Allow a ToolChain to compute the path of a compiler-rt's component.
Summary:
This patch moves getCompilerRT() from the clang::driver::tools namespace to
the ToolChain class. This is needed for multilib toolchains that need to
place their libraries in Clang's resource directory with a layout that is
different from the default one.
Reviewers: atanasyan, rsmith
Subscribers: tberghammer, danalbert, srhines, cfe-commits
Differential Revision: http://reviews.llvm.org/D13339
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@249030
91177308-0d34-0410-b5e6-
96231b3b80d8