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Improve core::ptr::drop_in_place debuginfo #79968

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merged 2 commits into from
Jan 10, 2021

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@bjorn3 bjorn3 commented Dec 12, 2020

  • Use span of the dropped type as function span when possible.
  • Rename symbol from core::ptr::drop_in_place::$hash to {{drop}}::<$TYPE>::$hash.

Fixes #77465

(I haven't yet updated the tests)

@bjorn3 bjorn3 added A-debuginfo Area: Debugging information in compiled programs (DWARF, PDB, etc.) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Dec 12, 2020
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r? @matthewjasper

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Dec 12, 2020
@bjorn3 bjorn3 force-pushed the better_drop_glue_debuginfo branch 4 times, most recently from d4e05fb to 287b37e Compare December 12, 2020 17:22
@bjorn3 bjorn3 force-pushed the better_drop_glue_debuginfo branch 4 times, most recently from 6b9a634 to b51f539 Compare December 12, 2020 18:31
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@bors r+

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bors commented Jan 9, 2021

📌 Commit 4a48d68 has been approved by matthewjasper

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 9, 2021
JohnTitor added a commit to JohnTitor/rust that referenced this pull request Jan 10, 2021
…r=matthewjasper

Improve core::ptr::drop_in_place debuginfo

* Use span of the dropped type as function span when possible.
* Rename symbol from `core::ptr::drop_in_place::$hash` to `{{drop}}::<$TYPE>::$hash`.

Fixes rust-lang#77465

(I haven't yet updated the tests)
This was referenced Jan 10, 2021
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 10, 2021
Rollup of 9 pull requests

Successful merges:

 - rust-lang#79502 (Implement From<char> for u64 and u128.)
 - rust-lang#79968 (Improve core::ptr::drop_in_place debuginfo)
 - rust-lang#80774 (Fix safety comment)
 - rust-lang#80801 (Use correct span for structured suggestion)
 - rust-lang#80803 (Remove useless `fill_in` function)
 - rust-lang#80820 (Support `download-ci-llvm` on NixOS)
 - rust-lang#80825 (Remove under-used ImplPolarity enum)
 - rust-lang#80850 (Allow #[rustc_builtin_macro = "name"])
 - rust-lang#80857 (Add comment to `Vec::truncate` explaining `>` vs `>=`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit f90c7f0 into rust-lang:master Jan 10, 2021
@rustbot rustbot added this to the 1.51.0 milestone Jan 10, 2021
@bjorn3 bjorn3 deleted the better_drop_glue_debuginfo branch January 10, 2021 10:54
rylev added a commit to rylev/rust that referenced this pull request Jan 12, 2021
…uginfo, r=matthewjasper"

This reverts commit f90c7f0, reversing
changes made to 5c0f5b6.
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rylev commented Jan 14, 2021

This PR introduced a moderate performance regression which you can learn more about here #80947. We've decided that the regression is worth it in this case for the better debugging output.

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A-debuginfo Area: Debugging information in compiled programs (DWARF, PDB, etc.) S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Improve core::ptr::drop_in_place debuginfo
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