[wasm] Implement official wasm text format

src/compiler/wasm-compiler.cc

Index: src/compiler/wasm-compiler.cc
diff --git a/src/compiler/wasm-compiler.cc b/src/compiler/wasm-compiler.cc
index eaa5b6fec6e2202b476c299589bb5a6863e24c94..07ed3712981f301fb0aa35e70e841b4b36403b56 100644
--- a/src/compiler/wasm-compiler.cc
+++ b/src/compiler/wasm-compiler.cc
@@ -34,6 +34,7 @@
 #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"
 
@@ -3357,6 +3358,11 @@ SourcePositionTable* WasmCompilationUnit::BuildGraphForWasmFunction(
     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();
   }