1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/codegen/unchecked-float-casts.rs b/src/test/codegen/unchecked-float-casts.rs
new file mode 100644
index 000000000..4e3bfcd43
--- /dev/null
+++ b/src/test/codegen/unchecked-float-casts.rs
@@ -0,0 +1,36 @@
+// This file tests that we don't generate any code for saturation when using the
+// unchecked intrinsics.
+
+// compile-flags: -C opt-level=3
+// ignore-wasm32 the wasm target is tested in `wasm_casts_*`
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: @f32_to_u32
+#[no_mangle]
+pub fn f32_to_u32(x: f32) -> u32 {
+    // CHECK: fptoui
+    // CHECK-NOT: fcmp
+    // CHECK-NOT: icmp
+    // CHECK-NOT: select
+    unsafe { x.to_int_unchecked() }
+}
+
+// CHECK-LABEL: @f32_to_i32
+#[no_mangle]
+pub fn f32_to_i32(x: f32) -> i32 {
+    // CHECK: fptosi
+    // CHECK-NOT: fcmp
+    // CHECK-NOT: icmp
+    // CHECK-NOT: select
+    unsafe { x.to_int_unchecked() }
+}
+
+#[no_mangle]
+pub fn f64_to_u16(x: f64) -> u16 {
+    // CHECK: fptoui
+    // CHECK-NOT: fcmp
+    // CHECK-NOT: icmp
+    // CHECK-NOT: select
+    unsafe { x.to_int_unchecked() }
+}