[NFC] Transition GlobalObject alignment from MaybeAlign to Align
This is a follow up on https://reviews.llvm.org/D142459#4081179.
This first patch adds an overload to `GlobalObject::setAlignment` that accepts an `Align` type.
This already handles most of the calls.
This patch also converts a few call sites to the new type when this is safe.
Here is the list of the remaining call sites:
- [clang/lib/CodeGen/CodeGenModule.cpp:1688](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/clang/lib/CodeGen/CodeGenModule.cpp#L1688)
- [llvm/lib/AsmParser/LLParser.cpp:1309](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/AsmParser/LLParser.cpp#L1309)
- [llvm/lib/AsmParser/LLParser.cpp:6050](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/AsmParser/LLParser.cpp#L6050)
- [llvm/lib/Bitcode/Reader/BitcodeReader.cpp:3871](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Bitcode/Reader/BitcodeReader.cpp#L3871)
- [llvm/lib/Bitcode/Reader/BitcodeReader.cpp:4030](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Bitcode/Reader/BitcodeReader.cpp#L4030)
- [llvm/lib/IR/Core.cpp:2018](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/IR/Core.cpp#L2018)
- [llvm/lib/IR/Globals.cpp:141](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/IR/Globals.cpp#L141)
- [llvm/lib/Linker/IRMover.cpp:660](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Linker/IRMover.cpp#L660)
- [llvm/lib/Linker/LinkModules.cpp:361](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Linker/LinkModules.cpp#L361)
- [llvm/lib/Linker/LinkModules.cpp:362](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Linker/LinkModules.cpp#L362)
- [llvm/lib/Transforms/IPO/MergeFunctions.cpp:782](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Transforms/IPO/MergeFunctions.cpp#L782)
- [llvm/lib/Transforms/IPO/MergeFunctions.cpp:840](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Transforms/IPO/MergeFunctions.cpp#L840)
- [llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp:1813](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp#L1813)
- [llvm/tools/llvm-reduce/deltas/ReduceGlobalObjects.cpp:27](https://github.com/llvm/llvm-project/blob/
e195e6bad6706230a4b5fd4b5cc13de1f16f25cc/llvm/tools/llvm-reduce/deltas/ReduceGlobalObjects.cpp#L27)
Differential Revision: https://reviews.llvm.org/D142708