[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 2819 matching lines @@
       }
     }
   }
 }
 
 
 #endif
 
 
 TEST(Run_Wasm_SimpleCallIndirect) {
-  Isolate* isolate = CcTest::InitIsolateOnce();
-
   WasmRunner<int32_t> r(MachineType::Int32());
   TestSignatures sigs;
   TestingModule module;
   r.env()->module = &module;
   WasmFunctionCompiler t1(sigs.i_ii());
   BUILD(t1, WASM_I32_ADD(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
-  t1.CompileAndAdd(&module);
+  t1.CompileAndAdd(&module, /*sig_index*/ 1);
 
   WasmFunctionCompiler t2(sigs.i_ii());
   BUILD(t2, WASM_I32_SUB(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
-  t2.CompileAndAdd(&module);
+  t2.CompileAndAdd(&module, /*sig_index*/ 1);
 
   // Signature table.
   module.AddSignature(sigs.f_ff());
   module.AddSignature(sigs.i_ii());
   module.AddSignature(sigs.d_dd());
 
   // Function table.
-  int table_size = 2;
-  module.module->function_table = new std::vector<uint16_t>;
-  module.module->function_table->push_back(0);
-  module.module->function_table->push_back(1);
-
-  // Function table.
-  Handle<FixedArray> fixed = isolate->factory()->NewFixedArray(2 * table_size);
-  fixed->set(0, Smi::FromInt(1));
-  fixed->set(1, Smi::FromInt(1));
-  fixed->set(2, *module.function_code->at(0));
-  fixed->set(3, *module.function_code->at(1));
-  module.function_table = fixed;
+  int table[] = {0, 1};
+  module.AddIndirectFunctionTable(table, 2);
+  module.PopulateIndirectFunctionTable();
 
   // Builder the caller function.
   BUILD(r, WASM_CALL_INDIRECT(1, WASM_GET_LOCAL(0), WASM_I8(66), WASM_I8(22)));
 
   CHECK_EQ(88, r.Call(0));
   CHECK_EQ(44, r.Call(1));
   CHECK_TRAP(r.Call(2));
 }
 
 
 TEST(Run_Wasm_MultipleCallIndirect) {
-  Isolate* isolate = CcTest::InitIsolateOnce();
-
   WasmRunner<int32_t> r(MachineType::Int32(), MachineType::Int32(),
                         MachineType::Int32());
   TestSignatures sigs;
   TestingModule module;
   r.env()->module = &module;
   WasmFunctionCompiler t1(sigs.i_ii());
   BUILD(t1, WASM_I32_ADD(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
-  t1.CompileAndAdd(&module);
+  t1.CompileAndAdd(&module, /*sig_index*/ 1);
 
   WasmFunctionCompiler t2(sigs.i_ii());
   BUILD(t2, WASM_I32_SUB(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
-  t2.CompileAndAdd(&module);
+  t2.CompileAndAdd(&module, /*sig_index*/ 1);
 
   // Signature table.
   module.AddSignature(sigs.f_ff());
   module.AddSignature(sigs.i_ii());
   module.AddSignature(sigs.d_dd());
 
   // Function table.
-  int table_size = 2;
-  module.module->function_table = new std::vector<uint16_t>;
-  module.module->function_table->push_back(0);
-  module.module->function_table->push_back(1);
-
-  // Function table.
-  Handle<FixedArray> fixed = isolate->factory()->NewFixedArray(2 * table_size);
-  fixed->set(0, Smi::FromInt(1));
-  fixed->set(1, Smi::FromInt(1));
-  fixed->set(2, *module.function_code->at(0));
-  fixed->set(3, *module.function_code->at(1));
-  module.function_table = fixed;
+  int table[] = {0, 1};
+  module.AddIndirectFunctionTable(table, 2);
+  module.PopulateIndirectFunctionTable();
 
   // Builder the caller function.
   BUILD(r,
         WASM_I32_ADD(WASM_CALL_INDIRECT(1, WASM_GET_LOCAL(0), WASM_GET_LOCAL(1),
                                         WASM_GET_LOCAL(2)),
                      WASM_CALL_INDIRECT(1, WASM_GET_LOCAL(1), WASM_GET_LOCAL(2),
                                         WASM_GET_LOCAL(0))));
 
   CHECK_EQ(5, r.Call(0, 1, 2));
   CHECK_EQ(19, r.Call(0, 1, 9));
@@ skipping 342 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); }