[PATCH] D69327: [Clang][ThinLTO] Add a cache for compile phase output.

[Yuanfang Chen via Phabricator via cfe-commits]

ychen added a comment.

Sorry for the confusion @steven_wu. By `stable` I mean the probability that the `-fthin-link-bitcode` option is replaced with some other thinlink mechanism under the distributed build environment. Since at least for ccache, the compilation output caching depends on the semantics of options ("-o" is assumed to be compilation output). For the case of  `-fthin-link-bitcode`,  both `-Xclang -fthin-link-bitcode` and `-o` are the output. I'm not familiar with compiler cache tools, but having the caching depends on a cc1 option feels not right since it is not an option of any other compilers, so most caching tools don't recognize it.


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  https://reviews.llvm.org/D69327/new/

https://reviews.llvm.org/D69327