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Commit f48e9827 authored by Duncan P. N. Exon Smith's avatar Duncan P. N. Exon Smith
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CodeGen: Push the ModuleSlotTracker through MachineOperands 

Push `ModuleSlotTracker` through `MachineOperand`s, dropping the time
for `llc -print-machineinstrs` on the testcase in PR23865 from ~13
seconds to ~9 seconds.  Now `SlotTracker::processFunctionMetadata()`
accounts for only 8% of the runtime, which seems reasonable.

llvm-svn: 240845
parent 810551a6
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