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/*
* Copyright (C) 2022 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.
*/
#pragma once
#include <wtf/PrintStream.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
typedef union v128_u {
float f32x4[4];
double f64x2[2];
uint8_t u8x16[16];
uint16_t u16x8[8];
uint32_t u32x4[4];
uint64_t u64x2[2] = { 0, 0 };
constexpr v128_u() = default;
constexpr v128_u(uint64_t first, uint64_t second)
: u64x2 { first, second }
{ }
} v128_t;
constexpr v128_t vectorAllOnes()
{
return v128_t { UINT64_MAX, UINT64_MAX };
}
constexpr v128_t vectorAllZeros()
{
return v128_t { 0, 0 };
}
// Comparing based on bits. Not using float/double comparison.
constexpr bool bitEquals(const v128_t& lhs, const v128_t rhs)
{
return lhs.u64x2[0] == rhs.u64x2[0] && lhs.u64x2[1] == rhs.u64x2[1];
}
constexpr v128_t vectorOr(v128_t lhs, v128_t rhs)
{
return v128_t { lhs.u64x2[0] | rhs.u64x2[0], lhs.u64x2[1] | rhs.u64x2[1] };
}
constexpr v128_t vectorAnd(v128_t lhs, v128_t rhs)
{
return v128_t { lhs.u64x2[0] & rhs.u64x2[0], lhs.u64x2[1] & rhs.u64x2[1] };
}
constexpr v128_t vectorXor(v128_t lhs, v128_t rhs)
{
return v128_t { lhs.u64x2[0] ^ rhs.u64x2[0], lhs.u64x2[1] ^ rhs.u64x2[1] };
}
enum class SIMDLane : uint8_t {
v128 = 0,
i8x16,
i16x8,
i32x4,
i64x2,
f32x4,
f64x2,
};
static constexpr unsigned bitsOfSIMDLane = 6;
enum class SIMDSignMode : uint8_t {
None = 0,
Signed,
Unsigned,
};
static constexpr unsigned bitsOfSIMDSignMode = 2;
struct SIMDInfo {
SIMDLane lane : bitsOfSIMDLane { SIMDLane::v128 };
SIMDSignMode signMode : bitsOfSIMDSignMode { SIMDSignMode::None };
constexpr SIMDInfo(SIMDLane passedLane, SIMDSignMode passedSignMode)
: lane(passedLane)
, signMode(passedSignMode)
{ }
constexpr SIMDInfo() = default;
friend bool operator==(const SIMDInfo&, const SIMDInfo&) = default;
};
constexpr uint8_t elementCount(SIMDLane lane)
{
switch (lane) {
case SIMDLane::i8x16:
return 16;
case SIMDLane::i16x8:
return 8;
case SIMDLane::f32x4:
case SIMDLane::i32x4:
return 4;
case SIMDLane::f64x2:
case SIMDLane::i64x2:
return 2;
case SIMDLane::v128:
RELEASE_ASSERT_NOT_REACHED();
}
RELEASE_ASSERT_NOT_REACHED();
}
constexpr bool scalarTypeIsFloatingPoint(SIMDLane lane)
{
switch (lane) {
case SIMDLane::f32x4:
case SIMDLane::f64x2:
return true;
default:
return false;
}
}
constexpr bool scalarTypeIsIntegral(SIMDLane lane)
{
switch (lane) {
case SIMDLane::i8x16:
case SIMDLane::i16x8:
case SIMDLane::i32x4:
case SIMDLane::i64x2:
return true;
default:
return false;
}
}
constexpr SIMDLane narrowedLane(SIMDLane lane)
{
switch (lane) {
case SIMDLane::v128:
case SIMDLane::i8x16:
case SIMDLane::f32x4:
RELEASE_ASSERT_NOT_REACHED();
return lane;
case SIMDLane::i16x8:
return SIMDLane::i8x16;
case SIMDLane::i32x4:
return SIMDLane::i16x8;
case SIMDLane::i64x2:
return SIMDLane::i32x4;
case SIMDLane::f64x2:
return SIMDLane::f32x4;
}
RELEASE_ASSERT_NOT_REACHED();
}
constexpr SIMDLane promotedLane(SIMDLane lane)
{
switch (lane) {
case SIMDLane::v128:
case SIMDLane::i64x2:
case SIMDLane::f64x2:
RELEASE_ASSERT_NOT_REACHED();
return lane;
case SIMDLane::i8x16:
return SIMDLane::i16x8;
case SIMDLane::i16x8:
return SIMDLane::i32x4;
case SIMDLane::i32x4:
return SIMDLane::i64x2;
case SIMDLane::f32x4:
return SIMDLane::f64x2;
}
RELEASE_ASSERT_NOT_REACHED();
}
constexpr unsigned elementByteSize(SIMDLane simdLane)
{
switch (simdLane) {
case SIMDLane::i8x16:
return 1;
case SIMDLane::i16x8:
return 2;
case SIMDLane::i32x4:
case SIMDLane::f32x4:
return 4;
case SIMDLane::i64x2:
case SIMDLane::f64x2:
return 8;
case SIMDLane::v128:
return 16;
}
RELEASE_ASSERT_NOT_REACHED();
}
} // namespace JSC
namespace WTF {
JS_EXPORT_PRIVATE void printInternal(PrintStream& out, JSC::SIMDLane);
JS_EXPORT_PRIVATE void printInternal(PrintStream& out, JSC::SIMDSignMode);
JS_EXPORT_PRIVATE void printInternal(PrintStream& out, JSC::v128_t);
} // namespace WTF
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
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