smoketest f32 fast-math intrinsics

Author: RalfJung

tests/run-pass/float_fast_math.rs

@@ -3,7 +3,19 @@
 use std::intrinsics::{fadd_fast, fsub_fast, fmul_fast, fdiv_fast, frem_fast};
 
 #[inline(never)]
-pub fn test_operations(a: f64, b: f64) {
+pub fn test_operations_f64(a: f64, b: f64) {
+    // make sure they all map to the correct operation
+    unsafe {
+        assert_eq!(fadd_fast(a, b), a + b);
+        assert_eq!(fsub_fast(a, b), a - b);
+        assert_eq!(fmul_fast(a, b), a * b);
+        assert_eq!(fdiv_fast(a, b), a / b);
+        assert_eq!(frem_fast(a, b), a % b);
+    }
+}
+
+#[inline(never)]
+pub fn test_operations_f32(a: f32, b: f32) {
     // make sure they all map to the correct operation
     unsafe {
         assert_eq!(fadd_fast(a, b), a + b);
@@ -15,6 +27,8 @@ pub fn test_operations(a: f64, b: f64) {
 }
 
 fn main() {
-    test_operations(1., 2.);
-    test_operations(10., 5.);
+    test_operations_f64(1., 2.);
+    test_operations_f64(10., 5.);
+    test_operations_f32(11., 2.);
+    test_operations_f32(10., 15.);
 }