cb493d2bab
Summary: Port more instructions. AMD version is at https://gist.github.com/jhuber6/235d7ee95f747c75f9a3cfd8eedac6aa
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
//===------- Utils.cpp - OpenMP device runtime utility functions -- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//===----------------------------------------------------------------------===//
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#include "DeviceUtils.h"
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#include "Debug.h"
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#include "Interface.h"
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#include "Mapping.h"
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#include "gpuintrin.h"
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using namespace ompx;
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uint64_t utils::pack(uint32_t LowBits, uint32_t HighBits) {
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return (((uint64_t)HighBits) << 32) | (uint64_t)LowBits;
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}
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void utils::unpack(uint64_t Val, uint32_t &LowBits, uint32_t &HighBits) {
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static_assert(sizeof(unsigned long) == 8, "");
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LowBits = static_cast<uint32_t>(Val & 0x00000000FFFFFFFFUL);
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HighBits = static_cast<uint32_t>((Val & 0xFFFFFFFF00000000UL) >> 32);
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}
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int32_t utils::shuffle(uint64_t Mask, int32_t Var, int32_t SrcLane,
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int32_t Width) {
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return __gpu_shuffle_idx_u32(Mask, SrcLane, Var, Width);
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}
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int32_t utils::shuffleDown(uint64_t Mask, int32_t Var, uint32_t Delta,
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int32_t Width) {
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int32_t Self = mapping::getThreadIdInWarp();
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int32_t Index = (Delta + (Self & (Width - 1))) >= Width ? Self : Self + Delta;
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return __gpu_shuffle_idx_u64(Mask, Index, Var, Width);
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}
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int64_t utils::shuffleDown(uint64_t Mask, int64_t Var, uint32_t Delta,
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int32_t Width) {
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int32_t Self = mapping::getThreadIdInWarp();
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int32_t Index = (Delta + (Self & (Width - 1))) >= Width ? Self : Self + Delta;
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return __gpu_shuffle_idx_u64(Mask, Index, Var, Width);
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}
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uint64_t utils::ballotSync(uint64_t Mask, int32_t Pred) {
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return __gpu_ballot(Mask, Pred);
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}
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bool utils::isSharedMemPtr(void *Ptr) { return __gpu_is_ptr_local(Ptr); }
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extern "C" {
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int32_t __kmpc_shuffle_int32(int32_t Val, int16_t Delta, int16_t SrcLane) {
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return utils::shuffleDown(lanes::All, Val, Delta, SrcLane);
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}
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int64_t __kmpc_shuffle_int64(int64_t Val, int16_t Delta, int16_t Width) {
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return utils::shuffleDown(lanes::All, Val, Delta, Width);
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}
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}
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