[llvm] Use std::nullopt instead of None in comments (NFC)
authorKazu Hirata <kazu@google.com>
Fri, 9 Dec 2022 07:21:59 +0000 (23:21 -0800)
committerKazu Hirata <kazu@google.com>
Fri, 9 Dec 2022 07:22:00 +0000 (23:22 -0800)
commit8a7cbea525ceb4bd67e8fe097bf071c449a8e525
tree721986e7008d3f68e4ea87bc4d7e979c06b93e8c
parent9c381c430e413b2c2b7a15e43f4db3f4b7a7e138
[llvm] Use std::nullopt instead of None in comments (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
19 files changed:
llvm/include/llvm/Analysis/InlineCost.h
llvm/include/llvm/Analysis/LoopCacheAnalysis.h
llvm/include/llvm/Analysis/LoopInfo.h
llvm/include/llvm/Analysis/ScalarEvolution.h
llvm/include/llvm/BinaryFormat/Dwarf.h
llvm/include/llvm/IR/GlobalValue.h
llvm/include/llvm/IR/Instructions.h
llvm/include/llvm/Support/CheckedArithmetic.h
llvm/include/llvm/Support/Threading.h
llvm/include/llvm/Transforms/IPO/Attributor.h
llvm/include/llvm/Transforms/Utils/LoopUtils.h
llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
llvm/lib/Target/AMDGPU/AMDGPUMachineModuleInfo.h
llvm/lib/Target/AMDGPU/SIMemoryLegalizer.cpp
llvm/lib/Target/SPIRV/SPIRVBuiltins.h
llvm/lib/Transforms/Scalar/GVNSink.cpp
llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp