X87: Change the test case for X87 RunRoundUint32ToFloat32.

test/cctest/compiler/test-run-machops.cc

Index: test/cctest/compiler/test-run-machops.cc
diff --git a/test/cctest/compiler/test-run-machops.cc b/test/cctest/compiler/test-run-machops.cc
index cea90a29b70971e64472d47ba57dec7ed30926d5..fba9e0e1a505e8ca89dd2866a51f50bb1af9c7fa 100644
--- a/test/cctest/compiler/test-run-machops.cc
+++ b/test/cctest/compiler/test-run-machops.cc
@@ -6163,7 +6163,10 @@ TEST(RunRoundInt32ToFloat32) {
 TEST(RunRoundUint32ToFloat32) {
   BufferedRawMachineAssemblerTester<float> m(MachineType::Uint32());
   m.Return(m.RoundUint32ToFloat32(m.Parameter(0)));
-  FOR_UINT32_INPUTS(i) { CHECK_EQ(static_cast<float>(*i), m.Call(*i)); }
+  FOR_UINT32_INPUTS(i) {
+    volatile float expected = static_cast<float>(*i);
+    CHECK_EQ(expected, m.Call(*i));
+  }
 }