Convert SIMD wasm ops to runtime function calls

test/unittests/wasm/ast-decoder-unittest.cc

Index: test/unittests/wasm/ast-decoder-unittest.cc
diff --git a/test/unittests/wasm/ast-decoder-unittest.cc b/test/unittests/wasm/ast-decoder-unittest.cc
index fe1011574966a1eff77edb779ded31ee1808a0fc..02f19f361dff989ac941fb9011c6838769017089 100644
--- a/test/unittests/wasm/ast-decoder-unittest.cc
+++ b/test/unittests/wasm/ast-decoder-unittest.cc
@@ -909,6 +909,12 @@ TEST_F(AstDecoderTest, TypeConversions) {
   TestUnop(kExprF32ConvertF64, kAstF32, kAstF64);
 }
 
+/*
+TEST_F(AstDecoderTest, SimdOpcodes) {
+  TestUnop(kExprI32x4S128Splat, sigs.s_i());
+}
+*/
+
 TEST_F(AstDecoderTest, MacrosStmt) {
   VERIFY(WASM_SET_LOCAL(0, WASM_I32V_3(87348)));
   VERIFY(WASM_STORE_MEM(MachineType::Int32(), WASM_I8(24), WASM_I8(40)));