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diff --git a/vere/ext/gmp/gen/aarch64-linux/mpn/copyd.s b/vere/ext/gmp/gen/aarch64-linux/mpn/copyd.s
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+	.text
+	.align	3
+	.globl	__gmpn_copyd 
+	.type	__gmpn_copyd,@function
+__gmpn_copyd:
+	add	x0, x0, x2, lsl #3
+	add	x1, x1, x2, lsl #3
+
+	cmp	x2, #3
+	b.le	.Lbc
+
+
+	tbz	x0, #3, .Lal2
+	sub	x1, x1, #8
+	ld1	{v22.1d}, [x1]
+	sub	x2, x2, #1
+	sub	x0, x0, #8
+	st1	{v22.1d}, [x0]
+
+.Lal2:	sub	x1, x1, #16
+	ld1	{v26.2d}, [x1]
+	sub	x2, x2, #6
+	sub	x0, x0, #16			
+	tbnz	x2, #63, .Lend
+
+	sub	x1, x1, #16			
+	mov	x12, #-16
+
+	.align	4
+.Ltop:	ld1	{v22.2d}, [x1], x12
+	st1	{v26.2d}, [x0], x12
+	ld1	{v26.2d}, [x1], x12
+	st1	{v22.2d}, [x0], x12
+	sub	x2, x2, #4
+	tbz	x2, #63, .Ltop
+
+	add	x1, x1, #16			
+
+.Lend:	st1	{v26.2d}, [x0]
+
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+.Lbc:	tbz	x2, #1, .Ltl1
+	sub	x1, x1, #16
+	ld1	{v22.2d}, [x1]
+	sub	x0, x0, #16
+	st1	{v22.2d}, [x0]
+.Ltl1:	tbz	x2, #0, .Ltl2
+	sub	x1, x1, #8
+	ld1	{v22.1d}, [x1]
+	sub	x0, x0, #8
+	st1	{v22.1d}, [x0]
+.Ltl2:	ret
+	.size	__gmpn_copyd,.-__gmpn_copyd