[compiler-rt][builtins] Cannot compile for loongarch64 for baremetal builtins

[trcrsired]

-- LLVM_MAIN_SRC_DIR: "/home/cqwrteur/toolchains_build/llvm-project/llvm"
CMake Error at /home/cqwrteur/toolchains_build/llvm-project/compiler-rt/cmake/Modules/CompilerRTUtils.cmake:144 (message):
Cannot compile for loongarch64:

Call Stack (most recent call first):
/home/cqwrteur/toolchains_build/llvm-project/compiler-rt/cmake/base-config-ix.cmake:224 (test_target_arch)
/home/cqwrteur/toolchains_build/llvm-project/compiler-rt/cmake/builtin-config-ix.cmake:247 (test_targets)
CMakeLists.txt:60 (include)

-- Configuring incomplete, errors occurred!
ninja: error: loading 'build.ninja': No such file or directory
ninja: error: loading 'build.ninja': No such file or directory
cp: cannot stat '/home/cqwrteur/toolchains/llvm/loongarch64-linux-musl/builtins/*': No such file or directory

[trcrsired]

https://github.com/trcrsired/toolchainbuildscripts/blob/main/llvm/loongarch64-linux-musl.sh

Script is here