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misched: allow NULL InstrItineraries.

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llvm-svn: 159599
This commit is contained in:
Andrew Trick 2012-07-02 21:55:12 +00:00
parent 4081d7f1e7
commit 8bd81116b5
1 changed files with 1 additions and 0 deletions
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lib/CodeGen/MachineScheduler.cpp
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@ -408,6 +408,7 @@ public:
/// getNumMicroOps - Return the number of issue slots required for this MI.
unsigned getNumMicroOps(MachineInstr *MI) const {
if (!InstrItins) return 1;
int UOps = InstrItins->getNumMicroOps(MI->getDesc().getSchedClass());
return (UOps >= 0) ? UOps : TII->getNumMicroOps(InstrItins, MI);
}