tree b160dc766bfe7da17b9ff272e8ea7e8af5ee85eb
parent 6975c5acb860243efdcb5a156e004ddbbc786a15
author Adrian Prantl <aprantl@apple.com> 1486670046 -0800
committer Adrian Prantl <aprantl@apple.com> 1486678755 -0800

Canonicalize the path provided by -fmodules-cache-path.

This fixes lookup mismatches that could happen when the module cache
path contained a '/./' component.

<rdar://problem/30413458>

(cherry picked from commit 163af79a32d923bbc7da4c5baeec67ebf196a4a6)