48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
|
// Copyright 2021 the V8 project authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
// Flags: --experimental-wasm-simd
|
||
|
|
|
||
|
|
// This exercises an bug in scalar-lowering for load transforms. In
|
||
|
|
// particular, if the index input to v128.load32_splat was a extract_lane, the
|
||
|
|
// input wasn't correctly lowered. This caused the extract_lane node to stick
|
||
|
|
// around until code-generator, where we hit a mismatch in the register types.
|
||
|
|
load('test/mjsunit/wasm/wasm-module-builder.js');
|
||
|
|
(function() {
|
||
|
|
const builder = new WasmModuleBuilder();
|
||
|
|
builder.addMemory(1, 1);
|
||
|
|
builder.addFunction(undefined, kSig_i_ii)
|
||
|
|
.addBodyWithEnd([
|
||
|
|
kExprI32Const, 0,
|
||
|
|
kExprLocalGet, 0,
|
||
|
|
kExprI32StoreMem, 0, 0,
|
||
|
|
|
||
|
|
kExprI32Const, 4,
|
||
|
|
kExprLocalGet, 0,
|
||
|
|
kExprI32StoreMem, 0, 0,
|
||
|
|
|
||
|
|
kExprI32Const, 8,
|
||
|
|
kExprLocalGet, 0,
|
||
|
|
kExprI32StoreMem, 0, 0,
|
||
|
|
|
||
|
|
kExprI32Const, 12,
|
||
|
|
kExprLocalGet, 0,
|
||
|
|
kExprI32StoreMem, 0, 0,
|
||
|
|
// Memory now looks like (in bytes):
|
||
|
|
// [4, 0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 0]
|
||
|
|
|
||
|
|
kExprI32Const, 0,
|
||
|
|
kSimdPrefix, kExprS128LoadMem, 0, 0,
|
||
|
|
|
||
|
|
kSimdPrefix, kExprI32x4ExtractLane, 0,
|
||
|
|
// load 32-bit from byte 4, then splat to all lanes.
|
||
|
|
kSimdPrefix, kExprS128Load32Splat, 0, 0,
|
||
|
|
kSimdPrefix, kExprI32x4ExtractLane, 3,
|
||
|
|
kExprEnd,
|
||
|
|
])
|
||
|
|
.exportAs('main');
|
||
|
|
const instance = builder.instantiate();
|
||
|
|
assertEquals(4, instance.exports.main(4));
|
||
|
|
})();
|