[wasm] Adding a convolution matrix filter test to highlight the performance advantages of JITing

src/wasm/ast-decoder.cc

Index: src/wasm/ast-decoder.cc
diff --git a/src/wasm/ast-decoder.cc b/src/wasm/ast-decoder.cc
index facdab62eeecd7c568dc33180daee24dca7e1a88..cc0f26b0da8341d41b37a4f6aa43de6b6b6b70ff 100644
--- a/src/wasm/ast-decoder.cc
+++ b/src/wasm/ast-decoder.cc
@@ -17,7 +17,6 @@
 #include "src/ostreams.h"
 
 #include "src/compiler/wasm-compiler.h"
-
 namespace v8 {
 namespace internal {
 namespace wasm {
@@ -1030,8 +1029,9 @@ class WasmFullDecoder : public WasmDecoder {
                     BUILD(JITSingleFunction, base.node, length.node, index.node,
                           operand.sig_index, operand.sig, position());
                 Push(kAstI32, call);
-                break;
               }
+              len = 1 + operand.length;
+              break;
             }
           }
           default: