1 files changed, 27 insertions, 0 deletions
diff --git a/test/CodeGen/AVR/intrinsics/stacksave-restore.ll b/test/CodeGen/AVR/intrinsics/stacksave-restore.ll
new file mode 100644
index 0000000000000..3985f49b92f59
--- /dev/null
+++ b/test/CodeGen/AVR/intrinsics/stacksave-restore.ll
@@ -0,0 +1,27 @@
+; RUN: llc -O0 < %s -march=avr | FileCheck %s
+
+; CHECK-LABEL: foo
+define void @foo() {
+entry:
+  br label %save
+
+; CHECK-LABEL: save
+; CHECK: in [[SREG1:r[0-9]+]], 61
+; CHECK-NEXT: in [[SREG2:r[0-9]+]], 62
+save:
+  %saved = call i8* @llvm.stacksave()
+  br label %restore
+
+; CHECK-LABEL: restore
+; CHECK: in r0, 63
+; CHECK-NEXT: cli
+; CHECK-NEXT: out 62, [[SREG2]]
+; CHECK-NEXT: out 63, r0
+; CHECK-NEXT: out 61, [[SREG1]]
+restore:
+  call void @llvm.stackrestore(i8* %saved)
+  ret void
+}
+
+declare i8* @llvm.stacksave()
+declare void @llvm.stackrestore(i8* %ptr)