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MI-Sched cleanup. If an instruction has no valid sched class, do not attempt to check for a variant.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179451 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick 2013-04-13 06:07:45 +00:00
parent f521997303
commit 6a22dba485
1 changed files with 2 additions and 0 deletions
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lib/CodeGen/TargetSchedule.cpp
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@ -128,6 +128,8 @@ resolveSchedClass(const MachineInstr *MI) const {
// Get the definition's scheduling class descriptor from this machine model.
unsigned SchedClass = MI->getDesc().getSchedClass();
const MCSchedClassDesc *SCDesc = SchedModel.getSchedClassDesc(SchedClass);
if (!SCDesc->isValid())
return SCDesc;
#ifndef NDEBUG
unsigned NIter = 0;