17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
64 lines
1.9 KiB
JavaScript
64 lines
1.9 KiB
JavaScript
// Copyright 2023 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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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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var builder = new WasmModuleBuilder();
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let callee = builder.addFunction('callee', kSig_i_v).addBody([
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kExprI32Const, 1,
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]);
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let kLastLocalIndex = 600;
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let kNumLocals = kLastLocalIndex + 1;
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let kDelta = 10;
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let kExpectedResult = kLastLocalIndex + kDelta;
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function MakeBody(variant) {
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let body = [];
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// Initialize all locals with constants.
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for (let i = 0; i <= kLastLocalIndex; i++) {
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body.push(...wasmI32Const(i), kExprLocalSet, ...wasmUnsignedLeb(i));
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}
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// Last local += kDelta (causes it to be held in a register).
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body.push(
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kExprLocalGet, ...wasmUnsignedLeb(kLastLocalIndex),
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kExprI32Const, kDelta,
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kExprI32Add,
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kExprLocalSet, ...wasmUnsignedLeb(kLastLocalIndex));
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// If (false) { call callee; }
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body.push(
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kExprLocalGet, ...wasmUnsignedLeb(kLastLocalIndex),
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...wasmI32Const(kLastLocalIndex + 2 * kDelta),
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kExprI32GtU,
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kExprIf, kWasmVoid,
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kExprCallFunction, callee.index);
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if (variant == 0) {
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body.push(kExprDrop);
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} else if (variant == 1) {
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// Early control flow edges to the {end} take a different code path.
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body.push(kExprBrIf, 0);
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}
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body.push(kExprEnd);
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body.push(kExprLocalGet, ...wasmUnsignedLeb(kLastLocalIndex));
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return body;
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}
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builder.addFunction('test1', kSig_i_v)
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.exportFunc()
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.addLocals(kWasmI32, kNumLocals)
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.addBody(MakeBody(0));
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builder.addFunction('test2', kSig_i_v)
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.exportFunc()
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.addLocals(kWasmI32, kNumLocals)
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.addBody(MakeBody(1));
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let instance = builder.instantiate();
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assertEquals(kExpectedResult, instance.exports.test1());
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assertEquals(kExpectedResult, instance.exports.test2());
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