compiler: Switch default code model for loongarch64 to medium.
LLVM 21 will change the default, but we're making the change now to make
building Zig for loongarch64 less painful.
https://github.com/llvm/llvm-project/pull/132173
f2f36c49c8Alex Rønne Petersen committed on 4/7/2025, 7:36:56 PMparent4995509