2ec2bda84b
Changes:
- Add WasmInitExpr class which knows how to create initializer
expressions as pairs of {type, value}. Also define a default for every
type. Emit such pairs to a byte array with emit_init_expr().
- Add an initializer expression to every global (addGlobal() uses the
default if the argument is absent).
- Introduce wasmI64Const();
- Update tests as needed.
Change-Id: I75ffe96604891506ad78bd3677ce1efe5e0cee07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2851892
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74231}
41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
// Copyright 2020 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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load('test/mjsunit/wasm/wasm-module-builder.js');
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const builder = new WasmModuleBuilder();
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builder.addGlobal(kWasmI32, true, WasmInitExpr.I32Const(35));
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builder.addType(makeSig([], [kWasmI32]));
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builder.addType(makeSig([kWasmI32, kWasmI32], [kWasmI32]));
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// Generate function 1 (out of 3).
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builder.addFunction(undefined, 0 /* sig */).addBody([
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// signature: i_v
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// body:
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kExprI32Const, 1, // i32.const
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]);
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// Generate function 2 (out of 3).
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builder.addFunction(undefined, 0 /* sig */).addBody([
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// signature: i_v
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// body:
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kExprI32Const, 0, // i32.const
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]);
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// Generate function 3 (out of 3).
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builder.addFunction(undefined, 1 /* sig */).addBody([
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// signature: i_ii
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// body:
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kExprBlock, kWasmI32, // block @1 i32
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kExprF64Const, 0, 0, 0, 0, 0, 0, 0, 0, // f64.const
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kExprI32SConvertF64, // i32.trunc_f64_s
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kExprCallFunction, 1, // call function #1: i_v
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kExprBrIf, 0, // br_if depth=0
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kExprGlobalGet, 0, // global.get
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kExprCallFunction, 0, // call function #0: i_v
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kExprBrIf, 0, // br_if depth=0
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kExprI32ShrS, // i32.shr_s
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kExprEnd, // end @24
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]);
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builder.addExport('f', 2);
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const instance = builder.instantiate();
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assertEquals(35, instance.exports.f(0, 0));
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