a51056f5c4
This is a more canonical type name, and is in line with {kVoidCode}.
Change-Id: Iaae9524b6fb6ecaafd63ce81cf30e3d01ca3e525
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2775565
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73557}
59 lines
2.4 KiB
JavaScript
59 lines
2.4 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-max-initial-code-space-reservation=1
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// Disable tier-up, to reduce execution time of this test (Liftoff generates
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// much bigger code, thus reaches the four code spaces much faster).
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// Flags: --no-wasm-tier-up
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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, kWasmVoid, // 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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