stella.stamenova added a comment.

In D68980#1709967 <https://reviews.llvm.org/D68980#1709967>, @mstorsjo wrote:

> In D68980#1709931 <https://reviews.llvm.org/D68980#1709931>, @labath wrote:
>
> > In D68980#1709884 <https://reviews.llvm.org/D68980#1709884>, 
> > @stella.stamenova wrote:
> >
> > > The two things that come to mind are the path to clang-cl (which is 
> > > sometimes a clang build and sometimes installed on the system as part of 
> > > a VS installation or an LLVM installation) as well as the path to the 
> > > linker when it is needed. This is most often an issue in the case of a VS 
> > > install - I don't remember all the details any more, but I believe that 
> > > before Zach added the script, we were often picking up the wrong clang-cl 
> > > and ending up not being able to compile the tests at all.
> >
> >
> > Thanks.
> >
> > Was this during a standalone lldb build? In a non-standalone build, lit 
> > should definitely prefer the just-built clang/lld (and if it doesn't, it 
> > should be fixed to do that). The situation is more complicated for a 
> > standalone build because the clang binary is sort of out of our control. 
> > But, in this case, I don't see how having build.py around can help, because 
> > the information about which clang to use has to come externally anyway...
>
>
> How do tests like test/Shell/Register/x86*.test work in such standalone 
> builds then? They use lines like these:
>
>   # XFAIL: system-windows
>   # REQUIRES: native && target-x86_64
>   # RUN: %clangxx -fomit-frame-pointer %p/Inputs/x86-64-gp-read.cpp -o %t
>   # RUN: %lldb -b -s %s %t | FileCheck %s
>
>
> (The XFAIL for system-windows, at least in this test, when I tried it out, 
> seemed to relate to the fact that `register read --all` on windows didn't 
> include all the 32 bit subregisters.)
>
> If tests already can use such constrcuts, I don't see why we couldn't use `# 
> RUN: %clang_cl ..`, as lit sets up `%clang_cl` in the same way as `%clangxx`.


%clang_cl is where we started before we had build.py. It was over a year ago, 
so it's possible things have improved.


Repository:
  rLLDB LLDB

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68980/new/

https://reviews.llvm.org/D68980



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