swift

2ee8fe48 - [5.3][build] properly install compiler-rt from Xcode toolchain (#34236)

[5.3][build] properly install compiler-rt from Xcode toolchain (#34236) Similarly to what was done for #25547, copy the compiler-rt built-ins for embedded platforms from the Xcode toolchain into the new generated one, so to avoid link time errors. Addresses SR-12001, rdar://57837918 Cherry-pick of #31247 -- this also brings in the improvements from #34049