3 files changed, 50 insertions, 0 deletions
diff --git a/src/test/codegen/non-terminate/infinite-loop-1.rs b/src/test/codegen/non-terminate/infinite-loop-1.rs
new file mode 100644
index 00000000000..56b360e0a7f
--- /dev/null
+++ b/src/test/codegen/non-terminate/infinite-loop-1.rs
@@ -0,0 +1,17 @@
+// compile-flags: -C opt-level=3 -Z insert-sideeffect
+
+#![crate_type = "lib"]
+
+fn infinite_loop() -> u8 {
+    loop {}
+}
+
+// CHECK-LABEL: @test
+#[no_mangle]
+fn test() -> u8 {
+    // CHECK-NOT: unreachable
+    // CHECK: br label %{{.+}}
+    // CHECK-NOT: unreachable
+    let x = infinite_loop();
+    x
+}
diff --git a/src/test/codegen/non-terminate/infinite-loop-2.rs b/src/test/codegen/non-terminate/infinite-loop-2.rs
new file mode 100644
index 00000000000..2921ab6dc04
--- /dev/null
+++ b/src/test/codegen/non-terminate/infinite-loop-2.rs
@@ -0,0 +1,19 @@
+// compile-flags: -C opt-level=3 -Z insert-sideeffect
+
+#![crate_type = "lib"]
+
+fn infinite_loop() -> u8 {
+    let i = 2;
+    while i > 1 {}
+    1
+}
+
+// CHECK-LABEL: @test
+#[no_mangle]
+fn test() -> u8 {
+    // CHECK-NOT: unreachable
+    // CHECK: br label %{{.+}}
+    // CHECK-NOT: unreachable
+    let x = infinite_loop();
+    x
+}
diff --git a/src/test/codegen/non-terminate/infinite-recursion.rs b/src/test/codegen/non-terminate/infinite-recursion.rs
new file mode 100644
index 00000000000..1f292ce379f
--- /dev/null
+++ b/src/test/codegen/non-terminate/infinite-recursion.rs
@@ -0,0 +1,14 @@
+// compile-flags: -C opt-level=3 -Z insert-sideeffect
+
+#![crate_type = "lib"]
+
+#![allow(unconditional_recursion)]
+
+// CHECK-LABEL: @infinite_recursion
+#[no_mangle]
+fn infinite_recursion() -> u8 {
+    // CHECK-NOT: ret i8 undef
+    // CHECK: br label %{{.+}}
+    // CHECK-NOT: ret i8 undef
+    infinite_recursion()
+}