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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";
// This file is for misc symbols.
// B3 types
const Void = Symbol("Void");
const Int32 = Symbol("Int32");
const Int64 = Symbol("Int64");
const Float = Symbol("Float");
const Double = Symbol("Double");
// Arg type
const GP = Symbol("GP");
const FP = Symbol("FP");
// Stack slot kind
const Locked = Symbol("Locked");
const Spill = Symbol("Spill");
// Frequency class
const Normal = Symbol("Normal");
const Rare = Symbol("Rare");
// Relational conditions
const Equal = Symbol("Equal");
const NotEqual = Symbol("NotEqual");
const Above = Symbol("Above");
const AboveOrEqual = Symbol("AboveOrEqual");
const Below = Symbol("Below");
const BelowOrEqual = Symbol("BelowOrEqual");
const GreaterThan = Symbol("GreaterThan");
const GreaterThanOrEqual = Symbol("GreaterThanOrEqual");
const LessThan = Symbol("LessThan");
const LessThanOrEqual = Symbol("LessThanOrEqual");
function relCondCode(cond)
{
switch (cond) {
case Equal:
return 4;
case NotEqual:
return 5;
case Above:
return 7;
case AboveOrEqual:
return 3;
case Below:
return 2;
case BelowOrEqual:
return 6;
case GreaterThan:
return 15;
case GreaterThanOrEqual:
return 13;
case LessThan:
return 12;
case LessThanOrEqual:
return 14;
default:
throw new Error("Bad rel cond");
}
}
// Result conditions
const Overflow = Symbol("Overflow");
const Signed = Symbol("Signed");
const PositiveOrZero = Symbol("PositiveOrZero");
const Zero = Symbol("Zero");
const NonZero = Symbol("NonZero");
function resCondCode(cond)
{
switch (cond) {
case Overflow:
return 0;
case Signed:
return 8;
case PositiveOrZero:
return 9;
case Zero:
return 4;
case NonZero:
return 5;
default:
throw new Error("Bad res cond: " + cond.toString());
}
}
// Double conditions
const DoubleEqual = Symbol("DoubleEqual");
const DoubleNotEqual = Symbol("DoubleNotEqual");
const DoubleGreaterThan = Symbol("DoubleGreaterThan");
const DoubleGreaterThanOrEqual = Symbol("DoubleGreaterThanOrEqual");
const DoubleLessThan = Symbol("DoubleLessThan");
const DoubleLessThanOrEqual = Symbol("DoubleLessThanOrEqual");
const DoubleEqualOrUnordered = Symbol("DoubleEqualOrUnordered");
const DoubleNotEqualOrUnordered = Symbol("DoubleNotEqualOrUnordered");
const DoubleGreaterThanOrUnordered = Symbol("DoubleGreaterThanOrUnordered");
const DoubleGreaterThanOrEqualOrUnordered = Symbol("DoubleGreaterThanOrEqualOrUnordered");
const DoubleLessThanOrUnordered = Symbol("DoubleLessThanOrUnordered");
const DoubleLessThanOrEqualOrUnordered = Symbol("DoubleLessThanOrEqualOrUnordered");
function doubleCondCode(cond)
{
const bitInvert = 0x10;
const bitSpecial = 0x20;
switch (cond) {
case DoubleEqual:
return 4 | bitSpecial;
case DoubleNotEqual:
return 5;
case DoubleGreaterThan:
return 7;
case DoubleGreaterThanOrEqual:
return 3;
case DoubleLessThan:
return 7 | bitInvert;
case DoubleLessThanOrEqual:
return 3 | bitInvert;
case DoubleEqualOrUnordered:
return 4;
case DoubleNotEqualOrUnordered:
return 5 | bitSpecial;
case DoubleGreaterThanOrUnordered:
return 2 | bitInvert;
case DoubleGreaterThanOrEqualOrUnordered:
return 6 | bitInvert;
case DoubleLessThanOrUnordered:
return 2;
case DoubleLessThanOrEqualOrUnordered:
return 6;
default:
throw new Error("Bad cond");
}
}
// Define pointerType()
const Ptr = 64;
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