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diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/sparc64/copyd.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/sparc64/copyd.asm
new file mode 100644
index 00000000000..ab105d39c78
--- /dev/null
+++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/sparc64/copyd.asm
@@ -0,0 +1,89 @@
+dnl SPARC v9 mpn_copyd -- Copy a limb vector, decrementing.
+
+dnl Copyright 1999-2003 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 UltraSPARC 1&2: 2
+C UltraSPARC 3: 2.5
+C UltraSPARC T1: 17
+C UltraSPARC T3: 6
+C UltraSPARC T4/T5: 2
+
+C INPUT PARAMETERS
+C rptr %o0
+C sptr %o1
+C n %o2
+
+ASM_START()
+ REGISTER(%g2,#scratch)
+ REGISTER(%g3,#scratch)
+PROLOGUE(mpn_copyd)
+ sllx %o2,3,%g1
+ add %g1,%o0,%o0
+ add %g1,%o1,%o1
+ addcc %o2,-8,%o2
+ bl,pt %xcc,L(end01234567)
+ nop
+L(loop1):
+ ldx [%o1-8],%g1
+ ldx [%o1-16],%g2
+ ldx [%o1-24],%g3
+ ldx [%o1-32],%g4
+ ldx [%o1-40],%g5
+ ldx [%o1-48],%o3
+ ldx [%o1-56],%o4
+ ldx [%o1-64],%o5
+ add %o1,-64,%o1
+ stx %g1,[%o0-8]
+ stx %g2,[%o0-16]
+ stx %g3,[%o0-24]
+ stx %g4,[%o0-32]
+ stx %g5,[%o0-40]
+ stx %o3,[%o0-48]
+ stx %o4,[%o0-56]
+ stx %o5,[%o0-64]
+ addcc %o2,-8,%o2
+ bge,pt %xcc,L(loop1)
+ add %o0,-64,%o0
+L(end01234567):
+ addcc %o2,8,%o2
+ bz,pn %xcc,L(end)
+ nop
+L(loop2):
+ ldx [%o1-8],%g1
+ add %o1,-8,%o1
+ addcc %o2,-1,%o2
+ stx %g1,[%o0-8]
+ bg,pt %xcc,L(loop2)
+ add %o0,-8,%o0
+L(end): retl
+ nop
+EPILOGUE(mpn_copyd)