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//===- VTEmitter.cpp - Generate properties from ValueTypes.td -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include <array>
#include <cassert>
#include <map>
using namespace llvm;
namespace {
class VTEmitter {
private:
RecordKeeper &Records;
public:
VTEmitter(RecordKeeper &R) : Records(R) {}
void run(raw_ostream &OS);
};
} // End anonymous namespace.
static void VTtoGetLLVMTyString(raw_ostream &OS, const Record *VT) {
bool IsVector = VT->getValueAsBit("isVector");
if (IsVector)
OS << (VT->getValueAsBit("isScalable") ? "Scalable" : "Fixed")
<< "VectorType::get(";
auto OutputVT = IsVector ? VT->getValueAsDef("ElementType") : VT;
int64_t OutputVTSize = OutputVT->getValueAsInt("Size");
if (OutputVT->getValueAsBit("isFP")) {
StringRef FloatTy;
auto OutputVTName = OutputVT->getValueAsString("LLVMName");
switch (OutputVTSize) {
default:
llvm_unreachable("Unhandled case");
case 16:
FloatTy = (OutputVTName == "bf16") ? "BFloatTy" : "HalfTy";
break;
case 32:
FloatTy = "FloatTy";
break;
case 64:
FloatTy = "DoubleTy";
break;
case 80:
FloatTy = "X86_FP80Ty";
break;
case 128:
FloatTy = (OutputVTName == "ppcf128") ? "PPC_FP128Ty" : "FP128Ty";
break;
}
OS << "Type::get" << FloatTy << "(Context)";
} else if (OutputVT->getValueAsBit("isInteger")) {
// We only have Type::getInt1Ty, Int8, Int16, Int32, Int64, and Int128
if ((isPowerOf2_64(OutputVTSize) && OutputVTSize >= 8 &&
OutputVTSize <= 128) ||
OutputVTSize == 1)
OS << "Type::getInt" << OutputVTSize << "Ty(Context)";
else
OS << "Type::getIntNTy(Context, " << OutputVTSize << ")";
} else
llvm_unreachable("Unhandled case");
if (IsVector)
OS << ", " << VT->getValueAsInt("nElem") << ")";
}
void VTEmitter::run(raw_ostream &OS) {
emitSourceFileHeader("ValueTypes Source Fragment", OS, Records);
std::array<const Record *, 256> VTsByNumber = {};
auto ValueTypes = Records.getAllDerivedDefinitions("ValueType");
for (auto *VT : ValueTypes) {
auto Number = VT->getValueAsInt("Value");
assert(0 <= Number && Number < (int)VTsByNumber.size() &&
"ValueType should be uint8_t");
assert(!VTsByNumber[Number] && "Duplicate ValueType");
VTsByNumber[Number] = VT;
}
struct VTRange {
StringRef First;
StringRef Last;
bool Closed;
};
std::map<StringRef, VTRange> VTRanges;
auto UpdateVTRange = [&VTRanges](const char *Key, StringRef Name,
bool Valid) {
if (Valid) {
if (!VTRanges.count(Key))
VTRanges[Key].First = Name;
assert(!VTRanges[Key].Closed && "Gap detected!");
VTRanges[Key].Last = Name;
} else if (VTRanges.count(Key)) {
VTRanges[Key].Closed = true;
}
};
OS << "#ifdef GET_VT_ATTR // (Ty, n, sz, Any, Int, FP, Vec, Sc)\n";
for (const auto *VT : VTsByNumber) {
if (!VT)
continue;
auto Name = VT->getValueAsString("LLVMName");
auto Value = VT->getValueAsInt("Value");
bool IsInteger = VT->getValueAsBit("isInteger");
bool IsFP = VT->getValueAsBit("isFP");
bool IsVector = VT->getValueAsBit("isVector");
bool IsScalable = VT->getValueAsBit("isScalable");
bool IsNormalValueType = VT->getValueAsBit("isNormalValueType");
int64_t NElem = IsVector ? VT->getValueAsInt("nElem") : 0;
StringRef EltName = IsVector ? VT->getValueAsDef("ElementType")->getName()
: "INVALID_SIMPLE_VALUE_TYPE";
UpdateVTRange("INTEGER_FIXEDLEN_VECTOR_VALUETYPE", Name,
IsInteger && IsVector && !IsScalable);
UpdateVTRange("INTEGER_SCALABLE_VECTOR_VALUETYPE", Name,
IsInteger && IsScalable);
UpdateVTRange("FP_FIXEDLEN_VECTOR_VALUETYPE", Name,
IsFP && IsVector && !IsScalable);
UpdateVTRange("FP_SCALABLE_VECTOR_VALUETYPE", Name, IsFP && IsScalable);
UpdateVTRange("FIXEDLEN_VECTOR_VALUETYPE", Name, IsVector && !IsScalable);
UpdateVTRange("SCALABLE_VECTOR_VALUETYPE", Name, IsScalable);
UpdateVTRange("VECTOR_VALUETYPE", Name, IsVector);
UpdateVTRange("INTEGER_VALUETYPE", Name, IsInteger && !IsVector);
UpdateVTRange("FP_VALUETYPE", Name, IsFP && !IsVector);
UpdateVTRange("VALUETYPE", Name, IsNormalValueType);
// clang-format off
OS << " GET_VT_ATTR("
<< Name << ", "
<< Value << ", "
<< VT->getValueAsInt("Size") << ", "
<< VT->getValueAsBit("isOverloaded") << ", "
<< (IsInteger ? Name[0] == 'i' ? 3 : 1 : 0) << ", "
<< (IsFP ? Name[0] == 'f' ? 3 : 1 : 0) << ", "
<< IsVector << ", "
<< IsScalable << ", "
<< NElem << ", "
<< EltName << ")\n";
// clang-format on
}
OS << "#endif\n\n";
OS << "#ifdef GET_VT_RANGES\n";
for (const auto &KV : VTRanges) {
assert(KV.second.Closed);
OS << " FIRST_" << KV.first << " = " << KV.second.First << ",\n"
<< " LAST_" << KV.first << " = " << KV.second.Last << ",\n";
}
OS << "#endif\n\n";
OS << "#ifdef GET_VT_VECATTR // (Ty, Sc, nElem, ElTy)\n";
for (const auto *VT : VTsByNumber) {
if (!VT || !VT->getValueAsBit("isVector"))
continue;
const auto *ElTy = VT->getValueAsDef("ElementType");
assert(ElTy);
// clang-format off
OS << " GET_VT_VECATTR("
<< VT->getValueAsString("LLVMName") << ", "
<< VT->getValueAsBit("isScalable") << ", "
<< VT->getValueAsInt("nElem") << ", "
<< ElTy->getName() << ")\n";
// clang-format on
}
OS << "#endif\n\n";
OS << "#ifdef GET_VT_EVT\n";
for (const auto *VT : VTsByNumber) {
if (!VT)
continue;
bool IsInteger = VT->getValueAsBit("isInteger");
bool IsVector = VT->getValueAsBit("isVector");
bool IsFP = VT->getValueAsBit("isFP");
if (!IsInteger && !IsVector && !IsFP)
continue;
OS << " GET_VT_EVT(" << VT->getValueAsString("LLVMName") << ", ";
VTtoGetLLVMTyString(OS, VT);
OS << ")\n";
}
OS << "#endif\n\n";
}
static TableGen::Emitter::OptClass<VTEmitter> X("gen-vt", "Generate ValueType");
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