Unrevert "Remove checked_add in Layout::repeat"
#69544
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JohnTitor
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Given that we also have the tests in-tree that make sure we don't regress, this seems good. @bors r+ |
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📌 Commit 1b0bb35 has been approved by |
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Thanks for that! I was offline for a bit, thanks for taking care of everything. A bit sad my patch missed the mark |
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Rollup of 6 pull requests Successful merges: - #68682 (Add documentation to compiler intrinsics) - #69544 (Unrevert "Remove `checked_add` in `Layout::repeat`") - #69617 (constify mem::forget) - #69622 (Rename `syntax` in librustc_ast/README.md) - #69623 (stash API: remove panic to fix ICE.) - #69624 (Toolstate: Don't block beta week on already broken tools.) Failed merges: - #69626 (Toolstate: don't duplicate nightly tool list.) r? @ghost
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Mar 10, 2020
Rerevert "Remove checked_add in Layout::repeat" This change, which originated in #67174 and was reapplied in #69544, seems to have caused a noticeable slowdown in patched/clean incremental builds (see #69710). Revert it for now while we investigate the underlying issue. r? @nnethercote
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This reapplies @kraai's original
libcore::alloc::Layout::repeatchange from #67174 which was temporarily reverted in #69241. Now that the proper LLVM fix has been cherry-picked, we can unrevert the revert.This change was originally reviewed by @hanna-kruppe on the initial PR.
cc @RalfJung