tree fae47860c54c03d99962e7c7d43ebfe0c4dcd52e
parent ee17066e710635a2aa5c5f470efa990ca6bfce88
author Bruno Cardoso Lopes <bruno.cardoso@gmail.com> 1489796778 +0000
committer Bruno Cardoso Lopes <bruno.cardoso@gmail.com> 1489801634 -0700

[Modules] In case of lock timeout, fallback and build module

Duncan's r298165 introduced the PCMCache mechanism, which guarantees
that locks aren't necessary anymore for correctness but only for
performance, by avoiding building it twice when possible.

Change the logic to avoid an error but actually build the module in case
the timeout happens. Instead of an error, still emit a remark for
debugging purposes.

rdar://problem/30297862

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@298175 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit a034154895369927407fd67c361eb86eef7316ba)

 Conflicts:
	include/clang/Basic/DiagnosticCommonKinds.td
	lib/Frontend/CompilerInstance.cpp