D18551: clang: Create preamble only on second parse

[Aaron Puchert]

aaronpuchert added a comment.


  In D18551#402186 <https://phabricator.kde.org/D18551#402186>, @brauch wrote:
  
  > To clarify, the patch back then was less about the first-time delay, and more about the delay being there *every* time because of wrong usage of the API. Whether the delay occurs once is arguably a bit less important.
  
  
  That's good to hear, reading your commit message made me think that preventing the delay of the first reparse was not the goal of these changes.

REPOSITORY
  R32 KDevelop

REVISION DETAIL
  https://phabricator.kde.org/D18551

To: aaronpuchert, #kdevelop, mwolff, brauch, rjvbb
Cc: rjvbb, kdevelop-devel, glebaccon, hase, antismap, iodelay, geetamc, Pilzschaf, akshaydeo, surgenight, arrowd
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