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9d7cd9b864
PR-URL: https://github.com/nodejs/node/pull/54077 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
62 lines
2.2 KiB
JavaScript
62 lines
2.2 KiB
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --wasm-deopt --allow-natives-syntax --turboshaft-wasm
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// Flags: --experimental-wasm-inlining --liftoff
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// Flags: --turboshaft-wasm-instruction-selection-staged --no-jit-fuzzing
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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// Minimal test case for a wasm deopt.
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// The following flags can help:
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// --trace-deopt-verbose (information about the deopt input and output frames)
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// --print-wasm-code (prints some information about the generated deopt data)
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// --nodebug-code (keeps the generated code small)
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// --code-comments (helpful comments in generated code if enabled in gn args)
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(function TestDeoptMinimalCallRef() {
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var builder = new WasmModuleBuilder();
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let funcRefT = builder.addType(kSig_i_ii);
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builder.addFunction("add", funcRefT)
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.addBody([kExprLocalGet, 0, kExprLocalGet, 1, kExprI32Add])
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.exportFunc();
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builder.addFunction("mul", funcRefT)
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.addBody([kExprLocalGet, 0, kExprLocalGet, 1, kExprI32Mul])
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.exportFunc();
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let mainSig =
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makeSig([kWasmI32, wasmRefType(funcRefT)], [kWasmI32]);
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builder.addFunction("main", mainSig)
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.addBody([
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kExprI32Const, 12,
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kExprLocalGet, 0,
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kExprLocalGet, 1,
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kExprCallRef, funcRefT,
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]).exportFunc();
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let wasm = builder.instantiate().exports;
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assertEquals(42, wasm.main(30, wasm.add));
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%WasmTierUpFunction(wasm.main);
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// tierup.
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assertEquals(42, wasm.main(30, wasm.add));
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if (%IsolateCountForTesting() == 1) {
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assertTrue(%IsTurboFanFunction(wasm.main));
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}
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// Non-deopt call succeeded, now causing deopt.
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assertEquals(360, wasm.main(30, wasm.mul));
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if (%IsolateCountForTesting() == 1) {
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assertFalse(%IsTurboFanFunction(wasm.main));
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}
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// Deopt happened, executions are now in liftoff.
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assertEquals(42, wasm.main(30, wasm.add));
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// Re-opt.
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%WasmTierUpFunction(wasm.main);
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// There is feedback for both targets, they do not trigger new deopts.
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assertEquals(360, wasm.main(30, wasm.mul));
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assertEquals(42, wasm.main(30, wasm.add));
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if (%IsolateCountForTesting() == 1) {
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assertTrue(%IsTurboFanFunction(wasm.main));
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}
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})();
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