source: icGREP/icgrep-devel/icgrep/u8u16.cpp @ 5141

Last change on this file since 5141 was 5141, checked in by cameron, 3 years ago

pablo.Lookahead support updated for stream set access/kernel system

File size: 15.7 KB
Line 
1/*
2 *  Copyright (c) 2016 International Characters.
3 *  This software is licensed to the public under the Open Software License 3.0.
4 *  icgrep is a trademark of International Characters.
5 */
6
7#include <string>
8#include <iostream>
9#include <fstream>
10#include <sstream>
11
12#include <llvm/IR/Function.h>
13#include <llvm/IR/Module.h>
14#include <llvm/ExecutionEngine/ExecutionEngine.h>
15#include <llvm/ExecutionEngine/MCJIT.h>
16#include <llvm/IRReader/IRReader.h>
17#include <llvm/IR/Verifier.h>
18#include <llvm/Support/Debug.h>
19
20#include <llvm/Support/CommandLine.h>
21
22#include <toolchain.h>
23#include <re/re_cc.h>
24#include <cc/cc_compiler.h>
25#include <pablo/pablo_toolchain.h>
26#include <pablo/pablo_kernel.h>
27#include <pablo/function.h>
28#include <IDISA/idisa_builder.h>
29#include <IDISA/idisa_target.h>
30#include <kernels/pipeline.h>
31#include <kernels/interface.h>
32#include <kernels/kernel.h>
33#include <kernels/s2p_kernel.h>
34#include <kernels/p2s_kernel.h>
35#include <kernels/deletion.h>
36#include <kernels/stdout_kernel.h>
37
38
39// mmap system
40#include <boost/filesystem.hpp>
41#include <boost/iostreams/device/mapped_file.hpp>
42
43#include <fcntl.h>
44static cl::OptionCategory u8u16Options("u8u16 Options",
45                                            "Transcoding control options.");
46
47static cl::list<std::string> inputFiles(cl::Positional, cl::desc("<input file ...>"), cl::OneOrMore, cl::cat(u8u16Options));
48
49//
50//
51//
52namespace pablo {
53
54PabloFunction * u8u16_pablo() {
55    //  input: 8 basis bit streams
56    //  output: 16 u8-indexed streams, + delmask stream + error stream
57    PabloFunction * function = PabloFunction::Create("u8u16", 8, 18);
58    cc::CC_Compiler ccc(*function);
59   
60    PabloBuilder pBuilder(ccc.getBuilder().getPabloBlock(), ccc.getBuilder());
61    const std::vector<Var *> u8_bits = ccc.getBasisBits();
62    // Outputs
63    Assign * u16_hi[8];
64    Assign * u16_lo[8];
65    Assign * delmask;
66    Assign * error_mask;
67   
68    // The logic for processing non-ASCII bytes is to be embedded within an if-hierarchy.
69    PabloAST * nonASCII = ccc.compileCC(re::makeCC(0x80, 0xFF));
70   
71    // Builder for the if statement handling all non-ASCII logic
72    PabloBuilder nAb = PabloBuilder::Create(pBuilder);
73    // Bits 3 through 7 of a 2-byte prefix are data bits, needed to
74    // produce the UTF-16 code unit data ...,
75    PabloAST * bit3a1 = nAb.createAdvance(u8_bits[3], 1);
76    PabloAST * bit4a1 = nAb.createAdvance(u8_bits[4], 1);
77    PabloAST * bit5a1 = nAb.createAdvance(u8_bits[5], 1);
78    PabloAST * bit6a1 = nAb.createAdvance(u8_bits[6], 1);
79    PabloAST * bit7a1 = nAb.createAdvance(u8_bits[7], 1);
80   
81    // Entry condition for 3 or 4 byte sequences: we have a prefix byte in the range 0xE0-0xFF.
82    PabloAST * pfx34 = ccc.compileCC(re::makeCC(0xE0, 0xFF), nAb);
83    // Builder for the if statement handling all logic for 3- and 4-byte sequences.
84    PabloBuilder p34b = PabloBuilder::Create(nAb);
85    // Bits 4 through 7 of a 3-byte prefix are data bits.  They must be moved
86    // to the final position of the 3-byte sequence.
87    PabloAST * bit2a1 = p34b.createAdvance(u8_bits[2], 1);
88    PabloAST * bit4a2 = p34b.createAdvance(bit4a1, 1);
89    PabloAST * bit5a2 = p34b.createAdvance(bit5a1, 1);
90    PabloAST * bit6a2 = p34b.createAdvance(bit6a1, 1);
91    PabloAST * bit7a2 = p34b.createAdvance(bit7a1, 1);
92    //
93    // Logic for 4-byte UTF-8 sequences
94    //
95    // Entry condition  or 4 byte sequences: we have a prefix byte in the range 0xF0-0xFF.
96    PabloAST * pfx4 = ccc.compileCC(re::makeCC(0xF0, 0xFF), p34b);
97    // Builder for the if statement handling all logic for 4-byte sequences only.
98    PabloBuilder p4b = PabloBuilder::Create(p34b);
99    // Illegal 4-byte sequences
100    PabloAST * F0 = ccc.compileCC(re::makeCC(0xF0), p4b);
101    PabloAST * F4 = ccc.compileCC(re::makeCC(0xF4), p4b);
102    PabloAST * F0_err = p4b.createAnd(p4b.createAdvance(F0, 1), ccc.compileCC(re::makeCC(0x80, 0x8F), p4b));
103    PabloAST * F4_err = p4b.createAnd(p4b.createAdvance(F4, 1), ccc.compileCC(re::makeCC(0x90, 0xBF), p4b));
104    PabloAST * F5_FF = ccc.compileCC(re::makeCC(0xF5, 0xFF), p4b);
105    Assign * FX_err = p4b.createAssign("FX_err", p4b.createOr(F5_FF, p4b.createOr(F0_err, F4_err)));
106    //
107    // 4-byte prefixes have a scope that extends over the next 3 bytes.
108    Assign * u8scope42 = p4b.createAssign("u8scope42", p4b.createAdvance(pfx4, 1));
109    Assign * u8scope43 = p4b.createAssign("u8scope43", p4b.createAdvance(u8scope42, 1));
110    Assign * u8scope44 = p4b.createAssign("u8scope44", p4b.createAdvance(u8scope43, 1));
111    //
112   
113    //  From the 4-byte sequence 11110abc 10defghi 10jklmno 10pqrstu,
114    //  we must calculate the value abcde - 1 to produce the bit values
115    //  for u16_hi6, hi7, lo0, lo1 at the scope43 position.
116    Assign * s43_lo1 = p4b.createAssign("scope43_lo1", p4b.createAnd(u8scope43, p4b.createNot(bit3a1)));           // e - 1
117    Assign * s43_lo0 = p4b.createAssign("scope43_lo0", p4b.createAnd(u8scope43, p4b.createXor(bit2a1, s43_lo1)));  // d - borrow
118    PabloAST * brw1 = p4b.createAnd(s43_lo1, p4b.createNot(bit2a1));
119    Assign * s43_hi7 = p4b.createAssign("scope43_hi7", p4b.createAnd(u8scope43, p4b.createXor(bit7a2, brw1)));     // c - borrow
120    PabloAST * brw2 = p4b.createAnd(brw1, p4b.createNot(bit7a2));
121    Assign * s43_hi6 = p4b.createAssign("scope43_hi6", p4b.createAnd(u8scope43, p4b.createXor(bit6a2, brw2)));     // b - borrow
122    //
123    Assign * s43_lo2 = p4b.createAssign("scope43_lo2", p4b.createAnd(u8scope43, bit4a1));
124    Assign * s43_lo3 = p4b.createAssign("scope43_lo3", p4b.createAnd(u8scope43, bit5a1));
125    Assign * s43_lo4 = p4b.createAssign("scope43_lo4", p4b.createAnd(u8scope43, bit6a1));
126    Assign * s43_lo5 = p4b.createAssign("scope43_lo5", p4b.createAnd(u8scope43, bit7a1));
127    Assign * s43_lo6 = p4b.createAssign("scope43_lo6", p4b.createAnd(u8scope43, u8_bits[2]));
128    Assign * s43_lo7 = p4b.createAssign("scope43_lo7", p4b.createAnd(u8scope43, u8_bits[3]));
129    //
130    //
131    p34b.createIf(pfx4,
132                  {FX_err, u8scope42, u8scope43, u8scope44, s43_hi6, s43_hi7,
133                   s43_lo0, s43_lo1, s43_lo2, s43_lo3, s43_lo4, s43_lo5, s43_lo6, s43_lo7},
134                   p4b);
135    //
136    // Combined logic for 3 and 4 byte sequences
137    //
138    PabloAST * pfx3 = ccc.compileCC(re::makeCC(0xE0, 0xEF), p34b);
139    Assign * u8scope32 = p34b.createAssign("u8scope32", p34b.createAdvance(pfx3, 1));
140    Assign * u8scope33 = p34b.createAssign("u8scope33", p34b.createAdvance(u8scope32, 1));
141
142    // Illegal 3-byte sequences
143    PabloAST * E0 = ccc.compileCC(re::makeCC(0xE0), p34b);
144    PabloAST * ED = ccc.compileCC(re::makeCC(0xED), p34b);
145    PabloAST * E0_err = p34b.createAnd(p34b.createAdvance(E0, 1), ccc.compileCC(re::makeCC(0x80, 0x9F), p34b));
146    PabloAST * ED_err = p34b.createAnd(p34b.createAdvance(ED, 1), ccc.compileCC(re::makeCC(0xA0, 0xBF), p34b));
147    Assign * EX_FX_err = p34b.createAssign("EX_FX_err", p34b.createOr(p34b.createOr(E0_err, ED_err), FX_err));
148    // Two surrogate UTF-16 units are computed at the 3rd and 4th positions of 4-byte sequences.
149    PabloAST * surrogate = p34b.createOr(u8scope43, u8scope44);
150   
151    Assign * p34del = p34b.createAssign("p34del", p34b.createOr(u8scope32, u8scope42));
152
153
154    // The high 5 bits of the UTF-16 code unit are only nonzero for 3 and 4-byte
155    // UTF-8 sequences.
156    u16_hi[0] = p34b.createAssign("u16_hi0", p34b.createOr(p34b.createAnd(u8scope33, bit4a2), surrogate));
157    u16_hi[1] = p34b.createAssign("u16_hi1", p34b.createOr(p34b.createAnd(u8scope33, bit5a2), surrogate));
158    u16_hi[2] = p34b.createAssign("u16_hi2", p34b.createAnd(u8scope33, bit6a2));
159    u16_hi[3] = p34b.createAssign("u16_hi3", p34b.createOr(p34b.createAnd(u8scope33, bit7a2), surrogate));
160    u16_hi[4] = p34b.createAssign("u16_hi4", p34b.createOr(p34b.createAnd(u8scope33, bit2a1), surrogate));
161   
162    //
163    nAb.createIf(pfx34, 
164                 {u8scope33, EX_FX_err, p34del, 
165                  u16_hi[0], u16_hi[1], u16_hi[2], u16_hi[3], u16_hi[4], u8scope44, s43_hi6, s43_hi7,
166                  s43_lo0, s43_lo1, s43_lo2, s43_lo3, s43_lo4, s43_lo5, s43_lo6, s43_lo7},
167                 p34b);
168    //
169    // Combined logic for 2, 3 and 4 byte sequences
170    //
171    PabloAST * pfx2 = ccc.compileCC(re::makeCC(0xC0, 0xDF), nAb);
172    PabloAST * u8scope22 = nAb.createAdvance(pfx2, 1);
173    Assign * u8lastscope = nAb.createAssign("u8lastscope", nAb.createOr(u8scope22, nAb.createOr(u8scope33, u8scope44)));
174    PabloAST * u8anyscope = nAb.createOr(u8lastscope, p34del);
175
176    PabloAST * C0_C1_err = ccc.compileCC(re::makeCC(0xC0, 0xC1), nAb);
177    PabloAST * scope_suffix_mismatch = nAb.createXor(u8anyscope, ccc.compileCC(re::makeCC(0x80, 0xBF), nAb));
178    error_mask = nAb.createAssign("errormask", nAb.createOr(scope_suffix_mismatch, nAb.createOr(C0_C1_err, EX_FX_err)));
179    delmask = nAb.createAssign("delmask", nAb.createOr(p34del, ccc.compileCC(re::makeCC(0xC0, 0xFF), nAb)));
180   
181    // The low 3 bits of the high byte of the UTF-16 code unit as well as the high bit of the
182    // low byte are only nonzero for 2, 3 and 4 byte sequences.
183    u16_hi[5] = nAb.createAssign("u16_hi5", nAb.createOr(nAb.createAnd(u8lastscope, bit3a1), u8scope44));
184    u16_hi[6] = nAb.createAssign("u16_hi6", nAb.createOr(nAb.createAnd(u8lastscope, bit4a1), s43_hi6));
185    u16_hi[7] = nAb.createAssign("u16_hi7", nAb.createOr(nAb.createAnd(u8lastscope, bit5a1), s43_hi7));
186    u16_lo[0] = nAb.createAssign("u16_lo0", nAb.createOr(nAb.createAnd(u8lastscope, bit6a1), s43_lo0));
187    Assign * p234_lo1 = nAb.createAssign("p234_lo1", nAb.createOr(nAb.createAnd(u8lastscope, bit7a1), s43_lo1));
188
189    pBuilder.createIf(nonASCII, 
190                      {error_mask, delmask, u8lastscope,
191                       u16_hi[0], u16_hi[1], u16_hi[2], u16_hi[3], u16_hi[4], u16_hi[5], u16_hi[6], u16_hi[7],
192                       u16_lo[0], p234_lo1, s43_lo2, s43_lo3, s43_lo4, s43_lo5, s43_lo6, s43_lo7},
193                      nAb);
194    //
195    //
196    PabloAST * ASCII = ccc.compileCC(re::makeCC(0x0, 0x7F));
197    PabloAST * last_byte = pBuilder.createOr(ASCII, u8lastscope);
198    u16_lo[1] = pBuilder.createAssign("u16_lo1", pBuilder.createOr(pBuilder.createAnd(ASCII, u8_bits[1]), p234_lo1));
199    u16_lo[2] = pBuilder.createAssign("u16_lo2", pBuilder.createOr(pBuilder.createAnd(last_byte, u8_bits[2]), s43_lo2));
200    u16_lo[3] = pBuilder.createAssign("u16_lo3", pBuilder.createOr(pBuilder.createAnd(last_byte, u8_bits[3]), s43_lo3));
201    u16_lo[4] = pBuilder.createAssign("u16_lo4", pBuilder.createOr(pBuilder.createAnd(last_byte, u8_bits[4]), s43_lo4));
202    u16_lo[5] = pBuilder.createAssign("u16_lo5", pBuilder.createOr(pBuilder.createAnd(last_byte, u8_bits[5]), s43_lo5));
203    u16_lo[6] = pBuilder.createAssign("u16_lo6", pBuilder.createOr(pBuilder.createAnd(last_byte, u8_bits[6]), s43_lo6));
204    u16_lo[7] = pBuilder.createAssign("u16_lo7", pBuilder.createOr(pBuilder.createAnd(last_byte, u8_bits[7]), s43_lo7));
205   
206    for (unsigned i = 0; i < 8; i++) {
207        function->setResult(i, pBuilder.createAssign("u16_hi" + std::to_string(i), u16_hi[i]));
208        function->setResult(i+8, pBuilder.createAssign("u16_lo" + std::to_string(i), u16_lo[i]));
209    }
210    function->setResult(16, pBuilder.createAssign("delbits", delmask));
211    function->setResult(17, pBuilder.createAssign("errors", error_mask));
212
213    return function;
214}
215}
216
217
218
219using namespace kernel;
220using namespace parabix;
221
222const unsigned u16OutputBlocks = 64;
223
224Function * u8u16Pipeline(Module * mMod, IDISA::IDISA_Builder * iBuilder, pablo::PabloFunction * function) {
225    Type * mBitBlockType = iBuilder->getBitBlockType();
226
227   
228    ExternalUnboundedBuffer ByteStream(iBuilder, StreamSetType(1, i8));
229    SingleBlockBuffer BasisBits(iBuilder, StreamSetType(8, i1));
230    SingleBlockBuffer U8u16Bits(iBuilder, StreamSetType(18, i1));
231    SingleBlockBuffer U16Bits(iBuilder, StreamSetType(16, i1));
232    SingleBlockBuffer DeletionCounts(iBuilder, StreamSetType(1, i1));
233    CircularBuffer U16out(iBuilder, StreamSetType(1, i16), u16OutputBlocks);
234
235    s2pKernel  s2pk(iBuilder);
236    s2pk.generateKernel({&ByteStream}, {&BasisBits});
237
238    pablo_function_passes(function);
239    pablo::PabloKernel  u8u16k(iBuilder, "u8u16", function, {});
240    u8u16k.generateKernel({&BasisBits}, {&U8u16Bits});
241   
242    deletionKernel delK(iBuilder, iBuilder->getBitBlockWidth()/16, 16);
243    delK.generateKernel({&U8u16Bits}, {&U16Bits, &DeletionCounts});
244   
245    p2s_16Kernel_withCompressedOutput p2sk(iBuilder);
246    p2sk.generateKernel({&U16Bits, &DeletionCounts}, {&U16out});
247   
248    Type * const size_ty = iBuilder->getSizeTy();
249    Type * const voidTy = Type::getVoidTy(mMod->getContext());
250    Type * const inputType = PointerType::get(ArrayType::get(ArrayType::get(mBitBlockType, 8), 1), 0);
251   
252    Function * const main = cast<Function>(mMod->getOrInsertFunction("Main", voidTy, inputType, size_ty, nullptr));
253    main->setCallingConv(CallingConv::C);
254    Function::arg_iterator args = main->arg_begin();
255   
256    Value * const inputStream = &*(args++);
257    inputStream->setName("input");
258    Value * const fileSize = &*(args++);
259    fileSize->setName("fileSize");
260   
261    iBuilder->SetInsertPoint(BasicBlock::Create(mMod->getContext(), "entry", main,0));
262       
263
264    ByteStream.setStreamSetBuffer(inputStream);
265    BasisBits.allocateBuffer();
266    U8u16Bits.allocateBuffer();
267    U16Bits.allocateBuffer();
268    DeletionCounts.allocateBuffer();
269    U16out.allocateBuffer();
270
271    Value * s2pInstance = s2pk.createInstance({});
272    Value * u8u16Instance = u8u16k.createInstance({});
273    Value * delInstance = delK.createInstance({});
274    Value * p2sInstance = p2sk.createInstance({});
275   
276    generatePipelineLoop(iBuilder, {&s2pk, &u8u16k, &delK, &p2sk}, {s2pInstance, u8u16Instance, delInstance, p2sInstance}, fileSize);
277   
278    iBuilder->CreateRetVoid();
279    return main;
280}
281
282
283
284
285
286typedef void (*u8u16FunctionType)(char * byte_data, size_t filesize);
287
288static ExecutionEngine * u8u16Engine = nullptr;
289
290u8u16FunctionType u8u16CodeGen(void) {
291                           
292    Module * M = new Module("u8u16", getGlobalContext());
293    IDISA::IDISA_Builder * idb = IDISA::GetIDISA_Builder(M);
294
295    pablo::PabloFunction * function = pablo::u8u16_pablo();
296   
297    llvm::Function * main_IR = u8u16Pipeline(M, idb, function);
298   
299    verifyModule(*M, &dbgs());
300    //std::cerr << "ExecuteKernels(); done\n";
301    u8u16Engine = JIT_to_ExecutionEngine(M);
302   
303    u8u16Engine->finalizeObject();
304    //std::cerr << "finalizeObject(); done\n";
305
306    delete idb;
307    return reinterpret_cast<u8u16FunctionType>(u8u16Engine->getPointerToFunction(main_IR));
308}
309
310void u8u16(u8u16FunctionType fn_ptr, const std::string & fileName) {
311    std::string mFileName = fileName;
312    size_t mFileSize;
313    char * mFileBuffer;
314   
315    const boost::filesystem::path file(mFileName);
316    if (exists(file)) {
317        if (is_directory(file)) {
318            return;
319        }
320    } else {
321        std::cerr << "Error: cannot open " << mFileName << " for processing. Skipped.\n";
322        return;
323    }
324   
325    mFileSize = file_size(file);
326    boost::iostreams::mapped_file_source mFile;
327    if (mFileSize == 0) {
328        mFileBuffer = nullptr;
329    }
330    else {
331        try {
332            mFile.open(mFileName);
333        } catch (std::exception &e) {
334            std::cerr << "Error: Boost mmap of " << mFileName << ": " << e.what() << std::endl;
335            return;
336        }
337        mFileBuffer = const_cast<char *>(mFile.data());
338    }
339    //std::cerr << "mFileSize =" << mFileSize << "\n";
340    //std::cerr << "fn_ptr =" << std::hex << reinterpret_cast<intptr_t>(fn_ptr) << "\n";
341
342    fn_ptr(mFileBuffer, mFileSize);
343
344    mFile.close();
345   
346}
347
348
349int main(int argc, char *argv[]) {
350    cl::HideUnrelatedOptions(ArrayRef<const cl::OptionCategory *>{&u8u16Options, pablo::pablo_toolchain_flags(), codegen::codegen_flags()});
351    cl::ParseCommandLineOptions(argc, argv);
352
353    u8u16FunctionType fn_ptr = u8u16CodeGen();
354
355    for (unsigned i = 0; i != inputFiles.size(); ++i) {
356        u8u16(fn_ptr, inputFiles[i]);
357    }
358
359    delete u8u16Engine;
360
361    return 0;
362}
363
364                       
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