aaron.ballman added a comment. In D151098#4360758 <https://reviews.llvm.org/D151098#4360758>, @jhuber6 wrote:
> In D151098#4360750 <https://reviews.llvm.org/D151098#4360750>, @aaron.ballman > wrote: > >> LGTM, though it's a bit jarring that `-march` suggests using `-mcpu=help` >> (should we ensure that `-march=help` works on all targets instead?) > > Using `-march=help` works inadvertently because it will list the targets when > given an invalid one. We could probably map the `-mcpu=help` handling to > `-march=help` but I'm not entirely sure what the semantics should be there. > The distinction between `-march` and `-mcpu` is still not entirely clear to > me, it's just a matter of whether or not the target decided to choose one or > the other. Oh, when I was trying it out, `-march=help` was not giving any useful information on some targets: https://godbolt.org/z/js4a64aTK -- FWIW, it's also unclear to me why and how these options differ. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D151098/new/ https://reviews.llvm.org/D151098 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
