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/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
"use strict";
class Inst {
constructor(opcode, args = [])
{
this._opcode = opcode;
this._args = args;
}
append(...args)
{
this._args.push(...args);
}
clear()
{
this._opcode = Nop;
this._args = [];
}
get opcode() { return this._opcode; }
get args() { return this._args; }
visitArg(index, func, ...args)
{
let replacement = func(this._args[index], ...args);
if (replacement)
this._args[index] = replacement;
}
forEachTmpFast(func)
{
for (let i = 0; i < this._args.length; ++i) {
let replacement;
if (replacement = this._args[i].forEachTmpFast(func))
this._args[i] = replacement;
}
}
forEachArg(func)
{
Inst_forEachArg(this, func);
}
forEachTmp(func)
{
this.forEachArg((arg, role, type, width) => {
return arg.forEachTmp(role, type, width, func);
});
}
forEach(thing, func)
{
this.forEachArg((arg, role, type, width) => {
return arg.forEach(thing, role, type, width, func);
});
}
static forEachDef(thing, prevInst, nextInst, func)
{
if (prevInst) {
prevInst.forEach(
thing,
(value, role, type, width) => {
if (Arg.isLateDef(role))
return func(value, role, type, width);
});
}
if (nextInst) {
nextInst.forEach(
thing,
(value, role, type, width) => {
if (Arg.isEarlyDef(role))
return func(value, role, type, width);
});
}
}
static forEachDefWithExtraClobberedRegs(thing, prevInst, nextInst, func)
{
forEachDef(thing, prevInst, nextInst, func);
let regDefRole;
let reportReg = reg => {
let type = reg.isGPR ? GP : FP;
func(thing.fromReg(reg), regDefRole, type, Arg.conservativeWidth(type));
};
if (prevInst && prevInst.opcode == Patch) {
regDefRole = Arg.Def;
prevInst.extraClobberedRegs.forEach(reportReg);
}
if (nextInst && nextInst.opcode == Patch) {
regDefRole = Arg.EarlyDef;
nextInst.extraEarlyClobberedRegs.forEach(reportReg);
}
}
get hasNonArgEffects() { return Inst_hasNonArgEffects(this); }
hash()
{
let result = opcodeCode(this.opcode);
for (let arg of this.args) {
result += arg.hash();
result |= 0;
}
return result >>> 0;
}
toString()
{
return "" + symbolName(this._opcode) + " " + this._args.join(", ");
}
}