yxsamliu wrote:

would it be more useful to allow swapping the output by environment variable 
and MD5 hash, e.g.

CLANG_LINK_WRAPPER_SWAP_OUTPUT=hash1:file1,hash2:file2

it calculates the MD5 hash of the output file, if matching, swap it with the 
specified file. This way, we can set an env var to swap any linker wrapper 
output in a normal build. 

https://github.com/llvm/llvm-project/pull/91984
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