[wasm] Add utilities to print out WASM ast directly from the bytes.

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/wasm/wasm-macro-gen.h"
 
@@ skipping 3257 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
+
+
+void CompileCallIndirectMany(LocalType param) {
+  // Make sure we don't run out of registers when compiling indirect calls
+  // with many many parameters.
+  TestSignatures sigs;
+  for (byte num_params = 0; num_params < 40; num_params++) {
+    Zone zone;
+    HandleScope scope(CcTest::InitIsolateOnce());
+    TestingModule module;
+    FunctionSig* sig = sigs.many(&zone, kAstStmt, param, num_params);
+
+    module.AddSignature(sig);
+    module.AddSignature(sig);
+    module.AddIndirectFunctionTable(nullptr, 0);
+
+    WasmFunctionCompiler t(sig);
+    t.env.module = &module;
+
+    std::vector<byte> code;
+    ADD_CODE(code, kExprCallIndirect, 1);
+    ADD_CODE(code, kExprI8Const, 0);
+    for (byte p = 0; p < num_params; p++) {
+      ADD_CODE(code, kExprGetLocal, p);
+    }
+
+    t.Build(&code[0], &code[0] + code.size());
+    t.Compile(&module);
+  }
+}
+
+
+TEST(Compile_Wasm_CallIndirect_Many_i32) { CompileCallIndirectMany(kAstI32); }
+
+
+#if WASM_64
+TEST(Compile_Wasm_CallIndirect_Many_i64) { CompileCallIndirectMany(kAstI64); }
+#endif
+
+
+TEST(Compile_Wasm_CallIndirect_Many_f32) { CompileCallIndirectMany(kAstF32); }
+
+
+TEST(Compile_Wasm_CallIndirect_Many_f64) { CompileCallIndirectMany(kAstF64); }