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Check to see if all blocks are extractible first.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13491 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-05-12 16:08:01 +00:00
parent d99e1d3afb
commit 68bee938e5
1 changed files with 19 additions and 8 deletions
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27
tools/bugpoint/Miscompilation.cpp
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@ -354,11 +354,15 @@ namespace {
bool ReduceMiscompiledBlocks::TestFuncs(const std::vector<BasicBlock*> &BBs) {
// Test to see if the function is misoptimized if we ONLY run it on the
// functions listed in Funcs.
std::cout << "Checking to see if the program is misoptimized when all but "
<< "these " << BBs.size() << " blocks are extracted: ";
for (unsigned i = 0, e = BBs.size() < 10 ? BBs.size() : 10; i != e; ++i)
std::cout << BBs[i]->getName() << " ";
if (BBs.size() > 10) std::cout << "...";
std::cout << "Checking to see if the program is misoptimized when all ";
if (!BBs.empty()) {
std::cout << "but these " << BBs.size() << " blocks are extracted: ";
for (unsigned i = 0, e = BBs.size() < 10 ? BBs.size() : 10; i != e; ++i)
std::cout << BBs[i]->getName() << " ";
if (BBs.size() > 10) std::cout << "...";
} else {
std::cout << "blocks are extracted.";
}
std::cout << "\n";
// Split the module into the two halves of the program we want.
@ -399,9 +403,16 @@ static bool ExtractBlocks(BugDriver &BD,
// obscuring the bug. The Blocks list will end up containing blocks that must
// be retained from the original program.
unsigned OldSize = Blocks.size();
ReduceMiscompiledBlocks(BD, TestFn, MiscompiledFunctions).reduceList(Blocks);
if (Blocks.size() == OldSize)
return false;
// Check to see if all blocks are extractible first.
if (ReduceMiscompiledBlocks(BD, TestFn,
MiscompiledFunctions).TestFuncs(std::vector<BasicBlock*>())) {
Blocks.clear();
} else {
ReduceMiscompiledBlocks(BD, TestFn,MiscompiledFunctions).reduceList(Blocks);
if (Blocks.size() == OldSize)
return false;
}
Module *ProgClone = CloneModule(BD.getProgram());
Module *ToExtract = SplitFunctionsOutOfModule(ProgClone,