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RegisterPressure: Improve assert message

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llvm-svn: 251885
This commit is contained in:
Matthias Braun 2015-11-03 01:53:36 +00:00
parent 6a0bab40ee
commit 3795aef91e
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/RegisterPressure.cpp
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@ -862,7 +862,8 @@ getUpwardPressureDelta(const MachineInstr *MI, /*const*/ PressureDiff &PDiff,
unsigned MNew = MOld;
// Ignore DeadDefs here because they aren't captured by PressureChange.
unsigned PNew = POld + PDiffI->getUnitInc();
assert((PDiffI->getUnitInc() >= 0) == (PNew >= POld) && "PSet overflow");
assert((PDiffI->getUnitInc() >= 0) == (PNew >= POld)
&& "PSet overflow/underflow");
if (PNew > MOld)
MNew = PNew;
// Check if current pressure has exceeded the limit.