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c365a6e7b7
Fix buildbots and revert the CodeExpander commit. (See http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20190930/699857.html ) llvm-svn: 373581
101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
//===- GlobalCombinerEmitter.cpp - Generate a combiner --------------------===//
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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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/// \file Generate a combiner implementation for GlobalISel from a declarative
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/// syntax
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///
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Timer.h"
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/TableGenBackend.h"
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#include "CodeGenTarget.h"
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using namespace llvm;
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#define DEBUG_TYPE "gicombiner-emitter"
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cl::OptionCategory
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GICombinerEmitterCat("Options for -gen-global-isel-combiner");
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static cl::list<std::string>
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SelectedCombiners("combiners", cl::desc("Emit the specified combiners"),
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cl::cat(GICombinerEmitterCat), cl::CommaSeparated);
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namespace {
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class GICombinerEmitter {
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StringRef Name;
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Record *Combiner;
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public:
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explicit GICombinerEmitter(RecordKeeper &RK, StringRef Name,
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Record *Combiner);
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~GICombinerEmitter() {}
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StringRef getClassName() const {
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return Combiner->getValueAsString("Classname");
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}
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void run(raw_ostream &OS);
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};
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GICombinerEmitter::GICombinerEmitter(RecordKeeper &RK, StringRef Name,
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Record *Combiner)
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: Name(Name), Combiner(Combiner) {}
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void GICombinerEmitter::run(raw_ostream &OS) {
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NamedRegionTimer T("Emit", "Time spent emitting the combiner",
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"Code Generation", "Time spent generating code",
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TimeRegions);
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OS << "#ifdef " << Name.upper() << "_GENCOMBINERHELPER_DEPS\n"
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<< "#endif // ifdef " << Name.upper() << "_GENCOMBINERHELPER_DEPS\n\n";
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OS << "#ifdef " << Name.upper() << "_GENCOMBINERHELPER_H\n"
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<< "class " << getClassName() << " {\n"
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<< "public:\n"
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<< " bool tryCombineAll(\n"
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<< " GISelChangeObserver &Observer,\n"
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<< " MachineInstr &MI,\n"
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<< " MachineIRBuilder &B) const;\n"
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<< "};\n";
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OS << "#endif // ifdef " << Name.upper() << "_GENCOMBINERHELPER_H\n\n";
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OS << "#ifdef " << Name.upper() << "_GENCOMBINERHELPER_CPP\n"
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<< "\n"
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<< "bool " << getClassName() << "::tryCombineAll(\n"
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<< " GISelChangeObserver &Observer,\n"
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<< " MachineInstr &MI,\n"
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<< " MachineIRBuilder &B) const {\n"
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<< " MachineBasicBlock *MBB = MI.getParent();\n"
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<< " MachineFunction *MF = MBB->getParent();\n"
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<< " MachineRegisterInfo &MRI = MF->getRegInfo();\n"
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<< " (void)MBB; (void)MF; (void)MRI;\n\n";
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OS << "\n return false;\n"
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<< "}\n"
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<< "#endif // ifdef " << Name.upper() << "_GENCOMBINERHELPER_CPP\n";
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}
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} // end anonymous namespace
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//===----------------------------------------------------------------------===//
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namespace llvm {
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void EmitGICombiner(RecordKeeper &RK, raw_ostream &OS) {
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CodeGenTarget Target(RK);
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emitSourceFileHeader("Global Combiner", OS);
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if (SelectedCombiners.empty())
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PrintFatalError("No combiners selected with -combiners");
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for (const auto &Combiner : SelectedCombiners) {
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Record *CombinerDef = RK.getDef(Combiner);
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if (!CombinerDef)
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PrintFatalError("Could not find " + Combiner);
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GICombinerEmitter(RK, Combiner, CombinerDef).run(OS);
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}
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}
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} // namespace llvm
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