From d9615670b7d2b6b43d19d6e8706e9d504f91030e Mon Sep 17 00:00:00 2001
From: Kevin Enderby <enderby@apple.com>
Date: Fri, 10 Jan 2014 00:43:32 +0000
Subject: Fix a bug with the ARM thumb2 CBNZ and CBNZ instructions that branch
 to the next instruction.  This can not be encoded but can be turned into a
 NOP.

rdar://15062072


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198904 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/MC/ARM/thumb2-cbn-to-next-inst.s | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 test/MC/ARM/thumb2-cbn-to-next-inst.s

(limited to 'test/MC/ARM/thumb2-cbn-to-next-inst.s')

diff --git a/test/MC/ARM/thumb2-cbn-to-next-inst.s b/test/MC/ARM/thumb2-cbn-to-next-inst.s
new file mode 100644
index 0000000000..a7ad11b245
--- /dev/null
+++ b/test/MC/ARM/thumb2-cbn-to-next-inst.s
@@ -0,0 +1,33 @@
+@ RUN: llvm-mc -triple thumbv7-apple-darwin -filetype=obj -o %t.o %s
+@ RUN: llvm-objdump -triple thumbv7-apple-darwin -d %t.o | FileCheck %s
+
+.thumb
+start:
+.thumb_func start
+	add	 r1, r2, r3
+	cbnz	 r2, L1 @ this can't be encoded, must turn into a nop
+L1:
+	add	r4, r5, r6
+	cbnz	r2, L2
+	sub	r7, r8, r9
+L2:
+	add	r7, r8, r9
+	cbz	r2, L3 @ this can't be encoded, must turn into a nop
+L3:
+	add	r10, r11, r12
+	cbz	r2, L4
+	sub	r7, r8, r9
+L4:
+	add	r3, r4, r5
+
+@ CHECK: 0:	02 eb 03 01	add.w	r1, r2, r3
+@ CHECK: 4:	00 bf		nop
+@ CHECK: 6:	05 eb 06 04	add.w	r4, r5, r6
+@ CHECK: a:	0a b9		cbnz	r2, #2
+@ CHECK: c:	a8 eb 09 07	sub.w	r7, r8, r9
+@ CHECK: 10:	08 eb 09 07	add.w	r7, r8, r9
+@ CHECK: 14:	00 bf		nop
+@ CHECK: 16:	0b eb 0c 0a	add.w	r10, r11, r12
+@ CHECK: 1a:	0a b1		cbz	r2, #2
+@ CHECK: 1c:	a8 eb 09 07	sub.w	r7, r8, r9
+@ CHECK: 20:	04 eb 05 03	add.w	r3, r4, r5
-- 
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