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RegisterClassInfo::computePSetLimit - assert that we actually find a register. 

Fixes "pointer is null" clang static analyzer warning.
This commit is contained in:
Simon Pilgrim 2020-01-15 11:51:55 +00:00
parent 7b15865225
commit 0b64400e0b
1 changed files with 1 additions and 0 deletions
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llvm/lib/CodeGen/RegisterClassInfo.cpp
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@ -186,6 +186,7 @@ unsigned RegisterClassInfo::computePSetLimit(unsigned Idx) const {
NumRCUnits = NUnits;
}
}
assert(RC && "Failed to find register class");
compute(RC);
unsigned NReserved = RC->getNumRegs() - getNumAllocatableRegs(RC);
return TRI->getRegPressureSetLimit(*MF, Idx) -