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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
//===--- CodeGenHwModes.cpp -----------------------------------------------===//
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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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// Classes to parse and store HW mode information for instruction selection
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//===----------------------------------------------------------------------===//
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#include "CodeGenHwModes.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/Record.h"
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using namespace llvm;
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StringRef CodeGenHwModes::DefaultModeName = "DefaultMode";
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HwMode::HwMode(Record *R) {
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Name = R->getName();
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Features = R->getValueAsString("Features");
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}
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LLVM_DUMP_METHOD
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void HwMode::dump() const {
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dbgs() << Name << ": " << Features << '\n';
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}
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HwModeSelect::HwModeSelect(Record *R, CodeGenHwModes &CGH) {
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std::vector<Record*> Modes = R->getValueAsListOfDefs("Modes");
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std::vector<Record*> Objects = R->getValueAsListOfDefs("Objects");
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if (Modes.size() != Objects.size()) {
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PrintError(R->getLoc(), "in record " + R->getName() +
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" derived from HwModeSelect: the lists Modes and Objects should "
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"have the same size");
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report_fatal_error("error in target description.");
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}
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for (unsigned i = 0, e = Modes.size(); i != e; ++i) {
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unsigned ModeId = CGH.getHwModeId(Modes[i]->getName());
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Items.push_back(std::make_pair(ModeId, Objects[i]));
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}
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}
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LLVM_DUMP_METHOD
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void HwModeSelect::dump() const {
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dbgs() << '{';
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for (const PairType &P : Items)
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dbgs() << " (" << P.first << ',' << P.second->getName() << ')';
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dbgs() << " }\n";
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}
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CodeGenHwModes::CodeGenHwModes(RecordKeeper &RK) : Records(RK) {
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std::vector<Record*> MRs = Records.getAllDerivedDefinitions("HwMode");
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// The default mode needs a definition in the .td sources for TableGen
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// to accept references to it. We need to ignore the definition here.
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for (auto I = MRs.begin(), E = MRs.end(); I != E; ++I) {
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if ((*I)->getName() != DefaultModeName)
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continue;
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MRs.erase(I);
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break;
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}
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for (Record *R : MRs) {
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Modes.emplace_back(R);
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unsigned NewId = Modes.size();
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ModeIds.insert(std::make_pair(Modes[NewId-1].Name, NewId));
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}
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std::vector<Record*> MSs = Records.getAllDerivedDefinitions("HwModeSelect");
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for (Record *R : MSs) {
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auto P = ModeSelects.emplace(std::make_pair(R, HwModeSelect(R, *this)));
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assert(P.second);
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(void)P;
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}
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}
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unsigned CodeGenHwModes::getHwModeId(StringRef Name) const {
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if (Name == DefaultModeName)
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return DefaultMode;
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auto F = ModeIds.find(Name);
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assert(F != ModeIds.end() && "Unknown mode name");
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return F->second;
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}
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const HwModeSelect &CodeGenHwModes::getHwModeSelect(Record *R) const {
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auto F = ModeSelects.find(R);
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assert(F != ModeSelects.end() && "Record is not a \"mode select\"");
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return F->second;
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}
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LLVM_DUMP_METHOD
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void CodeGenHwModes::dump() const {
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dbgs() << "Modes: {\n";
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for (const HwMode &M : Modes) {
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dbgs() << " ";
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M.dump();
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}
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dbgs() << "}\n";
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dbgs() << "ModeIds: {\n";
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for (const auto &P : ModeIds)
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dbgs() << " " << P.first() << " -> " << P.second << '\n';
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dbgs() << "}\n";
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dbgs() << "ModeSelects: {\n";
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for (const auto &P : ModeSelects) {
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dbgs() << " " << P.first->getName() << " -> ";
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P.second.dump();
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}
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dbgs() << "}\n";
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}
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