[wasm] Identify wasm functions with index into the function tables.

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 5e6a900ee093cb05236994d19c29bb556890f777..9524686e805187c9687bfbdbb75f813fa7ed0b59 100644
--- a/src/compiler/wasm-compiler.cc
+++ b/src/compiler/wasm-compiler.cc
@@ -4011,6 +4011,13 @@ SourcePositionTable* WasmCompilationUnit::BuildGraphForWasmFunction(
   return source_position_table;
 }
 
+char* WasmCompilationUnit::GetTaggedFunctionName(
+    const wasm::WasmFunction* function) {
+  snprintf(function_name_, sizeof(function_name_), "wasm#%d",
+           function->func_index);
+  return function_name_;
+}
+
 WasmCompilationUnit::WasmCompilationUnit(wasm::ErrorThrower* thrower,
                                          Isolate* isolate,
                                          wasm::ModuleBytesEnv* module_env,
@@ -4031,7 +4038,7 @@ WasmCompilationUnit::WasmCompilationUnit(wasm::ErrorThrower* thrower,
       compilation_zone_(isolate->allocator(), ZONE_NAME),
       info_(function->name_length != 0
                 ? module_env->wire_bytes.GetNameOrNull(function)
-                : ArrayVector("wasm"),
+                : CStrVector(GetTaggedFunctionName(function)),
             isolate, &compilation_zone_,
             Code::ComputeFlags(Code::WASM_FUNCTION)),
       job_(),