu %fr8R, %fr4R, %fr24
xmpyu %fr8L, %fr4L, %fr25
fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
fstd %fr24, -0x80(%r30) C low product to -0x80..-0x79
addib,<> -1, %r5, L(two_or_more)
fstd %fr25, -0x68(%r30) C high product to -0x68..-0x61
LDEF(one)
ldd -0x78(%r30), p032a1
ldd -0x70(%r30), p032a2
ldd -0x80(%r30), p000a
b L(0_one_out)
ldd -0x68(%r30), p064a
LDEF(two_or_more)
fldd 0(up), %fr4
ldo 8(up), up
xmpyu %fr8R, %fr4L, %fr22
xmpyu %fr8L, %fr4R, %fr23
ldd -0x78(%r30), p032a1
fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
xmpyu %fr8R, %fr4R, %fr24
xmpyu %fr8L, %fr4L, %fr25
ldd -0x70(%r30), p032a2
fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
ldd -0x80(%r30), p000a
fstd %fr24, -0x80(%r30) C low product to -0x80..-0x79
ldd -0x68(%r30), p064a
addib,<> -1, %r5, L(three_or_more)
fstd %fr25, -0x68(%r30) C high product to -0x68..-0x61
LDEF(two)
add p032a1, p032a2, m032
add,dc %r0, %r0, m096
depd,z m032, 31, 32, ma000
extrd,u m032, 31, 32, ma064
b L(0_two_out)
depd m096, 31, 32, ma064
LDEF(three_or_more)
fldd 0(up), %fr4
add p032a1, p032a2, m032
add,dc %r0, %r0, m096
depd,z m032, 31, 32, ma000
extrd,u m032, 31, 32, ma064
C addib,= -1, %r5, L(0_out)
depd m096, 31, 32, ma064
LDEF(loop0)
C xmpyu %fr8R, %fr4L, %fr22
C xmpyu %fr8L, %fr4R, %fr23
C ldd -0x78(%r30), p032a1
C fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
C
C xmpyu %fr8R, %fr4R, %fr24
C xmpyu %fr8L, %fr4L, %fr25
C ldd -0x70(%r30), p032a2
C fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
C
C ldo 8(rp), rp
C add climb, p000a, s000
C ldd -0x80(%r30), p000a
C fstd %fr24, -0x80(%r30) C low product to -0x80..-0x79
C
C add,dc p064a, %r0, climb
C ldo 8(up), up
C ldd -0x68(%r30), p064a
C fstd %fr25, -0x68(%r30) C high product to -0x68..-0x61
C
C add ma000, s000, s000
C add,dc ma064, climb, climb
C fldd 0(up), %fr4
C
C std s000, -8(rp)
C
C add p032a1, p032a2, m032
C add,dc %r0, %r0, m096
C
C depd,z m032, 31, 32, ma000
C extrd,u m032, 31, 32, ma064
C addib,<> -1, %r5, L(loop0)
C depd m096, 31, 32, ma064
LDEF(0_out)
ldo 8(up), up
xmpyu %fr8R, %fr4L, %fr22
xmpyu %fr8L, %fr4R, %fr23
ldd -0x78(%r30), p032a1
fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
xmpyu %fr8R, %fr4R, %fr24
xmpyu %fr8L, %fr4L, %fr25
ldd -0x70(%r30), p032a2
fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
ldo 8(rp), rp
add climb, p000a, s000
ldd -0x80(%r30), p000a
fstd %fr24, -0x80(%r30) C low product to -0x80..-0x79
add,dc p064a, %r0, climb
ldd -0x68(%r30), p064a
fstd %fr25, -0x68(%r30) C high product to -0x68..-0x61
add ma000, s000, s000
add,dc ma064, climb, climb
std s000, -8(rp)
add p032a1, p032a2, m032
add,dc %r0, %r0, m096
depd,z m032, 31, 32, ma000
extrd,u m032, 31, 32, ma064
depd m096, 31, 32, ma064
LDEF(0_two_out)
ldd -0x78(%r30), p032a1
ldd -0x70(%r30), p032a2
ldo 8(rp), rp
add climb, p000a, s000
ldd -0x80(%r30), p000a
add,dc p064a, %r0, climb
ldd -0x68(%r30), p064a
add ma000, s000, s000
add,dc ma064, climb, climb
std s000, -8(rp)
LDEF(0_one_out)
add p032a1, p032a2, m032
add,dc %r0, %r0, m096
depd,z m032, 31, 32, ma000
extrd,u m032, 31, 32, ma064
depd m096, 31, 32, ma064
add climb, p000a, s000
add,dc p064a, %r0, climb
add ma000, s000, s000
add,dc ma064, climb, climb
std s000, 0(rp)
cmpib,>= 4, n, L(done)
ldo 8(rp), rp
C 4-way unrolled code.
LDEF(BIG)
define(`p032a1',`%r1') C
define(`p032a2',`%r19') C
define(`p096b1',`%r20') C
define(`p096b2',`%r21') C
define(`p160c1',`%r22') C
define(`p160c2',`%r29') C
define(`p224d1',`%r31') C
define(`p224d2',`%r3') C
C
define(`m032',`%r4') C
define(`m096',`%r5') C
define(`m160',`%r6') C
define(`m224',`%r7') C
define(`m288',`%r8') C
C
define(`p000a',`%r1') C
define(`p064a',`%r19') C
define(`p064b',`%r20') C
define(`p128b',`%r21') C
define(`p128c',`%r22') C
define(`p192c',`%r29') C
define(`p192d',`%r31') C
define(`p256d',`%r3') C
C
define(`s000',`%r10') C
define(`s064',`%r11') C
define(`s128',`%r12') C
define(`s192',`%r13') C
C
define(`ma000',`%r9') C
define(`ma064',`%r4') C
define(`ma128',`%r5') C
define(`ma192',`%r6') C
define(`ma256',`%r7') C
std %r6, -0xe8(%r30)
std %r7, -0xe0(%r30)
std %r8, -0xd8(%r30)
std %r9, -0xd0(%r30)
std %r10, -0xc8(%r30)
std %r11, -0xc0(%r30)
std %r12, -0xb8(%r30)
std %r13, -0xb0(%r30)
ifdef(`HAVE_ABI_2_0w',
` extrd,u n, 61, 62, n C right shift 2
',` extrd,u n, 61, 30, n C right shift 2, zero extend
')
LDEF(4_or_more)
fldd 0(up), %fr4
fldd 8(up), %fr5
fldd 16(up), %fr6
fldd 24(up), %fr7
xmpyu %fr8R, %fr4L, %fr22
xmpyu %fr8L, %fr4R, %fr23
xmpyu %fr8R, %fr5L, %fr24
xmpyu %fr8L, %fr5R, %fr25
xmpyu %fr8R, %fr6L, %fr26
xmpyu %fr8L, %fr6R, %fr27
fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
xmpyu %fr8R, %fr7L, %fr28
xmpyu %fr8L, %fr7R, %fr29
fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
xmpyu %fr8R, %fr4R, %fr30
xmpyu %fr8L, %fr4L, %fr31
fstd %fr24, -0x38(%r30) C mid product to -0x38..-0x31
xmpyu %fr8R, %fr5R, %fr22
xmpyu %fr8L, %fr5L, %fr23
fstd %fr25, -0x30(%r30) C mid product to -0x30..-0x29
xmpyu %fr8R, %fr6R, %fr24
xmpyu %fr8L, %fr6L, %fr25
fstd %fr26, -0x58(%r30) C mid product to -0x58..-0x51
xmpyu %fr8R, %fr7R, %fr26
fstd %fr27, -0x50(%r30) C mid product to -0x50..-0x49
addib,<> -1, n, L(8_or_more)
xmpyu %fr8L, %fr7L, %fr27
fstd %fr28, -0x18(%r30) C mid product to -0x18..-0x11
fstd %fr29, -0x10(%r30) C mid product to -0x10..-0x09
fstd %fr30, -0x80(%r30) C low product to -0x80..-0x79
fstd %fr31, -0x68(%r30) C high product to -0x68..-0x61
fstd %fr22, -0x40(%r30) C low product to -0x40..-0x39
fstd %fr23, -0x28(%r30) C high product to -0x28..-0x21
fstd %fr24, -0x60(%r30) C low product to -0x60..-0x59
fstd %fr25, -0x48(%r30) C high product to -0x48..-0x41
fstd %fr26, -0x20(%r30) C low product to -0x20..-0x19
fstd %fr27, -0x88(%r30) C high product to -0x88..-0x81
ldd -0x78(%r30), p032a1
ldd -0x70(%r30), p032a2
ldd -0x38(%r30), p096b1
ldd -0x30(%r30), p096b2
ldd -0x58(%r30), p160c1
ldd -0x50(%r30), p160c2
ldd -0x18(%r30), p224d1
ldd -0x10(%r30), p224d2
b L(end1)
nop
LDEF(8_or_more)
fstd %fr28, -0x18(%r30) C mid product to -0x18..-0x11
fstd %fr29, -0x10(%r30) C mid product to -0x10..-0x09
ldo 32(up), up
fstd %fr30, -0x80(%r30) C low product to -0x80..-0x79
fstd %fr31, -0x68(%r30) C high product to -0x68..-0x61
fstd %fr22, -0x40(%r30) C low product to -0x40..-0x39
fstd %fr23, -0x28(%r30) C high product to -0x28..-0x21
fstd %fr24, -0x60(%r30) C low product to -0x60..-0x59
fstd %fr25, -0x48(%r30) C high product to -0x48..-0x41
fstd %fr26, -0x20(%r30) C low product to -0x20..-0x19
fstd %fr27, -0x88(%r30) C high product to -0x88..-0x81
fldd 0(up), %fr4
fldd 8(up), %fr5
fldd 16(up), %fr6
fldd 24(up), %fr7
xmpyu %fr8R, %fr4L, %fr22
ldd -0x78(%r30), p032a1
xmpyu %fr8L, %fr4R, %fr23
xmpyu %fr8R, %fr5L, %fr24
ldd -0x70(%r30), p032a2
xmpyu %fr8L, %fr5R, %fr25
xmpyu %fr8R, %fr6L, %fr26
ldd -0x38(%r30), p096b1
xmpyu %fr8L, %fr6R, %fr27
fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
xmpyu %fr8R, %fr7L, %fr28
ldd -0x30(%r30), p096b2
xmpyu %fr8L, %fr7R, %fr29
fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
xmpyu %fr8R, %fr4R, %fr30
ldd -0x58(%r30), p160c1
xmpyu %fr8L, %fr4L, %fr31
fstd %fr24, -0x38(%r30) C mid product to -0x38..-0x31
xmpyu %fr8R, %fr5R, %fr22
ldd -0x50(%r30), p160c2
xmpyu %fr8L, %fr5L, %fr23
fstd %fr25, -0x30(%r30) C mid product to -0x30..-0x29
xmpyu %fr8R, %fr6R, %fr24
ldd -0x18(%r30), p224d1
xmpyu %fr8L, %fr6L, %fr25
fstd %fr26, -0x58(%r30) C mid product to -0x58..-0x51
xmpyu %fr8R, %fr7R, %fr26
ldd -0x10(%r30), p224d2
fstd %fr27, -0x50(%r30) C mid product to -0x50..-0x49
addib,= -1, n, L(end2)
xmpyu %fr8L, %fr7L, %fr27
LDEF(loop)
add p032a1, p032a2, m032
ldd -0x80(%r30), p000a
add,dc p096b1, p096b2, m096
fstd %fr28, -0x18(%r30) C mid product to -0x18..-0x11
add,dc p160c1, p160c2, m160
ldd -0x68(%r30), p064a
add,dc p224d1, p224d2, m224
fstd %fr29, -0x10(%r30) C mid product to -0x10..-0x09
add,dc %r0, %r0, m288
ldd -0x40(%r30), p064b
ldo 32(up), up
fstd %fr30, -0x80(%r30) C low product to -0x80..-0x79
depd,z m032, 31, 32, ma000
ldd -0x28(%r30), p128b
extrd,u m032, 31, 32, ma064
fstd %fr31, -0x68(%r30) C high product to -0x68..-0x61
depd m096, 31, 32, ma064
ldd -0x60(%r30), p128c
extrd,u m096, 31, 32, ma128
fstd %fr22, -0x40(%r30) C low product to -0x40..-0x39
depd m160, 31, 32, ma128
ldd -0x48(%r30), p192c
extrd,u m160, 31, 32, ma192
fstd %fr23, -0x28(%r30) C high product to -0x28..-0x21
depd m224, 31, 32, ma192
ldd -0x20(%r30), p192d
extrd,u m224, 31, 32, ma256
fstd %fr24, -0x60(%r30) C low product to -0x60..-0x59
depd m288, 31, 32, ma256
ldd -0x88(%r30), p256d
add climb, p000a, s000
fstd %fr25, -0x48(%r30) C high product to -0x48..-0x41
add,dc p064a, p064b, s064
add,dc p128b, p128c, s128
fstd %fr26, -0x20(%r30) C low product to -0x20..-0x19
add,dc p192c, p192d, s192
add,dc p256d, %r0, climb
fstd %fr27, -0x88(%r30) C high product to -0x88..-0x81
add ma000, s000, s000 C accum mid 0
fldd 0(up), %fr4
add,dc ma064, s064, s064 C accum mid 1
std s000, 0(rp)
add,dc ma128, s128, s128 C accum mid 2
fldd 8(up), %fr5
add,dc ma192, s192, s192 C accum mid 3
std s064, 8(rp)
add,dc ma256, climb, climb
fldd 16(up), %fr6
std s128, 16(rp)
xmpyu %fr8R, %fr4L, %fr22
ldd -0x78(%r30), p032a1
xmpyu %fr8L, %fr4R, %fr23
fldd 24(up), %fr7
xmpyu %fr8R, %fr5L, %fr24
ldd -0x70(%r30), p032a2
xmpyu %fr8L, %fr5R, %fr25
std s192, 24(rp)
xmpyu %fr8R, %fr6L, %fr26
ldd -0x38(%r30), p096b1
xmpyu %fr8L, %fr6R, %fr27
fstd %fr22, -0x78(%r30) C mid product to -0x78..-0x71
xmpyu %fr8R, %fr7L, %fr28
ldd -0x30(%r30), p096b2
xmpyu %fr8L, %fr7R, %fr29
fstd %fr23, -0x70(%r30) C mid product to -0x70..-0x69
xmpyu %fr8R, %fr4R, %fr30
ldd -0x58(%r30), p160c1
xmpyu %fr8L, %fr4L, %fr31
fstd %fr24, -0x38(%r30) C mid product to -0x38..-0x31
xmpyu %fr8R, %fr5R, %fr22
ldd -0x50(%r30), p160c2
xmpyu %fr8L, %fr5L, %fr23
fstd %fr25, -0x30(%r30) C mid product to -0x30..-0x29
xmpyu %fr8R, %fr6R, %fr24
ldd -0x18(%r30), p224d1
xmpyu %fr8L, %fr6L, %fr25
fstd %fr26, -0x58(%r30) C mid product to -0x58..-0x51
xmpyu %fr8R, %fr7R, %fr26
ldd -0x10(%r30), p224d2
fstd %fr27, -0x50(%r30) C mid product to -0x50..-0x49
xmpyu %fr8L, %fr7L, %fr27
addib,<> -1, n, L(loop)
ldo 32(rp), rp
LDEF(end2)
add p032a1, p032a2, m032
ldd -0x80(%r30), p000a
add,dc p096b1, p096b2, m096
fstd %fr28, -0x18(%r30) C mid product to -0x18..-0x11
add,dc p160c1, p160c2, m160
ldd -0x68(%r30), p064a
add,dc p224d1, p224d2, m224
fstd %fr29, -0x10(%r30) C mid product to -0x10..-0x09
add,dc %r0, %r0, m288
ldd -0x40(%r30), p064b
fstd %fr30, -0x80(%r30) C low product to -0x80..-0x79
depd,z m032, 31, 32, ma000
ldd -0x28(%r30), p128b
extrd,u m032, 31, 32, ma064
fstd %fr31, -0x68(%r30) C high product to -0x68..-0x61
depd m096, 31, 32, ma064
ldd -0x60(%r30), p128c
extrd,u m096, 31, 32, ma128
fstd %fr22, -0x40(%r30) C low product to -0x40..-0x39
depd m160, 31, 32, ma128
ldd -0x48(%r30), p192c
extrd,u m160, 31, 32, ma192
fstd %fr23, -0x28(%r30) C high product to -0x28..-0x21
depd m224, 31, 32, ma192
ldd -0x20(%r30), p192d
extrd,u m224, 31, 32, ma256
fstd %fr24, -0x60(%r30) C low product to -0x60..-0x59
depd m288, 31, 32, ma256
ldd -0x88(%r30), p256d
add climb, p000a, s000
fstd %fr25, -0x48(%r30) C high product to -0x48..-0x41
add,dc p064a, p064b, s064
add,dc p128b, p128c, s128
fstd %fr26, -0x20(%r30) C low product to -0x20..-0x19
add,dc p192c, p192d, s192
add,dc p256d, %r0, climb
fstd %fr27, -0x88(%r30) C high product to -0x88..-0x81
add ma000, s000, s000 C accum mid 0
add,dc ma064, s064, s064 C accum mid 1
add,dc ma128, s128, s128 C accum mid 2
add,dc ma192, s192, s192 C accum mid 3
add,dc ma256, climb, climb
std s000, 0(rp)
std s064, 8(rp)
ldd -0x78(%r30), p032a1
std s128, 16(rp)
ldd -0x70(%r30), p032a2
std s192, 24(rp)
ldd -0x38(%r30), p096b1
ldd -0x30(%r30), p096b2
ldd -0x58(%r30), p160c1
ldd -0x50(%r30), p160c2
ldd -0x18(%r30), p224d1
ldd -0x10(%r30), p224d2
ldo 32(rp), rp
LDEF(end1)
add p032a1, p032a2, m032
ldd -0x80(%r30), p000a
add,dc p096b1, p096b2, m096
add,dc p160c1, p160c2, m160
ldd -0x68(%r30), p064a
add,dc p224d1, p224d2, m224
add,dc %r0, %r0, m288
ldd -0x40(%r30), p064b
depd,z m032, 31, 32, ma000
ldd -0x28(%r30), p128b
extrd,u m032, 31, 32, ma064
depd m096, 31, 32, ma064
ldd -0x60(%r30), p128c
extrd,u m096, 31, 32, ma128
depd m160, 31, 32, ma128
ldd -0x48(%r30), p192c
extrd,u m160, 31, 32, ma192
depd m224, 31, 32, ma192
ldd -0x20(%r30), p192d
extrd,u m224, 31, 32, ma256
depd m288, 31, 32, ma256
ldd -0x88(%r30), p256d
add climb, p000a, s000
add,dc p064a, p064b, s064
add,dc p128b, p128c, s128
add,dc p192c, p192d, s192
add,dc p256d, %r0, climb
add ma000, s000, s000 C accum mid 0
add,dc ma064, s064, s064 C accum mid 1
add,dc ma128, s128, s128 C accum mid 2
add,dc ma192, s192, s192 C accum mid 3
add,dc ma256, climb, climb
std s000, 0(rp)
std s064, 8(rp)
std s128, 16(rp)
std s192, 24(rp)
ldd -0xb0(%r30), %r13
ldd -0xb8(%r30), %r12
ldd -0xc0(%r30), %r11
ldd -0xc8(%r30), %r10
ldd -0xd0(%r30), %r9
ldd -0xd8(%r30), %r8
ldd -0xe0(%r30), %r7
ldd -0xe8(%r30), %r6
LDEF(done)
ifdef(`HAVE_ABI_2_0w',
` copy climb, %r28
',` extrd,u climb, 63, 32, %r29
extrd,u climb, 31, 32, %r28
')
ldd -0xf0(%r30), %r5
ldd -0xf8(%r30), %r4
bve (%r2)
ldd,mb -0x100(%r30), %r3
EPILOGUE(mpn_mul_1)
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