Partial revert of the float conversion refactor in #192 #198
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PR to make updating compiler-builtins for newer rustc possible again (cc #197). I don't really know what #197 is about yet, so I want to un-block updates of compiler-builtins by reverting the conversion implementation to its older macro form. The other changes of #192 are left, even the changes to
mod.rs
done by the two partially reverted commits.I've tested the changes of this PR with a local build of rustc and it can't reproduce #197. However, it does not close the issue, as optimally we'd have the code back in master again.
r? @alexcrichton