1 files changed, 35 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AVR/PR31344.ll b/llvm/test/CodeGen/AVR/PR31344.ll
new file mode 100644
index 00000000000..1e7bdb1370f
--- /dev/null
+++ b/llvm/test/CodeGen/AVR/PR31344.ll
@@ -0,0 +1,35 @@
+; RUN: llc < %s -march=avr | FileCheck %s
+
+; Unit test for: PR 31344
+
+define i16 @or16_reg_imm_0xff00(i16 %a) {
+; CHECK-LABEL: or16_reg_imm_0xff00
+; CHECK-NOT: ori {{r[0-9]+}}, 0
+; CHECK: ori {{r[0-9]+}}, 255
+    %result = or i16 %a, 65280
+    ret i16 %result
+}
+
+define i16 @or16_reg_imm_0xffb3(i16 %a) {
+; CHECK-LABEL: or16_reg_imm_0xffb3
+; CHECK: ori {{r[0-9]+}}, 179
+; CHECK: ori {{r[0-9]+}}, 255
+    %result = or i16 %a, 65459
+    ret i16 %result
+}
+
+define i16 @or16_reg_imm_0x00ff(i16 %a) {
+; CHECK-LABEL: or16_reg_imm_0x00ff
+; CHECK: ori {{r[0-9]+}}, 255
+; CHECK-NOT: ori {{r[0-9]+}}, 0
+    %result = or i16 %a, 255
+    ret i16 %result
+}
+
+define i16 @or16_reg_imm_0xb3ff(i16 %a) {
+; CHECK-LABEL: or16_reg_imm_0xb3ff
+; CHECK: ori {{r[0-9]+}}, 255
+; CHECK: ori {{r[0-9]+}}, 179
+    %result = or i16 %a, 46079
+    ret i16 %result
+}