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/*========================== begin_copyright_notice ============================
Copyright (C) 2025 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "MaxGRFTables.h"
#include "Compiler/CISACodeGen/Platform.hpp"
using namespace std;
namespace IGC {
static constexpr MaxGRFEntry XE3_GRF[] = {
{128, SIMDMode::SIMD16, HWLocalId::EITHER, 1024}, {128, SIMDMode::SIMD32, HWLocalId::VALUE1, 1024},
{128, SIMDMode::SIMD32, HWLocalId::VALUE0, 2048}, {160, SIMDMode::SIMD16, HWLocalId::EITHER, 768},
{160, SIMDMode::SIMD32, HWLocalId::VALUE1, 1024}, {160, SIMDMode::SIMD32, HWLocalId::VALUE0, 1536},
{192, SIMDMode::SIMD16, HWLocalId::EITHER, 640}, {192, SIMDMode::SIMD32, HWLocalId::VALUE1, 1024},
{192, SIMDMode::SIMD32, HWLocalId::VALUE0, 1280}, {256, SIMDMode::SIMD16, HWLocalId::EITHER, 512},
{256, SIMDMode::SIMD32, HWLocalId::EITHER, 1024}};
bool MaxGRFTable::MatchHWLocalID(HWLocalId fromTable, HWLocalId target) {
// If target = '0', table entries with '0 or 1' and '0' are matched
// If target = '1', table entries with '0 or 1' and '1' are matched
if (fromTable == HWLocalId::EITHER || fromTable == target)
return true;
else
return false;
}
uint16_t MaxGRFTable::GetMaxGRF(SIMDMode simt, HWLocalId hwlid, uint witems) {
// Reverse order intentionally
// GRF column is accessed in descending order
for (auto &entry : llvm::reverse(table)) {
if (simt != entry.SIMT)
continue;
if (MatchHWLocalID(entry.HWLID, hwlid) && witems <= entry.Workitems) {
return entry.GRF;
}
}
return 0;
}
void MaxGRFTable::LoadTable(const CPlatform &platform) {
{
table = XE3_GRF;
}
}
} // namespace IGC
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