v8/test/mjsunit/wasm/compilation-hints-compiler.js

// Copyright 2019 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.

// Flags: --experimental-wasm-compilation-hints --wasm-test-streaming

load('test/mjsunit/wasm/wasm-module-builder.js');

(function testInstantiateStreamingWithLazyHint() {
  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])
  builder.addFunction('upow2', 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.upow2(3))));
})();

(function testInstantiateStreamingWithBadHint() {
  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])
  builder.addFunction('upow2', kSig_i_i)
         .addBody([kExprGetLocal, 0,
                   kExprGetLocal, 0,
                   kExprCallFunction, 0])
         .giveCompilationHint(kCompilationHintStrategyLazy,
                              kCompilationHintTierOptimized,
                              kCompilationHintTierBaseline)
         .exportFunc();
  let bytes = builder.toBuffer();
  assertPromiseResult(WebAssembly.instantiateStreaming(Promise.resolve(bytes), {mod: {pow: Math.pow}}).then(
    assertUnreachable,
    error => assertEquals("WebAssembly.compile(): Invalid compilation hint 0x2d (forbidden downgrade) @+78", error.message)));
})();

(function testInstantiateStreamingWithBadFunctionBody() {
  print(arguments.callee.name);
  let invalidFunctionCode = 0x65;
  let builder = new WasmModuleBuilder();
  builder.addImport('mod', 'pow', kSig_f_ff);
  builder.addFunction('upow', kSig_i_i)
         .addBody([kExprGetLocal, 0,
                   kExprGetLocal, 0,
                   kExprCallFunction, 0])
  builder.addFunction('upow2', 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(
    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))));
})();