1 files changed, 34 insertions, 0 deletions
diff --git a/tests/codegen/lifetime_start_end.rs b/tests/codegen/lifetime_start_end.rs
new file mode 100644
index 000000000..471a0b8ce
--- /dev/null
+++ b/tests/codegen/lifetime_start_end.rs
@@ -0,0 +1,34 @@
+// compile-flags: -O -C no-prepopulate-passes -Zmir-opt-level=0
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: @test
+#[no_mangle]
+pub fn test() {
+    let a = 0u8;
+    &a; // keep variable in an alloca
+
+// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, {{i8\*|ptr}} %a)
+
+    {
+        let b = &Some(a);
+        &b; // keep variable in an alloca
+
+// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, {{.*}})
+
+// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, {{.*}})
+
+// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, {{.*}})
+
+// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, {{.*}})
+    }
+
+    let c = 1u8;
+    &c; // keep variable in an alloca
+
+// CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, {{i8\*|ptr}} %c)
+
+// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, {{i8\*|ptr}} %c)
+
+// CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, {{i8\*|ptr}} %a)
+}