X87: Change the test case for X87 RunRoundInt32ToFloat32.

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 77ae16bdebf868bbcdefc1dfb0be278ee3f8c046..d6b385c52ce7a88ed10b72f167b986882d68e7f2 100644
--- a/test/cctest/compiler/test-run-machops.cc
+++ b/test/cctest/compiler/test-run-machops.cc
@@ -6015,7 +6015,10 @@ TEST(RunBitcastFloat32ToInt32) {
 TEST(RunRoundInt32ToFloat32) {
   BufferedRawMachineAssemblerTester<float> m(MachineType::Int32());
   m.Return(m.RoundInt32ToFloat32(m.Parameter(0)));
-  FOR_INT32_INPUTS(i) { CHECK_EQ(static_cast<float>(*i), m.Call(*i)); }
+  FOR_INT32_INPUTS(i) {
+    volatile float expected = static_cast<float>(*i);
+    CHECK_EQ(expected, m.Call(*i));
+  }
 }