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llvm-project/polly/lib/Exchange/JSONExporter.cpp

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//===-- JSONExporter.cpp - Export Scops as JSON -------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Export the Scops build by ScopInfo pass as a JSON file.
//
//===----------------------------------------------------------------------===//
#include "polly/JSONExporter.h"
#include "polly/DependenceInfo.h"
#include "polly/LinkAllPasses.h"
#include "polly/Options.h"
#include "polly/ScopInfo.h"
#include "polly/ScopPass.h"
#include "polly/Support/ISLTools.h"
#include "polly/Support/ScopLocation.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/JSON.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"
#include "isl/map.h"
#include "isl/set.h"
#include <memory>
#include <string>
#include <system_error>
using namespace llvm;
using namespace polly;
#define DEBUG_TYPE "polly-import-jscop"
STATISTIC(NewAccessMapFound, "Number of updated access functions");
namespace {
static cl::opt<std::string>
ImportDir("polly-import-jscop-dir",
cl::desc("The directory to import the .jscop files from."),
cl::Hidden, cl::value_desc("Directory path"), cl::ValueRequired,
cl::init("."), cl::cat(PollyCategory));
static cl::opt<std::string>
ImportPostfix("polly-import-jscop-postfix",
cl::desc("Postfix to append to the import .jsop files."),
cl::Hidden, cl::value_desc("File postfix"), cl::ValueRequired,
cl::init(""), cl::cat(PollyCategory));
class JSONExporter : public ScopPass {
public:
static char ID;
explicit JSONExporter() : ScopPass(ID) {}
/// Export the SCoP @p S to a JSON file.
bool runOnScop(Scop &S) override;
/// Print the SCoP @p S as it is exported.
void printScop(raw_ostream &OS, Scop &S) const override;
/// Register all analyses and transformation required.
void getAnalysisUsage(AnalysisUsage &AU) const override;
};
class JSONImporter : public ScopPass {
public:
static char ID;
std::vector<std::string> NewAccessStrings;
explicit JSONImporter() : ScopPass(ID) {}
/// Import new access functions for SCoP @p S from a JSON file.
bool runOnScop(Scop &S) override;
/// Print the SCoP @p S and the imported access functions.
void printScop(raw_ostream &OS, Scop &S) const override;
/// Register all analyses and transformation required.
void getAnalysisUsage(AnalysisUsage &AU) const override;
};
} // namespace
static std::string getFileName(Scop &S, StringRef Suffix = "") {
std::string FunctionName = S.getFunction().getName().str();
std::string FileName = FunctionName + "___" + S.getNameStr() + ".jscop";
if (Suffix != "")
FileName += "." + Suffix.str();
return FileName;
}
/// Export all arrays from the Scop.
///
/// @param S The Scop containing the arrays.
///
/// @returns Json::Value containing the arrays.
static json::Array exportArrays(const Scop &S) {
json::Array Arrays;
std::string Buffer;
llvm::raw_string_ostream RawStringOstream(Buffer);
for (auto &SAI : S.arrays()) {
if (!SAI->isArrayKind())
continue;
json::Object Array;
json::Array Sizes;
Array["name"] = SAI->getName();
unsigned i = 0;
if (!SAI->getDimensionSize(i)) {
Sizes.push_back("*");
i++;
}
for (; i < SAI->getNumberOfDimensions(); i++) {
SAI->getDimensionSize(i)->print(RawStringOstream);
Sizes.push_back(RawStringOstream.str());
Buffer.clear();
}
Array["sizes"] = std::move(Sizes);
SAI->getElementType()->print(RawStringOstream);
Array["type"] = RawStringOstream.str();
Buffer.clear();
Arrays.push_back(std::move(Array));
}
return Arrays;
}
static json::Value getJSON(Scop &S) {
json::Object root;
unsigned LineBegin, LineEnd;
std::string FileName;
getDebugLocation(&S.getRegion(), LineBegin, LineEnd, FileName);
std::string Location;
if (LineBegin != (unsigned)-1)
Location = FileName + ":" + std::to_string(LineBegin) + "-" +
std::to_string(LineEnd);
root["name"] = S.getNameStr();
root["context"] = S.getContextStr();
if (LineBegin != (unsigned)-1)
root["location"] = Location;
root["arrays"] = exportArrays(S);
root["statements"];
json::Array Statements;
for (ScopStmt &Stmt : S) {
json::Object statement;
statement["name"] = Stmt.getBaseName();
statement["domain"] = Stmt.getDomainStr();
statement["schedule"] = Stmt.getScheduleStr();
json::Array Accesses;
for (MemoryAccess *MA : Stmt) {
json::Object access;
access["kind"] = MA->isRead() ? "read" : "write";
access["relation"] = MA->getAccessRelationStr();
Accesses.push_back(std::move(access));
}
statement["accesses"] = std::move(Accesses);
Statements.push_back(std::move(statement));
}
root["statements"] = std::move(Statements);
return json::Value(std::move(root));
}
static void exportScop(Scop &S) {
std::string FileName = ImportDir + "/" + getFileName(S);
json::Value jscop = getJSON(S);
// Write to file.
std::error_code EC;
ToolOutputFile F(FileName, EC, llvm::sys::fs::OF_TextWithCRLF);
std::string FunctionName = S.getFunction().getName().str();
errs() << "Writing JScop '" << S.getNameStr() << "' in function '"
<< FunctionName << "' to '" << FileName << "'.\n";
if (!EC) {
F.os() << formatv("{0:3}", jscop);
F.os().close();
if (!F.os().has_error()) {
errs() << "\n";
F.keep();
return;
}
}
errs() << " error opening file for writing!\n";
F.os().clear_error();
}
typedef Dependences::StatementToIslMapTy StatementToIslMapTy;
/// Import a new context from JScop.
///
/// @param S The scop to update.
/// @param JScop The JScop file describing the new schedule.
///
/// @returns True if the import succeeded, otherwise False.
static bool importContext(Scop &S, const json::Object &JScop) {
isl::set OldContext = S.getContext();
// Check if key 'context' is present.
if (!JScop.get("context")) {
errs() << "JScop file has no key named 'context'.\n";
return false;
}
isl::set NewContext =
isl::set{S.getIslCtx().get(), JScop.getString("context").value().str()};
// Check whether the context was parsed successfully.
if (NewContext.is_null()) {
errs() << "The context was not parsed successfully by ISL.\n";
return false;
}
// Check if the isl_set is a parameter set.
if (!NewContext.is_params()) {
errs() << "The isl_set is not a parameter set.\n";
return false;
}
unsigned OldContextDim = unsignedFromIslSize(OldContext.dim(isl::dim::param));
unsigned NewContextDim = unsignedFromIslSize(NewContext.dim(isl::dim::param));
// Check if the imported context has the right number of parameters.
if (OldContextDim != NewContextDim) {
errs() << "Imported context has the wrong number of parameters : "
<< "Found " << NewContextDim << " Expected " << OldContextDim
<< "\n";
return false;
}
for (unsigned i = 0; i < OldContextDim; i++) {
isl::id Id = OldContext.get_dim_id(isl::dim::param, i);
NewContext = NewContext.set_dim_id(isl::dim::param, i, Id);
}
S.setContext(NewContext);
return true;
}
/// Import a new schedule from JScop.
///
/// ... and verify that the new schedule does preserve existing data
/// dependences.
///
/// @param S The scop to update.
/// @param JScop The JScop file describing the new schedule.
/// @param D The data dependences of the @p S.
///
/// @returns True if the import succeeded, otherwise False.
static bool importSchedule(Scop &S, const json::Object &JScop,
const Dependences &D) {
StatementToIslMapTy NewSchedule;
// Check if key 'statements' is present.
if (!JScop.get("statements")) {
errs() << "JScop file has no key name 'statements'.\n";
return false;
}
const json::Array &statements = *JScop.getArray("statements");
// Check whether the number of indices equals the number of statements
if (statements.size() != S.getSize()) {
errs() << "The number of indices and the number of statements differ.\n";
return false;
}
int Index = 0;
for (ScopStmt &Stmt : S) {
// Check if key 'schedule' is present.
if (!statements[Index].getAsObject()->get("schedule")) {
errs() << "Statement " << Index << " has no 'schedule' key.\n";
return false;
}
Optional<StringRef> Schedule =
statements[Index].getAsObject()->getString("schedule");
assert(Schedule.has_value() &&
"Schedules that contain extension nodes require special handling.");
isl_map *Map = isl_map_read_from_str(S.getIslCtx().get(),
Schedule.value().str().c_str());
// Check whether the schedule was parsed successfully
if (!Map) {
errs() << "The schedule was not parsed successfully (index = " << Index
<< ").\n";
return false;
}
isl_space *Space = Stmt.getDomainSpace().release();
// Copy the old tuple id. This is necessary to retain the user pointer,
// that stores the reference to the ScopStmt this schedule belongs to.
Map = isl_map_set_tuple_id(Map, isl_dim_in,
isl_space_get_tuple_id(Space, isl_dim_set));
for (isl_size i = 0; i < isl_space_dim(Space, isl_dim_param); i++) {
isl_id *Id = isl_space_get_dim_id(Space, isl_dim_param, i);
Map = isl_map_set_dim_id(Map, isl_dim_param, i, Id);
}
isl_space_free(Space);
NewSchedule[&Stmt] = isl::manage(Map);
Index++;
}
// Check whether the new schedule is valid or not.
if (!D.isValidSchedule(S, NewSchedule)) {
errs() << "JScop file contains a schedule that changes the "
<< "dependences. Use -disable-polly-legality to continue anyways\n";
return false;
}
auto ScheduleMap = isl::union_map::empty(S.getIslCtx());
for (ScopStmt &Stmt : S) {
if (NewSchedule.find(&Stmt) != NewSchedule.end())
ScheduleMap = ScheduleMap.unite(NewSchedule[&Stmt]);
else
ScheduleMap = ScheduleMap.unite(Stmt.getSchedule());
}
S.setSchedule(ScheduleMap);
return true;
}
/// Import new memory accesses from JScop.
///
/// @param S The scop to update.
/// @param JScop The JScop file describing the new schedule.
/// @param DL The data layout to assume.
/// @param NewAccessStrings optionally record the imported access strings
///
/// @returns True if the import succeeded, otherwise False.
static bool
importAccesses(Scop &S, const json::Object &JScop, const DataLayout &DL,
std::vector<std::string> *NewAccessStrings = nullptr) {
int StatementIdx = 0;
// Check if key 'statements' is present.
if (!JScop.get("statements")) {
errs() << "JScop file has no key name 'statements'.\n";
return false;
}
const json::Array &statements = *JScop.getArray("statements");
// Check whether the number of indices equals the number of statements
if (statements.size() != S.getSize()) {
errs() << "The number of indices and the number of statements differ.\n";
return false;
}
for (ScopStmt &Stmt : S) {
int MemoryAccessIdx = 0;
const json::Object *Statement = statements[StatementIdx].getAsObject();
assert(Statement);
// Check if key 'accesses' is present.
if (!Statement->get("accesses")) {
errs()
<< "Statement from JScop file has no key name 'accesses' for index "
<< StatementIdx << ".\n";
return false;
}
const json::Array &JsonAccesses = *Statement->getArray("accesses");
// Check whether the number of indices equals the number of memory
// accesses
if (Stmt.size() != JsonAccesses.size()) {
errs() << "The number of memory accesses in the JSop file and the number "
"of memory accesses differ for index "
<< StatementIdx << ".\n";
return false;
}
for (MemoryAccess *MA : Stmt) {
// Check if key 'relation' is present.
const json::Object *JsonMemoryAccess =
JsonAccesses[MemoryAccessIdx].getAsObject();
assert(JsonMemoryAccess);
if (!JsonMemoryAccess->get("relation")) {
errs() << "Memory access number " << MemoryAccessIdx
<< " has no key name 'relation' for statement number "
<< StatementIdx << ".\n";
return false;
}
StringRef Accesses = *JsonMemoryAccess->getString("relation");
isl_map *NewAccessMap =
isl_map_read_from_str(S.getIslCtx().get(), Accesses.str().c_str());
// Check whether the access was parsed successfully
if (!NewAccessMap) {
errs() << "The access was not parsed successfully by ISL.\n";
return false;
}
isl_map *CurrentAccessMap = MA->getAccessRelation().release();
// Check if the number of parameter change
if (isl_map_dim(NewAccessMap, isl_dim_param) !=
isl_map_dim(CurrentAccessMap, isl_dim_param)) {
errs() << "JScop file changes the number of parameter dimensions.\n";
isl_map_free(CurrentAccessMap);
isl_map_free(NewAccessMap);
return false;
}
isl_id *NewOutId;
// If the NewAccessMap has zero dimensions, it is the scalar access; it
// must be the same as before.
// If it has at least one dimension, it's an array access; search for
// its ScopArrayInfo.
if (isl_map_dim(NewAccessMap, isl_dim_out) >= 1) {
NewOutId = isl_map_get_tuple_id(NewAccessMap, isl_dim_out);
auto *SAI = S.getArrayInfoByName(isl_id_get_name(NewOutId));
isl_id *OutId = isl_map_get_tuple_id(CurrentAccessMap, isl_dim_out);
auto *OutSAI = ScopArrayInfo::getFromId(isl::manage(OutId));
if (!SAI || SAI->getElementType() != OutSAI->getElementType()) {
errs() << "JScop file contains access function with undeclared "
"ScopArrayInfo\n";
isl_map_free(CurrentAccessMap);
isl_map_free(NewAccessMap);
isl_id_free(NewOutId);
return false;
}
isl_id_free(NewOutId);
NewOutId = SAI->getBasePtrId().release();
} else {
NewOutId = isl_map_get_tuple_id(CurrentAccessMap, isl_dim_out);
}
NewAccessMap = isl_map_set_tuple_id(NewAccessMap, isl_dim_out, NewOutId);
if (MA->isArrayKind()) {
// We keep the old alignment, thus we cannot allow accesses to memory
// locations that were not accessed before if the alignment of the
// access is not the default alignment.
bool SpecialAlignment = true;
if (LoadInst *LoadI = dyn_cast<LoadInst>(MA->getAccessInstruction())) {
SpecialAlignment =
DL.getABITypeAlign(LoadI->getType()) != LoadI->getAlign();
} else if (StoreInst *StoreI =
dyn_cast<StoreInst>(MA->getAccessInstruction())) {
SpecialAlignment =
DL.getABITypeAlign(StoreI->getValueOperand()->getType()) !=
StoreI->getAlign();
}
if (SpecialAlignment) {
isl_set *NewAccessSet = isl_map_range(isl_map_copy(NewAccessMap));
isl_set *CurrentAccessSet =
isl_map_range(isl_map_copy(CurrentAccessMap));
bool IsSubset = isl_set_is_subset(NewAccessSet, CurrentAccessSet);
isl_set_free(NewAccessSet);
isl_set_free(CurrentAccessSet);
// Check if the JScop file changes the accessed memory.
if (!IsSubset) {
errs() << "JScop file changes the accessed memory\n";
isl_map_free(CurrentAccessMap);
isl_map_free(NewAccessMap);
return false;
}
}
}
// We need to copy the isl_ids for the parameter dimensions to the new
// map. Without doing this the current map would have different
// ids then the new one, even though both are named identically.
for (isl_size i = 0; i < isl_map_dim(CurrentAccessMap, isl_dim_param);
i++) {
isl_id *Id = isl_map_get_dim_id(CurrentAccessMap, isl_dim_param, i);
NewAccessMap = isl_map_set_dim_id(NewAccessMap, isl_dim_param, i, Id);
}
// Copy the old tuple id. This is necessary to retain the user pointer,
// that stores the reference to the ScopStmt this access belongs to.
isl_id *Id = isl_map_get_tuple_id(CurrentAccessMap, isl_dim_in);
NewAccessMap = isl_map_set_tuple_id(NewAccessMap, isl_dim_in, Id);
auto NewAccessDomain = isl_map_domain(isl_map_copy(NewAccessMap));
auto CurrentAccessDomain = isl_map_domain(isl_map_copy(CurrentAccessMap));
if (!isl_set_has_equal_space(NewAccessDomain, CurrentAccessDomain)) {
errs() << "JScop file contains access function with incompatible "
<< "dimensions\n";
isl_map_free(CurrentAccessMap);
isl_map_free(NewAccessMap);
isl_set_free(NewAccessDomain);
isl_set_free(CurrentAccessDomain);
return false;
}
NewAccessDomain =
isl_set_intersect_params(NewAccessDomain, S.getContext().release());
CurrentAccessDomain = isl_set_intersect_params(CurrentAccessDomain,
S.getContext().release());
CurrentAccessDomain =
isl_set_intersect(CurrentAccessDomain, Stmt.getDomain().release());
if (MA->isRead() &&
isl_set_is_subset(CurrentAccessDomain, NewAccessDomain) ==
isl_bool_false) {
errs() << "Mapping not defined for all iteration domain elements\n";
isl_set_free(CurrentAccessDomain);
isl_set_free(NewAccessDomain);
isl_map_free(CurrentAccessMap);
isl_map_free(NewAccessMap);
return false;
}
isl_set_free(CurrentAccessDomain);
isl_set_free(NewAccessDomain);
if (!isl_map_is_equal(NewAccessMap, CurrentAccessMap)) {
// Statistics.
++NewAccessMapFound;
if (NewAccessStrings)
NewAccessStrings->push_back(Accesses.str());
MA->setNewAccessRelation(isl::manage(NewAccessMap));
} else {
isl_map_free(NewAccessMap);
}
isl_map_free(CurrentAccessMap);
MemoryAccessIdx++;
}
StatementIdx++;
}
return true;
}
/// Check whether @p SAI and @p Array represent the same array.
static bool areArraysEqual(ScopArrayInfo *SAI, const json::Object &Array) {
std::string Buffer;
llvm::raw_string_ostream RawStringOstream(Buffer);
// Check if key 'type' is present.
if (!Array.get("type")) {
errs() << "Array has no key 'type'.\n";
return false;
}
// Check if key 'sizes' is present.
if (!Array.get("sizes")) {
errs() << "Array has no key 'sizes'.\n";
return false;
}
// Check if key 'name' is present.
if (!Array.get("name")) {
errs() << "Array has no key 'name'.\n";
return false;
}
if (SAI->getName() != *Array.getString("name"))
return false;
if (SAI->getNumberOfDimensions() != Array.getArray("sizes")->size())
return false;
for (unsigned i = 1; i < Array.getArray("sizes")->size(); i++) {
SAI->getDimensionSize(i)->print(RawStringOstream);
const json::Array &SizesArray = *Array.getArray("sizes");
if (RawStringOstream.str() != SizesArray[i].getAsString().value())
return false;
Buffer.clear();
}
// Check if key 'type' differs from the current one or is not valid.
SAI->getElementType()->print(RawStringOstream);
if (RawStringOstream.str() != Array.getString("type").value()) {
errs() << "Array has not a valid type.\n";
return false;
}
return true;
}
/// Get the accepted primitive type from its textual representation
/// @p TypeTextRepresentation.
///
/// @param TypeTextRepresentation The textual representation of the type.
/// @return The pointer to the primitive type, if this type is accepted
/// or nullptr otherwise.
static Type *parseTextType(const std::string &TypeTextRepresentation,
LLVMContext &LLVMContext) {
std::map<std::string, Type *> MapStrToType = {
{"void", Type::getVoidTy(LLVMContext)},
{"half", Type::getHalfTy(LLVMContext)},
{"float", Type::getFloatTy(LLVMContext)},
{"double", Type::getDoubleTy(LLVMContext)},
{"x86_fp80", Type::getX86_FP80Ty(LLVMContext)},
{"fp128", Type::getFP128Ty(LLVMContext)},
{"ppc_fp128", Type::getPPC_FP128Ty(LLVMContext)},
{"i1", Type::getInt1Ty(LLVMContext)},
{"i8", Type::getInt8Ty(LLVMContext)},
{"i16", Type::getInt16Ty(LLVMContext)},
{"i32", Type::getInt32Ty(LLVMContext)},
{"i64", Type::getInt64Ty(LLVMContext)},
{"i128", Type::getInt128Ty(LLVMContext)}};
auto It = MapStrToType.find(TypeTextRepresentation);
if (It != MapStrToType.end())
return It->second;
errs() << "Textual representation can not be parsed: "
<< TypeTextRepresentation << "\n";
return nullptr;
}
/// Import new arrays from JScop.
///
/// @param S The scop to update.
/// @param JScop The JScop file describing new arrays.
///
/// @returns True if the import succeeded, otherwise False.
static bool importArrays(Scop &S, const json::Object &JScop) {
if (!JScop.get("arrays"))
return true;
const json::Array &Arrays = *JScop.getArray("arrays");
if (Arrays.size() == 0)
return true;
unsigned ArrayIdx = 0;
for (auto &SAI : S.arrays()) {
if (!SAI->isArrayKind())
continue;
if (ArrayIdx + 1 > Arrays.size()) {
errs() << "Not enough array entries in JScop file.\n";
return false;
}
if (!areArraysEqual(SAI, *Arrays[ArrayIdx].getAsObject())) {
errs() << "No match for array '" << SAI->getName() << "' in JScop.\n";
return false;
}
ArrayIdx++;
}
for (; ArrayIdx < Arrays.size(); ArrayIdx++) {
const json::Object &Array = *Arrays[ArrayIdx].getAsObject();
auto *ElementType =
parseTextType(Array.get("type")->getAsString().value().str(),
S.getSE()->getContext());
if (!ElementType) {
errs() << "Error while parsing element type for new array.\n";
return false;
}
const json::Array &SizesArray = *Array.getArray("sizes");
std::vector<unsigned> DimSizes;
for (unsigned i = 0; i < SizesArray.size(); i++) {
auto Size = std::stoi(SizesArray[i].getAsString()->str());
// Check if the size if positive.
if (Size <= 0) {
errs() << "The size at index " << i << " is =< 0.\n";
return false;
}
DimSizes.push_back(Size);
}
auto NewSAI = S.createScopArrayInfo(
ElementType, Array.getString("name").value().str(), DimSizes);
if (Array.get("allocation")) {
NewSAI->setIsOnHeap(Array.getString("allocation").value() == "heap");
}
}
return true;
}
/// Import a Scop from a JSCOP file
/// @param S The scop to be modified
/// @param D Dependence Info
/// @param DL The DataLayout of the function
/// @param NewAccessStrings Optionally record the imported access strings
///
/// @returns true on success, false otherwise. Beware that if this returns
/// false, the Scop may still have been modified. In this case the Scop contains
/// invalid information.
static bool importScop(Scop &S, const Dependences &D, const DataLayout &DL,
std::vector<std::string> *NewAccessStrings = nullptr) {
std::string FileName = ImportDir + "/" + getFileName(S, ImportPostfix);
std::string FunctionName = S.getFunction().getName().str();
errs() << "Reading JScop '" << S.getNameStr() << "' in function '"
<< FunctionName << "' from '" << FileName << "'.\n";
ErrorOr<std::unique_ptr<MemoryBuffer>> result =
MemoryBuffer::getFile(FileName);
std::error_code ec = result.getError();
if (ec) {
errs() << "File could not be read: " << ec.message() << "\n";
return false;
}
Expected<json::Value> ParseResult =
json::parse(result.get().get()->getBuffer());
if (Error E = ParseResult.takeError()) {
errs() << "JSCoP file could not be parsed\n";
errs() << E << "\n";
consumeError(std::move(E));
return false;
}
json::Object &jscop = *ParseResult.get().getAsObject();
bool Success = importContext(S, jscop);
if (!Success)
return false;
Success = importSchedule(S, jscop, D);
if (!Success)
return false;
Success = importArrays(S, jscop);
if (!Success)
return false;
Success = importAccesses(S, jscop, DL, NewAccessStrings);
if (!Success)
return false;
return true;
}
char JSONExporter::ID = 0;
void JSONExporter::printScop(raw_ostream &OS, Scop &S) const { OS << S; }
bool JSONExporter::runOnScop(Scop &S) {
exportScop(S);
return false;
}
void JSONExporter::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<ScopInfoRegionPass>();
}
Pass *polly::createJSONExporterPass() { return new JSONExporter(); }
PreservedAnalyses JSONExportPass::run(Scop &S, ScopAnalysisManager &SAM,
ScopStandardAnalysisResults &SAR,
SPMUpdater &) {
exportScop(S);
return PreservedAnalyses::all();
}
char JSONImporter::ID = 0;
void JSONImporter::printScop(raw_ostream &OS, Scop &S) const {
OS << S;
for (std::vector<std::string>::const_iterator I = NewAccessStrings.begin(),
E = NewAccessStrings.end();
I != E; I++)
OS << "New access function '" << *I << "' detected in JSCOP file\n";
}
bool JSONImporter::runOnScop(Scop &S) {
const Dependences &D =
getAnalysis<DependenceInfo>().getDependences(Dependences::AL_Statement);
const DataLayout &DL = S.getFunction().getParent()->getDataLayout();
if (!importScop(S, D, DL, &NewAccessStrings))
report_fatal_error("Tried to import a malformed jscop file.");
return false;
}
void JSONImporter::getAnalysisUsage(AnalysisUsage &AU) const {
ScopPass::getAnalysisUsage(AU);
AU.addRequired<DependenceInfo>();
// TODO: JSONImporter should throw away DependenceInfo.
AU.addPreserved<DependenceInfo>();
}
Pass *polly::createJSONImporterPass() { return new JSONImporter(); }
PreservedAnalyses JSONImportPass::run(Scop &S, ScopAnalysisManager &SAM,
ScopStandardAnalysisResults &SAR,
SPMUpdater &) {
const Dependences &D =
SAM.getResult<DependenceAnalysis>(S, SAR).getDependences(
Dependences::AL_Statement);
const DataLayout &DL = S.getFunction().getParent()->getDataLayout();
if (!importScop(S, D, DL))
report_fatal_error("Tried to import a malformed jscop file.");
// This invalidates all analyses on Scop.
PreservedAnalyses PA;
PA.preserveSet<AllAnalysesOn<Module>>();
PA.preserveSet<AllAnalysesOn<Function>>();
PA.preserveSet<AllAnalysesOn<Loop>>();
return PA;
}
INITIALIZE_PASS_BEGIN(JSONExporter, "polly-export-jscop",
"Polly - Export Scops as JSON"
" (Writes a .jscop file for each Scop)",
false, false);
INITIALIZE_PASS_DEPENDENCY(DependenceInfo)
INITIALIZE_PASS_END(JSONExporter, "polly-export-jscop",
"Polly - Export Scops as JSON"
" (Writes a .jscop file for each Scop)",
false, false)
INITIALIZE_PASS_BEGIN(JSONImporter, "polly-import-jscop",
"Polly - Import Scops from JSON"
" (Reads a .jscop file for each Scop)",
false, false);
INITIALIZE_PASS_DEPENDENCY(DependenceInfo)
INITIALIZE_PASS_END(JSONImporter, "polly-import-jscop",
"Polly - Import Scops from JSON"
" (Reads a .jscop file for each Scop)",
false, false)
//===----------------------------------------------------------------------===//
namespace {
/// Print result from JSONImporter.
class JSONImporterPrinterLegacyPass final : public ScopPass {
public:
static char ID;
JSONImporterPrinterLegacyPass() : JSONImporterPrinterLegacyPass(outs()){};
explicit JSONImporterPrinterLegacyPass(llvm::raw_ostream &OS)
: ScopPass(ID), OS(OS) {}
bool runOnScop(Scop &S) override {
JSONImporter &P = getAnalysis<JSONImporter>();
OS << "Printing analysis '" << P.getPassName() << "' for region: '"
<< S.getRegion().getNameStr() << "' in function '"
<< S.getFunction().getName() << "':\n";
P.printScop(OS, S);
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
ScopPass::getAnalysisUsage(AU);
AU.addRequired<JSONImporter>();
AU.setPreservesAll();
}
private:
llvm::raw_ostream &OS;
};
char JSONImporterPrinterLegacyPass::ID = 0;
} // namespace
Pass *polly::createJSONImporterPrinterLegacyPass(llvm::raw_ostream &OS) {
return new JSONImporterPrinterLegacyPass(OS);
}
INITIALIZE_PASS_BEGIN(JSONImporterPrinterLegacyPass, "polly-print-import-jscop",
"Polly - Print Scop import result", false, false)
INITIALIZE_PASS_DEPENDENCY(JSONImporter)
INITIALIZE_PASS_END(JSONImporterPrinterLegacyPass, "polly-print-import-jscop",
"Polly - Print Scop import result", false, false)
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