[simd] Disable Simd Scalar lowering for x64, enable tests for all other architectures.

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

Index: test/cctest/wasm/test-run-wasm-simd-lowering.cc
diff --git a/test/cctest/wasm/test-run-wasm-simd-lowering.cc b/test/cctest/wasm/test-run-wasm-simd-lowering.cc
index 69e770b9b87350d5767a7638f18584f9fca952cd..8e546498991ce0c0833750cbf33f85f3ecde87ee 100644
--- a/test/cctest/wasm/test-run-wasm-simd-lowering.cc
+++ b/test/cctest/wasm/test-run-wasm-simd-lowering.cc
@@ -15,6 +15,7 @@ using namespace v8::internal;
 using namespace v8::internal::compiler;
 using namespace v8::internal::wasm;
 
+#if !V8_TARGET_ARCH_X64

[bbudge, 2016/11/18 19:30:59]

Rather than comment out the code here, don't include these tests in the build
files.

[gdeepti, 2016/11/21 19:30:03]

Done.

 WASM_EXEC_TEST(Simd_I32x4_Splat) {
   FLAG_wasm_simd_prototype = true;
   WasmRunner<int32_t> r(kExecuteCompiled, MachineType::Int32());
@@ -94,3 +95,4 @@ WASM_EXEC_TEST(Simd_I32x4_Add_With_F32x4) {
             WASM_RETURN1(WASM_I32V(1)), WASM_RETURN1(WASM_I32V(0))));
   FOR_INT32_INPUTS(i) { CHECK_EQ(1, r.Call()); }
 }
+#endif  // V8_TARGET_ARCH_X64