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Allow the block extractor take to take a list of basic blocks to not extract

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from a file containing Function/BasicBlock pairings. This is not safe against
anonymous or abnormally-named Funcs or BBs.

Make bugpoint use this interface to pass the BBs list to the child bugpoint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44101 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2007-11-14 06:47:06 +00:00
parent 1b12d8855d
commit 6fa98b1320
5 changed files with 121 additions and 12 deletions
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tools/bugpoint/ExtractFunction.cpp
+47 -3
View File
@@ -27,7 +27,10 @@
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/System/Path.h"
#include "llvm/System/Signals.h"
#include <set>
#include <fstream>
#include <iostream>
using namespace llvm;
@@ -305,10 +308,51 @@ Module *llvm::SplitFunctionsOutOfModule(Module *M,
Module *BugDriver::ExtractMappedBlocksFromModule(const
std::vector<BasicBlock*> &BBs,
Module *M) {
char *ExtraArg = NULL;
sys::Path uniqueFilename("bugpoint-extractblocks");
std::string ErrMsg;
if (uniqueFilename.createTemporaryFileOnDisk(true, &ErrMsg)) {
std::cout << "*** Basic Block extraction failed!\n";
std::cerr << "Error creating temporary file: " << ErrMsg << "\n";
M = swapProgramIn(M);
EmitProgressBitcode("basicblockextractfail", true);
swapProgramIn(M);
return 0;
}
sys::RemoveFileOnSignal(uniqueFilename);
std::ofstream BlocksToNotExtractFile(uniqueFilename.c_str());
if (!BlocksToNotExtractFile) {
std::cout << "*** Basic Block extraction failed!\n";
std::cerr << "Error writing list of blocks to not extract: " << ErrMsg
<< "\n";
M = swapProgramIn(M);
EmitProgressBitcode("basicblockextractfail", true);
swapProgramIn(M);
return 0;
}
for (std::vector<BasicBlock*>::const_iterator I = BBs.begin(), E = BBs.end();
I != E; ++I) {
BasicBlock *BB = *I;
BlocksToNotExtractFile << BB->getParent()->getName() << " "
<< BB->getName() << "\n";
}
BlocksToNotExtractFile.close();
const char *uniqueFN = uniqueFilename.c_str();
ExtraArg = (char*)malloc(23 + strlen(uniqueFN));
strcat(strcpy(ExtraArg, "--extract-blocks-file="), uniqueFN);
std::vector<const PassInfo*> PI;
// FIXME: BBs is actually ignored. See http://llvm.org/PR1775
PI.push_back(getPI(createBlockExtractorPass(BBs)));
Module *Ret = runPassesOn(M, PI);
std::vector<BasicBlock *> EmptyBBs; // This parameter is ignored.
PI.push_back(getPI(createBlockExtractorPass(EmptyBBs)));
Module *Ret = runPassesOn(M, PI, false, 1, &ExtraArg);
if (uniqueFilename.exists())
uniqueFilename.eraseFromDisk(); // Free disk space
free(ExtraArg);
if (Ret == 0) {
std::cout << "*** Basic Block extraction failed, please report a bug!\n";
M = swapProgramIn(M);