From 87792715c9c82e0a6981c01ef56d9b309b4fdf5a Mon Sep 17 00:00:00 2001
From: Frederik Gossen <frgossen@google.com>
Date: Mon, 15 Apr 2019 15:03:55 +0200
Subject: [PATCH] [wasm-hints] Add Tests for Lazy Modules

Added test cases for entirely lazily compiled modules. They are treated
just like empty modules are.

Bug: v8:9003
Change-Id: Ic0fcae7de32e50a0aac271567c18159bf8154028
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1562130
Commit-Queue: Frederik Gossen <frgossen@google.com>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60846}
---
 .../wasm/compilation-hints-compiler.js        | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/test/mjsunit/wasm/compilation-hints-compiler.js b/test/mjsunit/wasm/compilation-hints-compiler.js
index ce74cc94e5..b54be5e1a3 100644
--- a/test/mjsunit/wasm/compilation-hints-compiler.js
+++ b/test/mjsunit/wasm/compilation-hints-compiler.js
@@ -71,3 +71,28 @@ load('test/mjsunit/wasm/wasm-module-builder.js');
     assertUnreachable,
     error => assertEquals("WebAssembly.compile(): call[1] expected type f32, found get_local of type i32 @+94", error.message)));
 })();
+
+(function testInstantiateStreamingEmptyModule() {
+  print(arguments.callee.name);
+  let builder = new WasmModuleBuilder();
+  builder.addImport('mod', 'pow', kSig_i_ii);
+  let bytes = builder.toBuffer();
+  assertPromiseResult(WebAssembly.instantiateStreaming(Promise.resolve(bytes), {mod: {pow: Math.pow}}));
+})();
+
+(function testInstantiateStreamingAllHintsLazy() {
+  print(arguments.callee.name);
+  let builder = new WasmModuleBuilder();
+  builder.addImport('mod', 'pow', kSig_i_ii);
+  builder.addFunction('upow', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprCallFunction, 0])
+         .giveCompilationHint(kCompilationHintStrategyLazy,
+                              kCompilationHintTierDefault,
+                              kCompilationHintTierDefault)
+         .exportFunc();
+  let bytes = builder.toBuffer();
+  assertPromiseResult(WebAssembly.instantiateStreaming(Promise.resolve(bytes), {mod: {pow: Math.pow}}).then(
+    ({module, instance}) => assertEquals(27, instance.exports.upow(3))));
+})();