runtime, cmd/compile, cmd/internal/obj: remove duff support for loong64

Change-Id: I44d6452933c8010f7dfbf821a32053f9d1cf151e
Reviewed-on: https://go-review.googlesource.com/c/go/+/700096
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>

2 files changed, 0 insertions, 932 deletions

diff --git a/src/runtime/duff_loong64.s b/src/runtime/duff_loong64.s
deleted file mode 100644
index b05502d91d..0000000000
--- a/src/runtime/duff_loong64.s
+++ /dev/null
@@ -1,907 +0,0 @@
-// Code generated by mkduff.go; DO NOT EDIT.
-// Run go generate from src/runtime to update.
-// See mkduff.go for comments.
-
-#include "textflag.h"
-
-TEXT runtime·duffzero<ABIInternal>(SB), NOSPLIT|NOFRAME, $0-0
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	MOVV	R0, (R20)
-	ADDV	$8, R20
-	RET
-
-TEXT runtime·duffcopy<ABIInternal>(SB), NOSPLIT|NOFRAME, $0-0
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	MOVV	(R20), R30
-	ADDV	$8, R20
-	MOVV	R30, (R21)
-	ADDV	$8, R21
-
-	RET
diff --git a/src/runtime/mkduff.go b/src/runtime/mkduff.go
index dfff084e80..75ff437f26 100644
--- a/src/runtime/mkduff.go
+++ b/src/runtime/mkduff.go
@@ -34,7 +34,6 @@ import (
 func main() {
 	gen("386", notags, zero386, copy386)
 	gen("arm", notags, zeroARM, copyARM)
-	gen("loong64", notags, zeroLOONG64, copyLOONG64)
 	gen("ppc64x", tagsPPC64x, zeroPPC64x, copyPPC64x)
 	gen("mips64x", tagsMIPS64x, zeroMIPS64x, copyMIPS64x)
 	gen("riscv64", notags, zeroRISCV64, copyRISCV64)
@@ -175,30 +174,6 @@ func copyARM64(w io.Writer) {
 	fmt.Fprintln(w, "\tRET")
 }
 
-func zeroLOONG64(w io.Writer) {
-	// R0: always zero
-	// R20: ptr to memory to be zeroed
-	// On return, R20 points to the last zeroed dword.
-	fmt.Fprintln(w, "TEXT runtime·duffzero<ABIInternal>(SB), NOSPLIT|NOFRAME, $0-0")
-	for i := 0; i < 128; i++ {
-		fmt.Fprintln(w, "\tMOVV\tR0, (R20)")
-		fmt.Fprintln(w, "\tADDV\t$8, R20")
-	}
-	fmt.Fprintln(w, "\tRET")
-}
-
-func copyLOONG64(w io.Writer) {
-	fmt.Fprintln(w, "TEXT runtime·duffcopy<ABIInternal>(SB), NOSPLIT|NOFRAME, $0-0")
-	for i := 0; i < 128; i++ {
-		fmt.Fprintln(w, "\tMOVV\t(R20), R30")
-		fmt.Fprintln(w, "\tADDV\t$8, R20")
-		fmt.Fprintln(w, "\tMOVV\tR30, (R21)")
-		fmt.Fprintln(w, "\tADDV\t$8, R21")
-		fmt.Fprintln(w)
-	}
-	fmt.Fprintln(w, "\tRET")
-}
-
 func tagsPPC64x(w io.Writer) {
 	fmt.Fprintln(w)
 	fmt.Fprintln(w, "//go:build ppc64 || ppc64le")