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Check to see if all blocks are extractible first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13491 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -354,11 +354,15 @@ namespace {
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bool ReduceMiscompiledBlocks::TestFuncs(const std::vector<BasicBlock*> &BBs) {
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// Test to see if the function is misoptimized if we ONLY run it on the
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// functions listed in Funcs.
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std::cout << "Checking to see if the program is misoptimized when all but "
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<< "these " << BBs.size() << " blocks are extracted: ";
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for (unsigned i = 0, e = BBs.size() < 10 ? BBs.size() : 10; i != e; ++i)
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std::cout << BBs[i]->getName() << " ";
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if (BBs.size() > 10) std::cout << "...";
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std::cout << "Checking to see if the program is misoptimized when all ";
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if (!BBs.empty()) {
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std::cout << "but these " << BBs.size() << " blocks are extracted: ";
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for (unsigned i = 0, e = BBs.size() < 10 ? BBs.size() : 10; i != e; ++i)
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std::cout << BBs[i]->getName() << " ";
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if (BBs.size() > 10) std::cout << "...";
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} else {
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std::cout << "blocks are extracted.";
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}
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std::cout << "\n";
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// Split the module into the two halves of the program we want.
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@ -399,9 +403,16 @@ static bool ExtractBlocks(BugDriver &BD,
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// obscuring the bug. The Blocks list will end up containing blocks that must
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// be retained from the original program.
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unsigned OldSize = Blocks.size();
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ReduceMiscompiledBlocks(BD, TestFn, MiscompiledFunctions).reduceList(Blocks);
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if (Blocks.size() == OldSize)
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return false;
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// Check to see if all blocks are extractible first.
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if (ReduceMiscompiledBlocks(BD, TestFn,
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MiscompiledFunctions).TestFuncs(std::vector<BasicBlock*>())) {
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Blocks.clear();
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} else {
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ReduceMiscompiledBlocks(BD, TestFn,MiscompiledFunctions).reduceList(Blocks);
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if (Blocks.size() == OldSize)
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return false;
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}
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Module *ProgClone = CloneModule(BD.getProgram());
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Module *ToExtract = SplitFunctionsOutOfModule(ProgClone,
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