1 files changed, 126 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/wasm/compilation-hints-decoder.js b/deps/v8/test/mjsunit/wasm/compilation-hints-decoder.js
new file mode 100644
index 0000000000..dfb6e49ba1
--- /dev/null
+++ b/deps/v8/test/mjsunit/wasm/compilation-hints-decoder.js
@@ -0,0 +1,126 @@
+// 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
+
+load('test/mjsunit/wasm/wasm-module-builder.js');
+
+(function testDecodeCompilationHintsSectionNoDowngrade() {
+  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,
+                              kCompilationHintTierOptimized,
+                              kCompilationHintTierBaseline)
+         .exportFunc();
+  assertThrows(() => builder.instantiate({mod: {pow: Math.pow}}),
+               WebAssembly.CompileError,
+               "WebAssembly.Module(): Invalid compilation hint 0x2d " +
+               "(forbidden downgrade) @+70");
+})();
+
+(function testDecodeCompilationHintsSectionNoTiering() {
+  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(kCompilationHintStrategyDefault,
+                              kCompilationHintTierInterpreter,
+                              kCompilationHintTierInterpreter)
+         .exportFunc();
+  builder.addFunction('upow2', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprCallFunction, 0])
+  builder.addFunction('upow3', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprCallFunction, 0])
+  let instance = builder.instantiate({mod: {pow: Math.pow}});
+  assertEquals(27, instance.exports.upow(3))
+})();
+
+(function testDecodeCompilationHintsSectionUpgrade() {
+  let builder = new WasmModuleBuilder();
+  builder.addImport('mod', 'pow', kSig_i_ii);
+  builder.addFunction('upow2', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprCallFunction, 0])
+  builder.addFunction('upow3', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprCallFunction, 0])
+  builder.addFunction('upow', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprCallFunction, 0])
+         .giveCompilationHint(kCompilationHintStrategyEager,
+                              kCompilationHintTierBaseline,
+                              kCompilationHintTierOptimized)
+         .exportFunc();
+  let instance = builder.instantiate({mod: {pow: Math.pow}});
+  assertEquals(27, instance.exports.upow(3))
+})();
+
+(function testDecodeCompilationHintsSectionNoImport() {
+  let builder = new WasmModuleBuilder();
+  builder.addFunction('sq', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprI32Mul])
+         .giveCompilationHint(kCompilationHintStrategyEager,
+                              kCompilationHintTierDefault,
+                              kCompilationHintTierOptimized)
+         .exportFunc();
+  let instance = builder.instantiate();
+  assertEquals(9, instance.exports.sq(3))
+})();
+
+(function testDecodeCompilationHintsSectionNoExport() {
+  let builder = new WasmModuleBuilder();
+  builder.addFunction('sq', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprI32Mul])
+         .giveCompilationHint(kCompilationHintStrategyEager,
+                              kCompilationHintTierDefault,
+                              kCompilationHintTierOptimized)
+  builder.instantiate();
+})();
+
+(function testDecodeCompilationHintsSectionTopTierDefault() {
+  let builder = new WasmModuleBuilder();
+  builder.addFunction('sq', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprI32Mul])
+         .giveCompilationHint(kCompilationHintStrategyEager,
+                              kCompilationHintTierOptimized,
+                              kCompilationHintTierDefault)
+         .exportFunc();
+  let instance = builder.instantiate();
+  assertEquals(9, instance.exports.sq(3))
+})();
+
+(function testDecodeCompilationHintsInvalidStrategy() {
+  let builder = new WasmModuleBuilder();
+  builder.addFunction('sq', kSig_i_i)
+         .addBody([kExprGetLocal, 0,
+                   kExprGetLocal, 0,
+                   kExprI32Mul])
+         .giveCompilationHint(0x3,
+                              kCompilationHintTierOptimized,
+                              kCompilationHintTierDefault)
+         .exportFunc();
+  assertThrows(() => builder.instantiate(),
+               WebAssembly.CompileError,
+               "WebAssembly.Module(): Invalid compilation hint 0xf " +
+               "(unknown strategy) @+49");
+})();