[wasm-simd]: Move AIX sign patch into the utils header

After https://crrev.com/c/2773784, patch is also needed within
test-run-wasm-relaxed-simd.cc.

Change-Id: Id1efc905c52840eee7b382b90795574b889a7249
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2788408Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#73713}

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

@@ -86,13 +86,6 @@ using Shuffle = std::array<int8_t, kSimd128Size>;
   void RunWasm_##name##_Impl(LowerSimd lower_simd,                        \
                              TestExecutionTier execution_tier)
 
-// Generic expected value functions.
-template <typename T, typename = typename std::enable_if<
-                          std::is_floating_point<T>::value>::type>
-T Negate(T a) {
-  return -a;
-}
-
 // For signed integral types, use base::AddWithWraparound.
 template <typename T, typename = typename std::enable_if<
                           std::is_floating_point<T>::value>::type>
@@ -253,14 +246,6 @@ int64_t LessEqual(double a, double b) { return a <= b ? -1 : 0; }
                                     lane_index, WASM_LOCAL_GET(value))),       \
           WASM_RETURN1(WASM_ZERO))
 
-#if V8_OS_AIX
-template <typename T>
-bool MightReverseSign(T float_op) {
-  return float_op == static_cast<T>(Negate) ||
-         float_op == static_cast<T>(std::abs);
-}
-#endif
-
 WASM_SIMD_TEST(S128Globals) {
   WasmRunner<int32_t> r(execution_tier, lower_simd);
   // Set up a global to hold input and output vectors.

test/cctest/wasm/wasm-simd-utils.h

@@ -16,6 +16,21 @@ namespace wasm {
 
 using FloatUnOp = float (*)(float);
 
+// Generic expected value functions.
+template <typename T, typename = typename std::enable_if<
+                          std::is_floating_point<T>::value>::type>
+T Negate(T a) {
+  return -a;
+}
+
+#if V8_OS_AIX
+template <typename T>
+bool MightReverseSign(T float_op) {
+  return float_op == static_cast<T>(Negate) ||
+         float_op == static_cast<T>(std::abs);
+}
+#endif
+
 // Test some values not included in the float inputs from value_helper. These
 // tests are useful for opcodes that are synthesized during code gen, like Min
 // and Max on ia32 and x64.