69 lines
3.1 KiB
C++
69 lines
3.1 KiB
C++
/*
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* Copyright (c) 2017, Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "runtime/command_queue/local_id_gen.h"
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#include "runtime/helpers/aligned_memory.h"
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#include "runtime/utilities/cpu_info.h"
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namespace OCLRT {
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struct uint16x8_t;
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struct uint16x16_t;
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// This is the initial value of SIMD for local ID
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// computation. It correlates to the SIMD lane.
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// Must be 32byte aligned for AVX2 usage
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ALIGNAS(32)
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const uint16_t initialLocalID[] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31};
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// Lookup table for generating LocalIDs based on the SIMD of the kernel
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void (*LocalIDHelper::generateSimd8)(void *buffer, size_t lwsX, size_t lwsY, size_t threadsPerWorkGroup) = generateLocalIDsSimd<uint16x8_t, 8>;
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void (*LocalIDHelper::generateSimd16)(void *buffer, size_t lwsX, size_t lwsY, size_t threadsPerWorkGroup) = generateLocalIDsSimd<uint16x8_t, 16>;
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void (*LocalIDHelper::generateSimd32)(void *buffer, size_t lwsX, size_t lwsY, size_t threadsPerWorkGroup) = generateLocalIDsSimd<uint16x8_t, 32>;
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// Initialize the lookup table based on CPU capabilities
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LocalIDHelper::LocalIDHelper() {
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bool supportsAVX2 = CpuInfo::getInstance().isFeatureSupported(CpuInfo::featureAvX2);
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if (supportsAVX2) {
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LocalIDHelper::generateSimd8 = generateLocalIDsSimd<uint16x8_t, 8>;
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LocalIDHelper::generateSimd16 = generateLocalIDsSimd<uint16x16_t, 16>;
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LocalIDHelper::generateSimd32 = generateLocalIDsSimd<uint16x16_t, 32>;
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}
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}
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LocalIDHelper LocalIDHelper::initializer;
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//traditional function to generate local IDs
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void generateLocalIDs(void *buffer, uint32_t simd, size_t lwsX, size_t lwsY, size_t lwsZ) {
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auto threadsPerWorkGroup = getThreadsPerWG(simd, lwsX * lwsY * lwsZ);
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if (simd == 32) {
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LocalIDHelper::generateSimd32(buffer, lwsX, lwsY, threadsPerWorkGroup);
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} else if (simd == 16) {
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LocalIDHelper::generateSimd16(buffer, lwsX, lwsY, threadsPerWorkGroup);
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} else {
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LocalIDHelper::generateSimd8(buffer, lwsX, lwsY, threadsPerWorkGroup);
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}
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}
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} // namespace OCLRT
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