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Enable new pass manager with LLVM 13 #88243

Merged
merged 4 commits into from
Sep 25, 2021
Merged

Enable new pass manager with LLVM 13 #88243

merged 4 commits into from
Sep 25, 2021

Commits on Sep 25, 2021

  1. Enable new pass manager on LLVM 13 

    The new pass manager is enabled by default in clang since
Clang/LLVM 13. While the discussion about this is still ongoing
(https://lists.llvm.org/pipermail/llvm-dev/2021-August/152305.html)
it's expected that support for the legacy pass manager will be
dropped either in LLVM 14 or 15.

This switches us to use the new pass manager if LLVM >= 13 is used.
    @nikic
    nikic committed Sep 25, 2021
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  2. Use correct pipeline for LTO at O0 

    Unlike the pre-link piplines, the LTO pipelines do support O0,
and using them is required to avoid leaving behind undefined
references for the linker.
    @nikic
    nikic committed Sep 25, 2021
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  3. Make expectation in panic-in-drop-abort.rs test more precise 

    Check whether a call/invoke of the function exists, but don't
match a leftover function declaration.

Also remove the CHECK-LABELs: In panic-in-drop=unwind mode the
call will not actually be in either of those functions, so
remove the restriction and look for any calls.
    @nikic
    nikic committed Sep 25, 2021
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  4. Pin panic-in-drop=abort test to old pass manager

    @nikic
    nikic committed Sep 25, 2021
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