From 259a7a75ae67a7cafcb0db324f66af054e7a3600 Mon Sep 17 00:00:00 2001
From: David Venhoek <david@venhoek.nl>
Date: Sat, 25 Jun 2022 16:40:41 +0200
Subject: [PATCH] Added test for const arg lifetimes suggested by
 erikdesjardins.

---
 .../issue-98156-const-arg-temp-lifetime.rs    | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/test/codegen/issue-98156-const-arg-temp-lifetime.rs

diff --git a/src/test/codegen/issue-98156-const-arg-temp-lifetime.rs b/src/test/codegen/issue-98156-const-arg-temp-lifetime.rs
new file mode 100644
index 00000000000..12ace5fff6b
--- /dev/null
+++ b/src/test/codegen/issue-98156-const-arg-temp-lifetime.rs
@@ -0,0 +1,27 @@
+// This test checks that temporaries for indirectly-passed arguments get lifetime markers.
+
+// compile-flags: -O -C no-prepopulate-passes -Zmir-opt-level=0
+
+#![crate_type = "lib"]
+
+extern "Rust" {
+    fn f(x: [u8; 1024]);
+}
+
+const A: [u8; 1024] = [0; 1024];
+
+// CHECK-LABEL: @const_arg_indirect
+#[no_mangle]
+pub unsafe fn const_arg_indirect() {
+    // Ensure that the live ranges for the two argument temporaries don't overlap.
+
+    // CHECK: call void @llvm.lifetime.start
+    // CHECK: call void @f
+    // CHECK: call void @llvm.lifetime.end
+    // CHECK: call void @llvm.lifetime.start
+    // CHECK: call void @f
+    // CHECK: call void @llvm.lifetime.end
+
+    f(A);
+    f(A);
+}