[clangd] Correct setting ignoreWarnings in CodeCompletion.
We should set the flag before creating ComplierInstance -- when
CopmilerInstance gets initialized, it also initializes the DiagnosticsEngine
using the DiagnosticOptions.
This was hidden deeply -- as clang suppresses all diagnostics when we
hit the code-completion (but internally it does do unnecessary analysis stuff).
As a bonus point, this fix will optmize the completion speed -- clang won't do
any analysis (e.g. -Wunreachable-code, -Wthread-safety-analysisi) at all internally.
Reviewed By: ilya-biryukov
Subscribers: klimek, jkorous-apple, ioeric, cfe-commits
Differential Revision: https://reviews.llvm.org/D43569
git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@325779 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed