[PATCH] D155018: [Support] Move StringExtras.h include from Error.h to Error.cpp (part 5)

[Elliot Goodrich via Phabricator via llvm-commits]

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**1st commit**
[lldb] Add missing StringExtras.h includes

In preparation for removing the `#include "llvm/ADT/StringExtras.h"`
from the header to source file of `llvm/Support/Error.h`, first add in
all the missing includes that were previously included transitively
through this header.

This is fixing all files missed in b0abd4893fa1 <https://reviews.llvm.org/rGb0abd4893fa1bfae7f71b6b6e98770c9b1c07620>, 39d8e6e22cd1 <https://reviews.llvm.org/rG39d8e6e22cd192db6ace37a4c842265058dcddb8>,
a11efd49266f <https://reviews.llvm.org/rGa11efd49266f6cf2a98bdf52428b0c9423158846>, and 5551657b310b <https://reviews.llvm.org/rG5551657b310b0f5f97b26288f87bc41a8050bf93>.

---

**2nd commit**
[Support] Move StringExtras.h include from Error.h to Error.cpp

Move the implementation of the `toString` function from
`llvm/Support/Error.h` to the source file, which allows us to move
`#include "llvm/ADT/StringExtras.h"` to the source file as well.

As `Error.h` is present in a large number of translation units this
means we are unnecessarily bringing in the contents of
`StringExtras.h` - itself a large file with lots of includes - and
slowing down compilation.

Also move the `#include "llvm/ADT/SmallVector.h"` directive to the
source file as it's no longer needed, but this does not give as much of
a benefit.

This reduces the total number of preprocessing tokens across the LLVM
source files in lib from (roughly) 1,920,413,050 to 1,903,629,230 - a
reduction of ~0.87%. This should result in a small improvement in
compilation time.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D155018

Files:
  lldb/tools/lldb-vscode/VSCode.cpp
  llvm/include/llvm/Support/Error.h
  llvm/lib/Support/Error.cpp

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