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diff --git a/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s b/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s
new file mode 100644
index 0000000..dba46af
--- /dev/null
+++ b/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s
@@ -0,0 +1,87 @@
+	.arch armv7-a
+	.global _start
+	.syntax unified
+	.text
+	.thumb
+
+	.macro do_calls
+	@ The following four instructions are accepted by gas, but generate
+	@ meaningless code.
+	@bl.w arm0
+	@bl.w arm4
+	@nop
+	@bl.w arm0
+	@bl.w arm4
+	@nop
+	blx.w arm0
+	blx.w arm4
+	nop
+	blx.w arm0
+	blx.w arm4
+	nop
+	bl.w thumb0
+	bl.w thumb2
+	bl.w thumb4
+	bl.w thumb6
+	nop
+	bl.w thumb0
+	bl.w thumb2
+	bl.w thumb4
+	bl.w thumb6
+	nop
+	@ These eight are all accepted by gas, but generate bad code.
+	@blx.w thumb0
+	@blx.w thumb2
+	@blx.w thumb4
+	@blx.w thumb6
+	@nop
+	@blx.w thumb0
+	@blx.w thumb2
+	@blx.w thumb4
+	@blx.w thumb6
+	.endm
+
+	.thumb_func
+	.align 3
+_start:
+	do_calls
+
+	.arm
+	.align 3
+arm0:
+	bx lr
+
+	.align 3
+	nop
+arm4:
+	bx lr
+
+	.thumb
+	.thumb_func
+	.align 3
+thumb0:
+	bx lr
+
+	.thumb_func
+	.align 3
+	nop
+thumb2:
+	bx lr
+
+	.thumb_func
+	.align 3
+	nop
+	nop
+thumb4:
+	bx lr
+
+	.thumb_func
+	.align 3
+	nop
+	nop
+	nop
+thumb6:
+	bx lr
+
+backwards:
+	do_calls