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Implement support for bugpoint to identify which FUNCTION an optimization

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is miscompiling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5893 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-04-24 17:02:17 +00:00
parent 7899b74fdb
commit 640f22e66d
6 changed files with 412 additions and 88 deletions
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32
tools/bugpoint/CrashDebugger.cpp
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@ -11,6 +11,23 @@
#include "llvm/Pass.h"
#include <fstream>
#if 0
class DebugCrashes : public ListReducer<const PassInfo*> {
BugDriver &BD;
public:
DebugCrashes(BugDriver &bd) : BD(bd) {}
// doTest - Return true iff running the "removed" passes succeeds, and running
// the "Kept" passes fail when run on the output of the "removed" passes. If
// we return true, we update the current module of bugpoint.
//
virtual bool doTest(const std::vector<ElTy> &Removed,
const std::vector<ElTy> &Kept) {
return BD.runPasses(Kept);
}
};
#endif
/// debugCrash - This method is called when some pass crashes on input. It
/// attempts to prune down the testcase to something reasonable, and figure
/// out exactly which pass is crashing.
@ -18,7 +35,11 @@
bool BugDriver::debugCrash() {
std::cout << "\n*** Debugging optimizer crash!\n";
// Determine which pass causes the optimizer to crash... using binary search
#if 0
// Reduce the list of passes which causes the optimizer to crash...
DebugCrashes(*this).reduceList(PassesToRun);
#endif
unsigned LastToPass = 0, LastToCrash = PassesToRun.size();
while (LastToPass != LastToCrash) {
unsigned Mid = (LastToCrash+LastToPass+1) / 2;
@ -65,6 +86,9 @@ bool BugDriver::debugCrash() {
removeFile(Filename);
}
PassesToRun.clear();
PassesToRun.push_back(CrashingPass);
return debugPassCrash(CrashingPass);
}
@ -83,7 +107,7 @@ static unsigned CountFunctions(Module *M) {
/// crashes, but it smaller.
///
bool BugDriver::debugPassCrash(const PassInfo *Pass) {
EmitProgressBytecode(Pass, "passinput");
EmitProgressBytecode("passinput");
bool Reduced = false, AnyReduction = false;
if (CountFunctions(Program) > 1) {
@ -124,7 +148,7 @@ bool BugDriver::debugPassCrash(const PassInfo *Pass) {
}
if (Reduced) {
EmitProgressBytecode(Pass, "reduced-function");
EmitProgressBytecode("reduced-function");
Reduced = false;
}
@ -196,7 +220,7 @@ bool BugDriver::debugPassCrash(const PassInfo *Pass) {
}
if (Reduced) {
EmitProgressBytecode(Pass, "reduced-simplified");
EmitProgressBytecode("reduced-simplified");
Reduced = false;
}