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| //===--- InfoByHwMode.cpp -------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// Classes that implement data parameterized by HW modes for instruction
// selection. Currently it is ValueTypeByHwMode (parameterized ValueType),
// and RegSizeInfoByHwMode (parameterized register/spill size and alignment
// data).
//===----------------------------------------------------------------------===//
#include "CodeGenTarget.h"
#include "InfoByHwMode.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include <set>
#include <string>
using namespace llvm;
std::string llvm::getModeName(unsigned Mode) {
if (Mode == DefaultMode)
return "*";
return (Twine('m') + Twine(Mode)).str();
}
ValueTypeByHwMode::ValueTypeByHwMode(Record *R, const CodeGenHwModes &CGH) {
const HwModeSelect &MS = CGH.getHwModeSelect(R);
for (const HwModeSelect::PairType &P : MS.Items) {
auto I = Map.insert({P.first, MVT(llvm::getValueType(P.second))});
assert(I.second && "Duplicate entry?");
(void)I;
}
}
ValueTypeByHwMode::ValueTypeByHwMode(Record *R, MVT T) : ValueTypeByHwMode(T) {
if (R->isSubClassOf("PtrValueType"))
PtrAddrSpace = R->getValueAsInt("AddrSpace");
}
bool ValueTypeByHwMode::operator== (const ValueTypeByHwMode &T) const {
assert(isValid() && T.isValid() && "Invalid type in assignment");
bool Simple = isSimple();
if (Simple != T.isSimple())
return false;
if (Simple)
return getSimple() == T.getSimple();
return Map == T.Map;
}
bool ValueTypeByHwMode::operator< (const ValueTypeByHwMode &T) const {
assert(isValid() && T.isValid() && "Invalid type in comparison");
// Default order for maps.
return Map < T.Map;
}
MVT &ValueTypeByHwMode::getOrCreateTypeForMode(unsigned Mode, MVT Type) {
auto F = Map.find(Mode);
if (F != Map.end())
return F->second;
// If Mode is not in the map, look up the default mode. If it exists,
// make a copy of it for Mode and return it.
auto D = Map.find(DefaultMode);
if (D != Map.end())
return Map.insert(std::make_pair(Mode, D->second)).first->second;
// If default mode is not present either, use provided Type.
return Map.insert(std::make_pair(Mode, Type)).first->second;
}
StringRef ValueTypeByHwMode::getMVTName(MVT T) {
StringRef N = llvm::getEnumName(T.SimpleTy);
N.consume_front("MVT::");
return N;
}
void ValueTypeByHwMode::writeToStream(raw_ostream &OS) const {
if (isSimple()) {
OS << getMVTName(getSimple());
return;
}
std::vector<const PairType*> Pairs;
for (const auto &P : Map)
Pairs.push_back(&P);
llvm::sort(Pairs, deref<std::less<PairType>>());
OS << '{';
for (unsigned i = 0, e = Pairs.size(); i != e; ++i) {
const PairType *P = Pairs[i];
OS << '(' << getModeName(P->first)
<< ':' << getMVTName(P->second).str() << ')';
if (i != e-1)
OS << ',';
}
OS << '}';
}
LLVM_DUMP_METHOD
void ValueTypeByHwMode::dump() const {
dbgs() << *this << '\n';
}
ValueTypeByHwMode llvm::getValueTypeByHwMode(Record *Rec,
const CodeGenHwModes &CGH) {
#ifndef NDEBUG
if (!Rec->isSubClassOf("ValueType"))
Rec->dump();
#endif
assert(Rec->isSubClassOf("ValueType") &&
"Record must be derived from ValueType");
if (Rec->isSubClassOf("HwModeSelect"))
return ValueTypeByHwMode(Rec, CGH);
return ValueTypeByHwMode(Rec, llvm::getValueType(Rec));
}
RegSizeInfo::RegSizeInfo(Record *R, const CodeGenHwModes &CGH) {
RegSize = R->getValueAsInt("RegSize");
SpillSize = R->getValueAsInt("SpillSize");
SpillAlignment = R->getValueAsInt("SpillAlignment");
}
bool RegSizeInfo::operator< (const RegSizeInfo &I) const {
return std::tie(RegSize, SpillSize, SpillAlignment) <
std::tie(I.RegSize, I.SpillSize, I.SpillAlignment);
}
bool RegSizeInfo::isSubClassOf(const RegSizeInfo &I) const {
return RegSize <= I.RegSize &&
SpillAlignment && I.SpillAlignment % SpillAlignment == 0 &&
SpillSize <= I.SpillSize;
}
void RegSizeInfo::writeToStream(raw_ostream &OS) const {
OS << "[R=" << RegSize << ",S=" << SpillSize
<< ",A=" << SpillAlignment << ']';
}
RegSizeInfoByHwMode::RegSizeInfoByHwMode(Record *R,
const CodeGenHwModes &CGH) {
const HwModeSelect &MS = CGH.getHwModeSelect(R);
for (const HwModeSelect::PairType &P : MS.Items) {
auto I = Map.insert({P.first, RegSizeInfo(P.second, CGH)});
assert(I.second && "Duplicate entry?");
(void)I;
}
}
bool RegSizeInfoByHwMode::operator< (const RegSizeInfoByHwMode &I) const {
unsigned M0 = Map.begin()->first;
return get(M0) < I.get(M0);
}
bool RegSizeInfoByHwMode::operator== (const RegSizeInfoByHwMode &I) const {
unsigned M0 = Map.begin()->first;
return get(M0) == I.get(M0);
}
bool RegSizeInfoByHwMode::isSubClassOf(const RegSizeInfoByHwMode &I) const {
unsigned M0 = Map.begin()->first;
return get(M0).isSubClassOf(I.get(M0));
}
bool RegSizeInfoByHwMode::hasStricterSpillThan(const RegSizeInfoByHwMode &I)
const {
unsigned M0 = Map.begin()->first;
const RegSizeInfo &A0 = get(M0);
const RegSizeInfo &B0 = I.get(M0);
return std::tie(A0.SpillSize, A0.SpillAlignment) >
std::tie(B0.SpillSize, B0.SpillAlignment);
}
void RegSizeInfoByHwMode::writeToStream(raw_ostream &OS) const {
typedef typename decltype(Map)::value_type PairType;
std::vector<const PairType*> Pairs;
for (const auto &P : Map)
Pairs.push_back(&P);
llvm::sort(Pairs, deref<std::less<PairType>>());
OS << '{';
for (unsigned i = 0, e = Pairs.size(); i != e; ++i) {
const PairType *P = Pairs[i];
OS << '(' << getModeName(P->first) << ':' << P->second << ')';
if (i != e-1)
OS << ',';
}
OS << '}';
}
EncodingInfoByHwMode::EncodingInfoByHwMode(Record *R, const CodeGenHwModes &CGH) {
const HwModeSelect &MS = CGH.getHwModeSelect(R);
for (const HwModeSelect::PairType &P : MS.Items) {
assert(P.second && P.second->isSubClassOf("InstructionEncoding") &&
"Encoding must subclass InstructionEncoding");
auto I = Map.insert({P.first, P.second});
assert(I.second && "Duplicate entry?");
(void)I;
}
}
namespace llvm {
raw_ostream &operator<<(raw_ostream &OS, const ValueTypeByHwMode &T) {
T.writeToStream(OS);
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const RegSizeInfo &T) {
T.writeToStream(OS);
return OS;
}
raw_ostream &operator<<(raw_ostream &OS, const RegSizeInfoByHwMode &T) {
T.writeToStream(OS);
return OS;
}
}
|