1 files changed, 29 insertions, 0 deletions
diff --git a/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir b/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir
new file mode 100644
index 0000000000000..3e7fdcd400d21
--- /dev/null
+++ b/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir
@@ -0,0 +1,29 @@
+# RUN: llc -O0 %s -o - | FileCheck %s
+
+# This test checks the expansion of the 16-bit LDWRdPtr pseudo instruction.
+
+--- |
+  target triple = "avr--"
+  define void @test_ldwrdptr() {
+  entry:
+    ret void
+  }
+...
+
+---
+name:            test_ldwrdptr
+tracksRegLiveness: true
+body: |
+  bb.0.entry:
+
+    ; CHECK-LABEL: test_ldwrdptr
+
+    ; CHECK:      ld [[SCRATCH:r[0-9]+]], Z
+    ; CHECK-NEXT: push [[SCRATCH]]
+    ; CHECK-NEXT: ldd [[SCRATCH]], Z+1
+    ; CHECK-NEXT: mov r31, [[SCRATCH]]
+    ; CHECK-NEXT: pop r30
+
+    early-clobber %r31r30 = LDWRdPtr undef %r31r30
+...
+