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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef jit_ReciprocalMulConstants_h
#define jit_ReciprocalMulConstants_h
#include "mozilla/MathAlgorithms.h"
#include <stdint.h>
#include "vm/Int128.h"
namespace js::jit {
struct ReciprocalMulConstants {
template <typename Multiplier, typename ShiftAmount>
struct DivConstants {
Multiplier multiplier;
ShiftAmount shiftAmount;
};
using Div32Constants = DivConstants<int64_t, int32_t>;
static auto computeSignedDivisionConstants(int32_t d) {
return computeDivisionConstants(mozilla::Abs(d), 31);
}
static auto computeUnsignedDivisionConstants(uint32_t d) {
return computeDivisionConstants(d, 32);
}
using Div64Constants = DivConstants<Int128, int32_t>;
static auto computeSignedDivisionConstants(int64_t d) {
return computeDivisionConstants(mozilla::Abs(d), 63);
}
static auto computeUnsignedDivisionConstants(uint64_t d) {
return computeDivisionConstants(d, 64);
}
private:
static Div32Constants computeDivisionConstants(uint32_t d, int maxLog);
static Div64Constants computeDivisionConstants(uint64_t d, int maxLog);
};
} // namespace js::jit
#endif /* jit_ReciprocalMulConstants_h */