Follow-up to https://github.com/llvm/llvm-project/pull/140884
Before: lld-link: error: Stream Error: The stream is too short to perform the requested operation. lld-link: error: failed to write PDB file ./unit_tests.exe.pdb After: lld-link: error: the public (2127832912 bytes) and global (2200532960 bytes) symbols are too large to fit in a PDB file; the maximum total is 4294967295 bytes. lld-link: error: failed to write PDB file ./unit_tests.exe.pdb
Now that llvm::support::endianness has been renamed to
llvm::endianness, we can use the shorter form. This patch replaces
support::endianness::{big,little,native} with
llvm::endianness::{big,little,native}.
This adds support for generating Chrome-tracing .json profile traces in the LLD COFF driver. Also add the necessary time scopes, so that the profile trace shows in great detail which tasks are executed. As an example, this is what we see when linking a Unreal Engine executable: 
Following recent changes switching from xxh64 to xxh32 for better hashing performance (e.g., D154813). I am not familiar with this use case, but this change will ensure that the lld executable doesn't need xxHash64 after wasm-ld migrates.
Use deduction guides instead of helper functions.
The only non-automatic changes have been:
1. ArrayRef(some_uint8_pointer, 0) needs to be changed into ArrayRef(some_uint8_pointer, (size_t)0) to avoid an ambiguous call with ArrayRef((uint8_t*), (uint8_t*))
2. CVSymbol sym(makeArrayRef(symStorage)); needed to be rewritten as CVSymbol sym{ArrayRef(symStorage)}; otherwise the compiler is confused and thinks we have a (bad) function prototype. There was a few similar situation across the codebase.
3. ADL doesn't seem to work the same for deduction-guides and functions, so at some point the llvm namespace must be explicitly stated.
4. The "reference mode" of makeArrayRef(ArrayRef<T> &) that acts as no-op is not supported (a constructor cannot achieve that).
Per reviewers' comment, some useless makeArrayRef have been removed in the process.
This is a follow-up to https://reviews.llvm.org/D140896 that introduced
the deduction guides.
Differential Revision: https://reviews.llvm.org/D140955
Patch created by running: rg -l parallelForEachN | xargs sed -i '' -c 's/parallelForEachN/parallelFor/' No behavior change. Differential Revision: https://reviews.llvm.org/D128140
accumulated preprocessed size: before: 1065515095 after: 1065629059 Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup Differential Revision: https://reviews.llvm.org/D120195
This is a mechanical change. This actually also renames the similarly named methods in the SmallString class, however these methods don't seem to be used outside of the llvm subproject, so this doesn't break building of the rest of the monorepo.