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7298a38552
sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
63 lines
2.6 KiB
JavaScript
63 lines
2.6 KiB
JavaScript
// Copyright 2018 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: --liftoff --no-wasm-tier-up --no-future --wasm-tier-mask-for-testing=2
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load('test/mjsunit/wasm/wasm-constants.js');
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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.addMemory(1, 1);
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// First function is Liftoff. The first parameter is used as memory offset.
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builder.addFunction(undefined, kSig_v_i).addBody([
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kExprGetLocal, 0, // get_local 0
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kExprI32Const, 0, // i32.const 0
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kExprI32StoreMem, 0, 0, // i32.store offset=0
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]);
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// Second function is Turbofan. It loads the sixth parameter from the stack
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// into a register for the first argument. Even though it's a 32-bit value, it
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// is loaded as 64-bit value on x64.
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builder.addFunction(undefined, makeSig(new Array(6).fill(kWasmI32), []))
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.addBody([
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kExprGetLocal, 5, // get_local 5
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kExprCallFunction, 0 // call 0
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]);
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// The third function is Liftoff again. A value is spilled on the stack as i32,
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// then used as a call argument, passed via the stack. The full 64-bit are
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// copied on the stack, even though just 32-bit were written before. Hence, the
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// stack slot is not zero-extended.
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const gen_i32_code = [
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kExprTeeLocal, 0, // tee_local 0
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kExprGetLocal, 0, // get_local 0
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kExprI32Const, 1, // i32.const 1
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kExprI32Add // i32.add --> 2nd param
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];
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builder.addFunction(undefined, kSig_v_v).addLocals({i32_count: 1}).addBody([
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// Generate six values on the stack, then six more to force the other six on
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// the stack.
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...wasmI32Const(0), // i32.const 0
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...wasmI32Const(1), // i32.const 1
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kExprI32Add, // i32.add --> 1st param
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...gen_i32_code, // --> 2nd param
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...gen_i32_code, // --> 3rd param
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...gen_i32_code, // --> 4th param
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...gen_i32_code, // --> 5th param
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...gen_i32_code, // --> 6th param
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...gen_i32_code, // --> garbage
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...gen_i32_code, // --> garbage
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...gen_i32_code, // --> garbage
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...gen_i32_code, // --> garbage
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...gen_i32_code, // --> garbage
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...gen_i32_code, // --> garbage
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kExprDrop, // drop garbage
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kExprDrop, // drop garbage
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kExprDrop, // drop garbage
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kExprDrop, // drop garbage
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kExprDrop, // drop garbage
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kExprDrop, // drop garbage
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kExprCallFunction, 1 // call 1
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]).exportAs('three');
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const instance = builder.instantiate();
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instance.exports.three();
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