[inspector] Check that wasm wrappers appear in profiles

This extends the existing wasm profiling test to also check that
wasm-to-js and js-to-wasm wrappers appear in the profiles as expected.
It thus serves as a regression test for the status quo.

R=bmeurer@chromium.org

Bug: chromium:1054386
Change-Id: I5d4d8e6a252c6eb266b910621fca43a6ff0837bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066970Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66401}

test/inspector/cpu-profiler/console-profile-wasm-expected.txt

 Test that console profiles contain wasm function names.
 Compiling wasm.
 Running fib with increasing input until it shows up in the profile.
-Found fib in profile.
+Found expected functions in profile.

test/inspector/cpu-profiler/console-profile-wasm.js

@@ -7,8 +7,10 @@ let {session, contextGroup, Protocol} = InspectorTest.start(
 
 utils.load('test/mjsunit/wasm/wasm-module-builder.js');
 
-// Add fibonacci function.
+// Add fibonacci function, calling back and forth between JS and Wasm to also
+// check for the occurrence of the wrappers.
 var builder = new WasmModuleBuilder();
+const imp_index = builder.addImport('q', 'f', kSig_i_i);
 builder.addFunction('fib', kSig_i_i)
     .addBody([
       kExprLocalGet, 0,
@@ -17,9 +19,9 @@ builder.addFunction('fib', kSig_i_i)
       kExprI32LeS,  // i < 2 ?
       kExprBrIf, 0, // --> return i
       kExprI32Const, 1, kExprI32Sub,  // i - 1
-      kExprCallFunction, 0, // fib(i - 1)
+      kExprCallFunction, imp_index, // imp(i - 1)
       kExprLocalGet, 0, kExprI32Const, 2, kExprI32Sub,  // i - 2
-      kExprCallFunction, 0, // fib(i - 2)
+      kExprCallFunction, imp_index, // imp(i - 2)
       kExprI32Add
     ])
     .exportFunc();
@@ -32,28 +34,38 @@ function compile(bytes) {
     view[i] = bytes[i] | 0;
   }
   let module = new WebAssembly.Module(buffer);
-  let instance = new WebAssembly.Instance(module);
+  let fib = undefined;
+  function imp(i) { return fib(i); }
+  let instance = new WebAssembly.Instance(module, {q: {f: imp}});
+  fib = instance.exports.fib;
   return instance;
 }
 
-function checkError(message)
-{
-  if (message.error) {
-    InspectorTest.log("Error: ");
-    InspectorTest.logMessage(message);
-    InspectorTest.completeTest();
-  }
+function checkError(message) {
+  if (!message.error) return;
+  InspectorTest.log('Error: ');
+  InspectorTest.logMessage(message);
+  InspectorTest.completeTest();
 }
 
 (async function test() {
   Protocol.Profiler.enable();
   checkError(await Protocol.Profiler.start());
-  let found_fib_in_profile = false;
+  let found_good_profile = false;
   let finished_profiles = 0;
   Protocol.Profiler.onConsoleProfileFinished(e => {
     ++finished_profiles;
-    if (e.params.profile.nodes.some(n => n.callFrame.functionName === 'fib'))
-      found_fib_in_profile = true;
+    let function_names =
+        e.params.profile.nodes.map(n => n.callFrame.functionName);
+    // InspectorTest.log(function_names.join(', '));
+    // Check for at least one full cycle of
+    // fib -> wasm-to-js -> imp -> js-to-wasm -> fib.
+    const expected = ['fib', 'wasm-to-js:i:i', 'imp', 'js-to-wasm:i:i', 'fib'];
+    for (let i = 0; i <= function_names.length - expected.length; ++i) {
+      if (expected.every((val, idx) => val == function_names[i + idx])) {
+        found_good_profile = true;
+      }
+    }
   });
   InspectorTest.log('Compiling wasm.');
   checkError(await Protocol.Runtime.evaluate({
@@ -62,7 +74,7 @@ function checkError(message)
   }));
   InspectorTest.log(
       'Running fib with increasing input until it shows up in the profile.');
-  for (let i = 1; !found_fib_in_profile; ++i) {
+  for (let i = 1; !found_good_profile; ++i) {
     checkError(await Protocol.Runtime.evaluate(
         {expression: 'console.profile(\'profile\');'}));
     checkError(await Protocol.Runtime.evaluate(
@@ -75,6 +87,6 @@ function checkError(message)
           finished_profiles + ')');
     }
   }
-  InspectorTest.log('Found fib in profile.');
+  InspectorTest.log('Found expected functions in profile.');
   InspectorTest.completeTest();
 })().catch(e => InspectorTest.log('caught: ' + e));