From ba84ee42e8b41ba74e6fd5457892711940087ae3 Mon Sep 17 00:00:00 2001
From: Hans Wennborg <hans@hanshq.net>
Date: Wed, 8 Feb 2017 16:47:33 +0000
Subject: [PATCH] Forgot to add this in r294473

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_40@294474 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/ARM/machine-copyprop.mir | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 test/CodeGen/ARM/machine-copyprop.mir

diff --git a/test/CodeGen/ARM/machine-copyprop.mir b/test/CodeGen/ARM/machine-copyprop.mir
new file mode 100644
index 00000000000..9be595f690d
--- /dev/null
+++ b/test/CodeGen/ARM/machine-copyprop.mir
@@ -0,0 +1,22 @@
+# RUN: llc -o - %s -mtriple=armv7s-- -run-pass=machine-cp | FileCheck %s
+---
+# Test that machine copy prop recognizes the implicit-def operands on a COPY
+# as clobbering the register.
+# CHECK-LABEL: name: func
+# CHECK: %d2 = VMOVv2i32 2, 14, _
+# CHECK: %s5 = COPY %s0, implicit %q1, implicit-def %q1
+# CHECK: VST1q32 %r0, 0, %q1, 14, _
+# The following two COPYs must not be removed
+# CHECK: %s4 = COPY %s20, implicit-def %q1
+# CHECK: %s5 = COPY %s0, implicit killed %d0, implicit %q1, implicit-def %q1
+# CHECK: VST1q32 %r2, 0, %q1, 14, _
+name: func
+body: |
+  bb.0:
+    %d2 = VMOVv2i32 2, 14, _
+    %s5 = COPY %s0, implicit %q1, implicit-def %q1
+    VST1q32 %r0, 0, %q1, 14, _
+    %s4 = COPY %s20, implicit-def %q1
+    %s5 = COPY %s0, implicit killed %d0, implicit %q1, implicit-def %q1
+    VST1q32 %r2, 0, %q1, 14, _
+...
-- 
2.50.1