Also share drop-glue when compiling with -Zshare-generics (i.e. at opt-level=0) #68414
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Also share drop-glue when compiling with -Zshare-generics (i.e. at opt-level=0) This PR adds drop-glue to the set of monomorphizations that can be shared across crates via `-Zshare-generics`. This version of the PR might have detrimental effects on performance as it makes lots of stuff dependent on a single query results (`upstream_monomorphizations_for(def_id_of_drop_in_place)`). That should be fixable but let's do a perf run first. Potentially fixes issue #64140. (cc @alexcrichton) The changes here are related to @matthewjasper's #67332 but should be mostly orthogonal. r? @ghost
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☀️ Try build successful - checks-azure |
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Queued e9acaef with parent ce361fb, future comparison URL. |
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Finished benchmarking try commit e9acaef, comparison URL. |
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Hard to get a better try run than that :) r=me on the code here too |
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Hm, I find the results a bit underwhelming actually. Let's see if having a separate query drop-glue improves things. If not, merging this simpler version is good too. There's some nice cleanup/documentation in there. |
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@bors try @rust-timer queue This adds another query layer for drop-glue so we get better granularity (an approach that could be trivially extend to similar cases like Unfortunately I also found a bug. Running UI tests with |
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Also share drop-glue when compiling with -Zshare-generics (i.e. at opt-level=0) This PR adds drop-glue to the set of monomorphizations that can be shared across crates via `-Zshare-generics`. This version of the PR might have detrimental effects on performance as it makes lots of stuff dependent on a single query results (`upstream_monomorphizations_for(def_id_of_drop_in_place)`). That should be fixable but let's do a perf run first. Potentially fixes issue #64140. (cc @alexcrichton) The changes here are related to @matthewjasper's #67332 but should be mostly orthogonal. r? @ghost
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The job Click to expand the log.I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact |
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☀️ Try build successful - checks-azure |
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Queued d9ce420 with parent 2f688ac, future comparison URL. |
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Alright, I found the bug. Turns out |
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Finished benchmarking try commit d9ce420, comparison URL. |
used outside of the LLVM backend.
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This is ready for an actual review. |
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r? @alexcrichton ( |
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This reduces the amount of invalidated data when new types are add to upstream crates.
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@bors r=alexcrichton Thanks for the review! |
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📌 Commit 197cc1e has been approved by |
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Also share drop-glue when compiling with -Zshare-generics (i.e. at opt-level=0) This PR adds drop-glue to the set of monomorphizations that can be shared across crates via `-Zshare-generics`. This version of the PR might have detrimental effects on performance as it makes lots of stuff dependent on a single query results (`upstream_monomorphizations_for(def_id_of_drop_in_place)`). That should be fixable but let's do a perf run first. Potentially fixes issue #64140. (cc @alexcrichton) The changes here are related to @matthewjasper's #67332 but should be mostly orthogonal. r? @ghost
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☀️ Test successful - checks-azure |
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This PR adds drop-glue to the set of monomorphizations that can be shared across crates via
-Zshare-generics.This version of the PR might have detrimental effects on performance as it makes lots of stuff dependent on a single query results (
upstream_monomorphizations_for(def_id_of_drop_in_place)). That should be fixable but let's do a perf run first.Potentially fixes issue #64140. (cc @alexcrichton)
The changes here are related to @matthewjasper's #67332 but should be mostly orthogonal.
r? @ghost