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Add checks to ensure that there are no unreachable blocks in the function

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14725 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-09 16:44:37 +00:00
parent 8ca2dc0710
commit 9fb6cf1d82
1 changed files with 8 additions and 0 deletions
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8
lib/CodeGen/LiveVariables.cpp
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@ -291,6 +291,14 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &MF) {
i + MRegisterInfo::FirstVirtualRegister));
}
// Check to make sure there are no unreachable blocks in the MC CFG for the
// function. If so, it is due to a bug in the instruction selector or some
// other part of the code generator if this happens.
#ifndef NDEBUG
for(MachineFunction::iterator i = MF.begin(), e = MF.end(); i != e; ++i)
assert(Visited.count(&*i) != 0 && "unreachable basic block found");
#endif
return false;
}