llvm-project

66d6964a - Fix tests failing on fuchsia clang x86_64 builders (#144655)

Fix tests failing on fuchsia clang x86_64 builders (#144655) Fuchsia sets CLANG_DEFAULT_UNWINDLIB to libunwind. As a result, when rtlib is set to libgcc and unwindlib is not explicitly specified, tests using Fuchsia as the default platform will fail. To address this, the affected tests are now xfailed This change fixes the following tests introduced in https://github.com/llvm/llvm-project/commit/45ea46c44636094e9fcdbbeabfd11f9d0fad5e38: clang/test/Driver/aarch64-toolchain-extra.c clang/test/Driver/arm-toolchain-extra.c clang/test/Driver/aarch64-toolchain.c clang/test/Driver/arm-toolchain.c