1 files changed, 16 insertions, 0 deletions

diff --git a/tests/codegen-llvm/issues/issue-109328-split_first.rs b/tests/codegen-llvm/issues/issue-109328-split_first.rs
new file mode 100644
index 00000000000..26235edfc19
--- /dev/null
+++ b/tests/codegen-llvm/issues/issue-109328-split_first.rs
@@ -0,0 +1,16 @@
+//@ compile-flags: -Copt-level=3
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: @foo
+// CHECK-NEXT: {{.*}}:
+// CHECK-NEXT: getelementptr inbounds
+// CHECK-NEXT: load [[TYPE:i(32|64)]]
+// CHECK-NEXT: icmp eq [[TYPE]]
+// CHECK-NEXT: br i1
+#[no_mangle]
+pub fn foo(input: &mut &[u64]) -> Option<u64> {
+    let (first, rest) = input.split_first()?;
+    *input = rest;
+    Some(*first)
+}