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Add a check to make sure schedulePass() has not deleted stale RequiredPass.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139642 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2011-09-13 21:13:29 +00:00
parent fe731214d2
commit c67d184a2b
1 changed files with 5 additions and 3 deletions
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8
lib/VMCore/PassManager.cpp
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@ -1634,9 +1634,11 @@ void MPPassManager::addLowerLevelRequiredPass(Pass *P, Pass *RequiredPass) {
FPP->add(RequiredPass);
// Register P as the last user of RequiredPass.
SmallVector<Pass *, 1> LU;
LU.push_back(RequiredPass);
FPP->setLastUser(LU, P);
if (RequiredPass) {
SmallVector<Pass *, 1> LU;
LU.push_back(RequiredPass);
FPP->setLastUser(LU, P);
}
}
/// Return function pass corresponding to PassInfo PI, that is