[PATCH] D71627: [Clang FE, SystemZ] Recognize -mrecord-mcount CL option.
Nick Desaulniers via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Dec 20 09:40:04 PST 2019
nickdesaulniers added a comment.
This is regressing linux kernel builds for multiple architectures. The linux kernel uses feature detection for compiler flags, basically invoking:
$ clang -mrecord-mcount -target aarch64-linux-gnu -c -x c /dev/null
Because the target info isn't validated until code gen, the above returns `0`, which seems like the flag is supported, so it is used for further compilations which then do fail.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D71627/new/
https://reviews.llvm.org/D71627
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