
This reverts commit 9429b67b8e300e638d7828bbcb95585f85c4df4d. It broke the build on Windows, see comments on https://reviews.llvm.org/D130309 It also reverts these follow-ups: Revert "Fix buildbot breakage after https://reviews.llvm.org/D130309." This reverts commit f959d815f4637890ebbacca379f1c38ab47e4e14. Revert "Fix buildbot breakage after https://reviews.llvm.org/D130309." This reverts commit 0bbce7a4c2d2bff622bdadd4323f93f5d90e6d24. Revert "Cache the value for absolute path in FileSpec." This reverts commit dabe877248b85b34878e75d5510339325ee087d0.