421fd3929d
This brings our constants back in line with the changed spec text. We already use kExprTableGet and kExprTableSet, but for locals and globals we still use the old wording. This renaming is mostly mechanical. PS1 was created using: ag -l 'kExpr(Get|Set|Tee)Local' src test | \ xargs -L1 sed -E 's/kExpr(Get|Set|Tee)Local\b/kExprLocal\1/g' -i PS2 contains manual fixes. R=mstarzinger@chromium.org Bug: v8:9810 Change-Id: I1617f1b2a100685a3bf56218e76845a9481959c5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1847354 Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#64161}
55 lines
2.3 KiB
JavaScript
55 lines
2.3 KiB
JavaScript
// Copyright 2019 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: --allow-natives-syntax --randomize-all-allocations
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// Flags: --wasm-far-jump-table --wasm-max-initial-code-space-reservation=1
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load('test/mjsunit/wasm/wasm-module-builder.js');
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// Instantiate bigger modules, until at least four separate code spaces have
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// been allocated.
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// Each function calls through many of the previous functions to execute the
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// jump table(s) sufficiently.
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let num_functions = 50;
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while (true) {
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print(`Trying ${num_functions} functions...`);
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if (num_functions > 1e6) {
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throw new Error('We should have hit four code spaces by now');
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}
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const builder = new WasmModuleBuilder();
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builder.addMemory(1, 1, false);
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builder.addFunction('f0', kSig_i_i).addBody([kExprLocalGet, 0]);
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// Generate some code per function to fill the code space.
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// Each function contains a number of loads that will not be executed
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// (inside an "if (i == 0)" block). They increase the code size a bit so we
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// do not need too many functions.
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// Each function f<n> with argument {i} then calls f<n/10> with argument
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// {i + 1} and returns whatever that function returns.
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const body_template = [
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kExprLocalGet, 0, kExprI32Eqz, kExprIf, kWasmStmt, // if (i == 0)
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kExprLocalGet, 0 // get i
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];
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for (let i = 0; i < 1000; ++i) body_template.push(kExprI32LoadMem, 0, 0);
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body_template.push(
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kExprDrop, kExprEnd, // end if
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kExprLocalGet, 0, kExprI32Const, 1, kExprI32Add, // i + 1
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kExprCallFunction // call f<?>
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);
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for (let i = 1; i < num_functions; ++i) {
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const body = body_template.slice();
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body.push(...wasmSignedLeb(Math.floor(i / 10)));
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builder.addFunction('f' + i, kSig_i_i).addBody(body);
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}
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builder.addExport('f', num_functions - 1);
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const instance = builder.instantiate();
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let expected = 17;
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for (let i = num_functions - 1; i > 0; i = Math.floor(i / 10)) ++expected;
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assertEquals(expected, instance.exports.f(17));
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const num_code_spaces = %WasmNumCodeSpaces(instance);
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print(`--> ${num_code_spaces} code spaces.`);
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if (num_code_spaces >= 4) break;
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num_functions *= 2;
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}
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