This is still crashing on AIX and Solaris. It looks like maybe issues
due to trying to delete the current working directory. cd to the source
directory beforehand to try and work around that.
This patch removes %T from clang lit tests. %T has been deprecated for
about seven years and is not reccomended as it is not unique to each
test, which can lead to races. This patch is intended to remove usage in
tree with the end goal of removing support for %T within lit.
On some systems, the second `split-file` command will fail because the current
directory is the one we have deleted, we switch to another directory
before running it.
Previously, if a header was found via in a header map, and not just remapped.
we wouldn't also find the module it maps to when using implicit modules (for
module maps that were explicitly loaded).
This diff just updates these code paths to also locate the owning module via
`findUsableModuleForHeader`.
Reviewed By: benlangmuir
Differential Revision: https://reviews.llvm.org/D103930
