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Add an assertion to the ScheduleDAGInstrs class to catch SUnits

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reallocations. We don't do cloning on MachineInstr schedule DAGs,
but this is a worthwhile sanity check regardless.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61343 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-12-22 21:08:08 +00:00
parent fb8a1356b2
commit 361c31da5e
1 changed files with 4 additions and 0 deletions
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4
include/llvm/CodeGen/ScheduleDAGInstrs.h
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@ -36,7 +36,11 @@ namespace llvm {
/// NewSUnit - Creates a new SUnit and return a ptr to it. /// NewSUnit - Creates a new SUnit and return a ptr to it.
/// ///
SUnit *NewSUnit(MachineInstr *MI) { SUnit *NewSUnit(MachineInstr *MI) {
#ifndef NDEBUG
const SUnit *Addr = &SUnits[0];
#endif
SUnits.push_back(SUnit(MI, (unsigned)SUnits.size())); SUnits.push_back(SUnit(MI, (unsigned)SUnits.size()));
assert(Addr == &SUnits[0] && "SUnits std::vector reallocated on the fly!");
SUnits.back().OrigNode = &SUnits.back(); SUnits.back().OrigNode = &SUnits.back();
return &SUnits.back(); return &SUnits.back();
} }