X87: [wasm] Change the test case for Run_WasmCall_Float32Sub

test/cctest/wasm/test-run-wasm.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/base/utils/random-number-generator.h"
 
@@ skipping 2782 matching lines @@
   TestingModule module;
   BUILD(t, WASM_F32_SUB(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
   uint32_t index = t.CompileAndAdd(&module);
 
   // Builder the caller function.
   WasmRunner<float> r(MachineType::Float32(), MachineType::Float32());
   r.env()->module = &module;
   BUILD(r, WASM_CALL_FUNCTION(index, WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
 
   FOR_FLOAT32_INPUTS(i) {
-    FOR_FLOAT32_INPUTS(j) { CheckFloatEq(*i - *j, r.Call(*i, *j)); }
+    FOR_FLOAT32_INPUTS(j) {
+      volatile float expected = *i - *j;
+      CheckFloatEq(expected, r.Call(*i, *j));
+    }
   }
 }
 
 
 TEST(Run_WasmCall_Float64Sub) {
   WasmRunner<int32_t> r;
   TestingModule module;
   double* memory = module.AddMemoryElems<double>(16);
   r.env()->module = &module;
 
@@ skipping 750 matching lines @@
 TEST(Run_Wasm_F32CopySign) {
   WasmRunner<float> r(MachineType::Float32(), MachineType::Float32());
   BUILD(r, WASM_F32_COPYSIGN(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
 
   FOR_FLOAT32_INPUTS(i) {
     FOR_FLOAT32_INPUTS(j) { CheckFloatEq(copysign(*i, *j), r.Call(*i, *j)); }
   }
 }
 
 #endif