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Add -disable-global-remove option to bugpoint.
Sometimes when bugpointing a crash the bugpoint-reduced-simplified.bc reproduces a totally different bug than the original one ("GV doesn't have initializer"). Although its useful to report that bug too, I need a way to reduce the original bug, hence I introduced -disable-global-remove. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72361 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -37,6 +37,10 @@ namespace {
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KeepMain("keep-main",
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cl::desc("Force function reduction to keep main"),
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cl::init(false));
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cl::opt<bool>
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NoGlobalRM ("disable-global-remove",
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cl::desc("Do not remove global variables"),
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cl::init(false));
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}
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namespace llvm {
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@ -344,7 +348,8 @@ bool ReduceCrashingBlocks::TestBlocks(std::vector<const BasicBlock*> &BBs) {
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static bool DebugACrash(BugDriver &BD, bool (*TestFn)(BugDriver &, Module *)) {
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// See if we can get away with nuking some of the global variable initializers
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// in the program...
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if (BD.getProgram()->global_begin() != BD.getProgram()->global_end()) {
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if (!NoGlobalRM &&
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BD.getProgram()->global_begin() != BD.getProgram()->global_end()) {
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// Now try to reduce the number of global variable initializers in the
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// module to something small.
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Module *M = CloneModule(BD.getProgram());
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