New libclang API: clang_suspendTranslationUnit to reduce memory footprint

[Kevin Funk]

Heya,

Just as a personal note and for future reference: There's new libclang API we 
can potentially use to save some memory, introduced by our friends from 
TheQtCompany:
  https://www.mail-archive.com/cfe-commits@lists.llvm.org/msg58408.html

Worth having a look at it once we find the time. 

This is the commit message of the patch I'm referring to:

commit 91321d9884b7ce357cac1d128244d22dbe2a0cc7
Author: Erik Verbruggen <erikjv at me.com>
Date:   Tue May 30 14:25:54 2017 +0000

    [libclang] Allow to suspend a translation unit.
    
    A suspended translation unit uses significantly less memory but on the
    other side does not support any other calls than
    clang_reparseTranslationUnit to resume it or
    clang_disposeTranslationUnit to dispose it completely.
    
    This helps IDEs to reduce the memory footprint. The data that is freed
    by a call to clang_suspendTranslationUnit will be re-generated on the
    next (re)parse anyway. Used with a preamble, this allows pretty fast
    resumption of the translation unit for further use (compared to disposal
    of the translation unit and a parse from scratch).
    
    Patch by Nikolai Kosjar!
    
    
    git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@304212 
91177308-0d34-0410-b5e6-96231b3b80d8

-- 
Kevin Funk | kfunk at kde.org | http://kfunk.org
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