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diff --git a/gas/testsuite/gas/arm/thumb2_mul-bad.s b/gas/testsuite/gas/arm/thumb2_mul-bad.s
new file mode 100644
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+++ b/gas/testsuite/gas/arm/thumb2_mul-bad.s
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+	.syntax unified
+	.text
+	.align	2
+	.global	thumb2_mul
+	.thumb
+	.thumb_func
+thumb2_mul:
+	itttt eq
+	# Cannot use 16-bit encoding because of use of high register.
+	muleq.n r0, r0, r8
+	# Cannot use 16-bit encoding because source does not match destination.
+	muleq.n r0, r1, r1
+	muleq.n r0, r1, r2
+	# There is no conditional "muls".
+	mulseq r0, r0, r1
+	# There is no 32-bit "muls".
+	muls.w r0, r0, r1
+	# Cannot use high registers with "muls".
+	muls r0, r0, r8
+	muls r0, r8, r0