[SelectionDAG] Teach getRegistersForValue to return std::optional (NFC)
authorKazu Hirata <kazu@google.com>
Sat, 19 Nov 2022 23:00:19 +0000 (15:00 -0800)
committerKazu Hirata <kazu@google.com>
Sat, 19 Nov 2022 23:00:19 +0000 (15:00 -0800)
commit6ccf1d23d7a503e1b50a8acb5aa5403a311d3446
tree530345bf8737236efd91d4559c5a5cdcc0b182ba
parentd1163784b5029b4c21ed861d78881d907389b7b7
[SelectionDAG] Teach getRegistersForValue to return std::optional (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716/11
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp