[wasm] Implement official wasm text format

src/compiler/wasm-compiler.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 "src/compiler/wasm-compiler.h"
 
 #include <memory>
 
 #include "src/isolate-inl.h"
 
@@ skipping 16 matching lines @@
 #include "src/compiler/pipeline.h"
 #include "src/compiler/simd-scalar-lowering.h"
 #include "src/compiler/zone-stats.h"
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/factory.h"
 #include "src/log-inl.h"
 
 #include "src/wasm/ast-decoder.h"
+#include "src/wasm/s-expr.h"
 #include "src/wasm/wasm-module.h"
 #include "src/wasm/wasm-opcodes.h"
 
 // TODO(titzer): pull WASM_64 up to a common header.
 #if !V8_TARGET_ARCH_32_BIT || V8_TARGET_ARCH_X64
 #define WASM_64 1
 #else
 #define WASM_64 0
 #endif
 
@@ skipping 3303 matching lines @@
 
   SimdScalarLowering(graph, machine, common, jsgraph_->zone(), function_->sig)
       .LowerGraph();
 
   int index = static_cast<int>(function_->func_index);
 
   if (index >= FLAG_trace_wasm_ast_start && index < FLAG_trace_wasm_ast_end) {
     OFStream os(stdout);
     PrintAst(isolate_->allocator(), body, os, nullptr);
   }
+  if (index >= FLAG_trace_wasm_sexpr_start &&
+      index < FLAG_trace_wasm_sexpr_end) {
+    OFStream os(stdout);
+    PrintSExpr(module_env_->module, function_->func_index, os, nullptr);
+  }
   if (FLAG_trace_wasm_decode_time) {
     *decode_ms = decode_timer.Elapsed().InMillisecondsF();
   }
   return source_position_table;
 }
 
 WasmCompilationUnit::WasmCompilationUnit(wasm::ErrorThrower* thrower,
                                          Isolate* isolate,
                                          wasm::ModuleEnv* module_env,
                                          const wasm::WasmFunction* function,
@@ skipping 119 matching lines @@
                             function_->code_start_offset),
            compile_ms);
   }
 
   return code;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8