RSCompilerDriver.cpp revision 0784365a38fd5a9c08dd484f9ba549328d4dff97 
1/*
2 * Copyright 2012, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "bcc/Renderscript/RSCompilerDriver.h"
18
19#include <llvm/IR/Module.h>
20#include <llvm/Support/CommandLine.h>
21#include <llvm/Support/Path.h>
22#include <llvm/Support/raw_ostream.h>
23
24#include "bcinfo/BitcodeWrapper.h"
25
26#include "bcc/Compiler.h"
27#include "bcc/Renderscript/RSExecutable.h"
28#include "bcc/Renderscript/RSScript.h"
29#include "bcc/Support/CompilerConfig.h"
30#include "bcc/Support/TargetCompilerConfigs.h"
31#include "bcc/Source.h"
32#include "bcc/Support/FileMutex.h"
33#include "bcc/Support/Log.h"
34#include "bcc/Support/InputFile.h"
35#include "bcc/Support/Initialization.h"
36#include "bcc/Support/Sha1Util.h"
37#include "bcc/Support/OutputFile.h"
38
39#ifdef HAVE_ANDROID_OS
40#include <cutils/properties.h>
41#endif
42#include <utils/String8.h>
43#include <utils/StopWatch.h>
44
45using namespace bcc;
46
47RSCompilerDriver::RSCompilerDriver(bool pUseCompilerRT) :
48    mConfig(NULL), mCompiler(), mCompilerRuntime(NULL), mDebugContext(false),
49    mEnableGlobalMerge(true) {
50  init::Initialize();
51  // Chain the symbol resolvers for compiler_rt and RS runtimes.
52  if (pUseCompilerRT) {
53    mCompilerRuntime = new CompilerRTSymbolResolver();
54    mResolver.chainResolver(*mCompilerRuntime);
55  }
56  mResolver.chainResolver(mRSRuntime);
57}
58
59RSCompilerDriver::~RSCompilerDriver() {
60  delete mCompilerRuntime;
61  delete mConfig;
62}
63
64RSExecutable *
65RSCompilerDriver::loadScript(const char *pCacheDir, const char *pResName,
66                             const char *pBitcode, size_t pBitcodeSize) {
67  //android::StopWatch load_time("bcc: RSCompilerDriver::loadScript time");
68  if ((pCacheDir == NULL) || (pResName == NULL)) {
69    ALOGE("Missing pCacheDir and/or pResName");
70    return NULL;
71  }
72
73  if ((pBitcode == NULL) || (pBitcodeSize <= 0)) {
74    ALOGE("No bitcode supplied! (bitcode: %p, size of bitcode: %zu)",
75          pBitcode, pBitcodeSize);
76    return NULL;
77  }
78
79  RSInfo::DependencyTableTy dep_info;
80  uint8_t bitcode_sha1[20];
81  Sha1Util::GetSHA1DigestFromBuffer(bitcode_sha1, pBitcode, pBitcodeSize);
82
83  // {pCacheDir}/{pResName}.o
84  llvm::SmallString<80> output_path(pCacheDir);
85  llvm::sys::path::append(output_path, pResName);
86  llvm::sys::path::replace_extension(output_path, ".o");
87
88  dep_info.push(std::make_pair(output_path.c_str(), bitcode_sha1));
89
90  //===--------------------------------------------------------------------===//
91  // Acquire the read lock for reading the Script object file.
92  //===--------------------------------------------------------------------===//
93  FileMutex<FileBase::kReadLock> read_output_mutex(output_path.c_str());
94
95  if (read_output_mutex.hasError() || !read_output_mutex.lock()) {
96    ALOGE("Unable to acquire the read lock for %s! (%s)", output_path.c_str(),
97          read_output_mutex.getErrorMessage().c_str());
98    return NULL;
99  }
100
101  //===--------------------------------------------------------------------===//
102  // Read the output object file.
103  //===--------------------------------------------------------------------===//
104  InputFile *object_file = new (std::nothrow) InputFile(output_path.c_str());
105
106  if ((object_file == NULL) || object_file->hasError()) {
107      //      ALOGE("Unable to open the %s for read! (%s)", output_path.c_str(),
108      //            object_file->getErrorMessage().c_str());
109    delete object_file;
110    return NULL;
111  }
112
113  //===--------------------------------------------------------------------===//
114  // Acquire the read lock on object_file for reading its RS info file.
115  //===--------------------------------------------------------------------===//
116  android::String8 info_path = RSInfo::GetPath(output_path.c_str());
117
118  if (!object_file->lock()) {
119    ALOGE("Unable to acquire the read lock on %s for reading %s! (%s)",
120          output_path.c_str(), info_path.string(),
121          object_file->getErrorMessage().c_str());
122    delete object_file;
123    return NULL;
124  }
125
126 //===---------------------------------------------------------------------===//
127  // Open and load the RS info file.
128  //===--------------------------------------------------------------------===//
129  InputFile info_file(info_path.string());
130  RSInfo *info = RSInfo::ReadFromFile(info_file, dep_info);
131
132  // Release the lock on object_file.
133  object_file->unlock();
134
135  if (info == NULL) {
136    delete object_file;
137    return NULL;
138  }
139
140  //===--------------------------------------------------------------------===//
141  // Create the RSExecutable.
142  //===--------------------------------------------------------------------===//
143  RSExecutable *result = RSExecutable::Create(*info, *object_file, mResolver);
144  if (result == NULL) {
145    delete object_file;
146    delete info;
147    return NULL;
148  }
149
150  return result;
151}
152
153#if defined(DEFAULT_ARM_CODEGEN)
154extern llvm::cl::opt<bool> EnableGlobalMerge;
155#endif
156
157bool RSCompilerDriver::setupConfig(const RSScript &pScript) {
158  bool changed = false;
159
160  const llvm::CodeGenOpt::Level script_opt_level =
161      static_cast<llvm::CodeGenOpt::Level>(pScript.getOptimizationLevel());
162
163  if (mConfig != NULL) {
164    // Renderscript bitcode may have their optimization flag configuration
165    // different than the previous run of RS compilation.
166    if (mConfig->getOptimizationLevel() != script_opt_level) {
167      mConfig->setOptimizationLevel(script_opt_level);
168      changed = true;
169    }
170  } else {
171    // Haven't run the compiler ever.
172    mConfig = new (std::nothrow) DefaultCompilerConfig();
173    if (mConfig == NULL) {
174      // Return false since mConfig remains NULL and out-of-memory.
175      return false;
176    }
177    mConfig->setOptimizationLevel(script_opt_level);
178#if defined(DEFAULT_ARM_CODEGEN)
179    EnableGlobalMerge = mEnableGlobalMerge;
180#endif
181    changed = true;
182  }
183
184#if defined(DEFAULT_ARM_CODEGEN)
185  // NEON should be disable when full-precision floating point is required.
186  assert((pScript.getInfo() != NULL) && "NULL RS info!");
187  if (pScript.getInfo()->getFloatPrecisionRequirement() == RSInfo::FP_Full) {
188    // Must be ARMCompilerConfig.
189    ARMCompilerConfig *arm_config = static_cast<ARMCompilerConfig *>(mConfig);
190    changed |= arm_config->enableNEON(/* pEnable */false);
191  }
192#endif
193
194  return changed;
195}
196
197Compiler::ErrorCode
198RSCompilerDriver::compileScript(RSScript &pScript,
199                                const char* pScriptName,
200                                const char *pOutputPath,
201                                const char *pRuntimePath,
202                                const RSInfo::DependencyTableTy &pDeps,
203                                bool pSkipLoad, bool pDumpIR) {
204  //android::StopWatch compile_time("bcc: RSCompilerDriver::compileScript time");
205  RSInfo *info = NULL;
206
207  //===--------------------------------------------------------------------===//
208  // Extract RS-specific information from source bitcode.
209  //===--------------------------------------------------------------------===//
210  // RS info may contains configuration (such as #optimization_level) to the
211  // compiler therefore it should be extracted before compilation.
212  info = RSInfo::ExtractFromSource(pScript.getSource(), pDeps);
213  if (info == NULL) {
214    return Compiler::kErrInvalidSource;
215  }
216
217  //===--------------------------------------------------------------------===//
218  // Associate script with its info
219  //===--------------------------------------------------------------------===//
220  // This is required since RS compiler may need information in the info file
221  // to do some transformation (e.g., expand foreach-able function.)
222  pScript.setInfo(info);
223
224  //===--------------------------------------------------------------------===//
225  // Link RS script with Renderscript runtime.
226  //===--------------------------------------------------------------------===//
227  if (!RSScript::LinkRuntime(pScript, pRuntimePath)) {
228    ALOGE("Failed to link script '%s' with Renderscript runtime!", pScriptName);
229    return Compiler::kErrInvalidSource;
230  }
231
232  {
233    // FIXME(srhines): Windows compilation can't use locking like this, but
234    // we also don't need to worry about concurrent writers of the same file.
235#ifndef USE_MINGW
236    //===------------------------------------------------------------------===//
237    // Acquire the write lock for writing output object file.
238    //===------------------------------------------------------------------===//
239    FileMutex<FileBase::kWriteLock> write_output_mutex(pOutputPath);
240
241    if (write_output_mutex.hasError() || !write_output_mutex.lock()) {
242      ALOGE("Unable to acquire the lock for writing %s! (%s)",
243            pOutputPath, write_output_mutex.getErrorMessage().c_str());
244      return Compiler::kErrInvalidSource;
245    }
246#endif
247
248    // Open the output file for write.
249    OutputFile output_file(pOutputPath, FileBase::kTruncate);
250
251    if (output_file.hasError()) {
252        ALOGE("Unable to open %s for write! (%s)", pOutputPath,
253              output_file.getErrorMessage().c_str());
254      return Compiler::kErrInvalidSource;
255    }
256
257    // Setup the config to the compiler.
258    bool compiler_need_reconfigure = setupConfig(pScript);
259
260    if (mConfig == NULL) {
261      ALOGE("Failed to setup config for RS compiler to compile %s!",
262            pOutputPath);
263      return Compiler::kErrInvalidSource;
264    }
265
266    if (compiler_need_reconfigure) {
267      Compiler::ErrorCode err = mCompiler.config(*mConfig);
268      if (err != Compiler::kSuccess) {
269        ALOGE("Failed to config the RS compiler for %s! (%s)",pOutputPath,
270              Compiler::GetErrorString(err));
271        return Compiler::kErrInvalidSource;
272      }
273    }
274
275    OutputFile *ir_file = NULL;
276    llvm::raw_fd_ostream *IRStream = NULL;
277    if (pDumpIR) {
278      android::String8 path(pOutputPath);
279      path.append(".ll");
280      ir_file = new OutputFile(path.string(), FileBase::kTruncate);
281      IRStream = ir_file->dup();
282    }
283
284    // Run the compiler.
285    Compiler::ErrorCode compile_result = mCompiler.compile(pScript,
286                                                           output_file, IRStream);
287
288    if (ir_file) {
289      ir_file->close();
290      delete ir_file;
291    }
292
293    if (compile_result != Compiler::kSuccess) {
294      ALOGE("Unable to compile the source to file %s! (%s)", pOutputPath,
295            Compiler::GetErrorString(compile_result));
296      return Compiler::kErrInvalidSource;
297    }
298  }
299
300  // No need to produce an RSExecutable in this case.
301  // TODO: Error handling in this case is nonexistent.
302  if (pSkipLoad) {
303    return Compiler::kSuccess;
304  }
305
306  {
307    android::String8 info_path = RSInfo::GetPath(pOutputPath);
308    OutputFile info_file(info_path.string(), FileBase::kTruncate);
309
310    if (info_file.hasError()) {
311      ALOGE("Failed to open the info file %s for write! (%s)",
312            info_path.string(), info_file.getErrorMessage().c_str());
313      return Compiler::kErrInvalidSource;
314    }
315
316    FileMutex<FileBase::kWriteLock> write_info_mutex(info_path.string());
317    if (write_info_mutex.hasError() || !write_info_mutex.lock()) {
318      ALOGE("Unable to acquire the lock for writing %s! (%s)",
319            info_path.string(), write_info_mutex.getErrorMessage().c_str());
320      return Compiler::kErrInvalidSource;
321    }
322
323    // Perform the write.
324    if (!info->write(info_file)) {
325      ALOGE("Failed to sync the RS info file %s!", info_path.string());
326      return Compiler::kErrInvalidSource;
327    }
328  }
329
330  return Compiler::kSuccess;
331}
332
333bool RSCompilerDriver::build(BCCContext &pContext,
334                             const char *pCacheDir,
335                             const char *pResName,
336                             const char *pBitcode,
337                             size_t pBitcodeSize,
338                             const char *pRuntimePath,
339                             RSLinkRuntimeCallback pLinkRuntimeCallback,
340                             bool pDumpIR) {
341    //  android::StopWatch build_time("bcc: RSCompilerDriver::build time");
342  //===--------------------------------------------------------------------===//
343  // Check parameters.
344  //===--------------------------------------------------------------------===//
345  if ((pCacheDir == NULL) || (pResName == NULL)) {
346    ALOGE("Invalid parameter passed to RSCompilerDriver::build()! (cache dir: "
347          "%s, resource name: %s)", ((pCacheDir) ? pCacheDir : "(null)"),
348                                    ((pResName) ? pResName : "(null)"));
349    return false;
350  }
351
352  if ((pBitcode == NULL) || (pBitcodeSize <= 0)) {
353    ALOGE("No bitcode supplied! (bitcode: %p, size of bitcode: %u)",
354          pBitcode, static_cast<unsigned>(pBitcodeSize));
355    return false;
356  }
357
358  //===--------------------------------------------------------------------===//
359  // Prepare dependency information.
360  //===--------------------------------------------------------------------===//
361  RSInfo::DependencyTableTy dep_info;
362  uint8_t bitcode_sha1[20];
363  Sha1Util::GetSHA1DigestFromBuffer(bitcode_sha1, pBitcode, pBitcodeSize);
364
365  //===--------------------------------------------------------------------===//
366  // Construct output path.
367  // {pCacheDir}/{pResName}.o
368  //===--------------------------------------------------------------------===//
369  llvm::SmallString<80> output_path(pCacheDir);
370  llvm::sys::path::append(output_path, pResName);
371  llvm::sys::path::replace_extension(output_path, ".o");
372
373  dep_info.push(std::make_pair(output_path.c_str(), bitcode_sha1));
374
375  //===--------------------------------------------------------------------===//
376  // Load the bitcode and create script.
377  //===--------------------------------------------------------------------===//
378  Source *source = Source::CreateFromBuffer(pContext, pResName,
379                                            pBitcode, pBitcodeSize);
380  if (source == NULL) {
381    return false;
382  }
383
384  RSScript *script = new (std::nothrow) RSScript(*source);
385  if (script == NULL) {
386    ALOGE("Out of memory when create Script object for '%s'! (output: %s)",
387          pResName, output_path.c_str());
388    delete source;
389    return false;
390  }
391
392  script->setLinkRuntimeCallback(pLinkRuntimeCallback);
393
394  // Read information from bitcode wrapper.
395  bcinfo::BitcodeWrapper wrapper(pBitcode, pBitcodeSize);
396  script->setCompilerVersion(wrapper.getCompilerVersion());
397  script->setOptimizationLevel(static_cast<RSScript::OptimizationLevel>(
398                                   wrapper.getOptimizationLevel()));
399
400  //===--------------------------------------------------------------------===//
401  // Compile the script
402  //===--------------------------------------------------------------------===//
403  Compiler::ErrorCode status = compileScript(*script, pResName,
404                                             output_path.c_str(),
405                                             pRuntimePath, dep_info, false,
406                                             pDumpIR);
407
408  // Script is no longer used. Free it to get more memory.
409  delete script;
410
411  if (status != Compiler::kSuccess) {
412    return false;
413  }
414
415  return true;
416}
417
418
419bool RSCompilerDriver::build(RSScript &pScript, const char *pOut,
420                             const char *pRuntimePath) {
421  RSInfo::DependencyTableTy dep_info;
422  RSInfo *info = RSInfo::ExtractFromSource(pScript.getSource(), dep_info);
423  if (info == NULL) {
424    return false;
425  }
426  pScript.setInfo(info);
427
428  // Embed the info string directly in the ELF, since this path is for an
429  // offline (host) compilation.
430  pScript.setEmbedInfo(true);
431
432  Compiler::ErrorCode status = compileScript(pScript, pOut, pOut, pRuntimePath,
433                                             dep_info, true);
434  if (status != Compiler::kSuccess) {
435    return false;
436  }
437
438  return true;
439}
440
441