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[beta] Rollup backports #58537
[beta] Rollup backports #58537
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@bors r+ p=10 |
📌 Commit 110b7618ba4e6ad8ef6837e8ccabbbcc2eeb7b5a has been approved by |
@pietroalbini would it be possible to include #58522? |
@bors r-
Sure! |
Currently it just unconditionally allocates it in the arena. For a "Clean Check" build of the the `packed-simd` benchmark, this change reduces both the `max-rss` and `faults` counts by 59%; it slightly (~3%) increases the instruction counts but the `wall-time` is unchanged. For the same builds of a few other benchmarks, `max-rss` and `faults` drop by 1--5%, but instruction counts and `wall-time` changes are in the noise. Fixes rust-lang#57432, fixes rust-lang#57829.
This commit fixes a bug introduced by rust-lang#55937 which started checking user type annotations for associated type patterns. Where lowering a associated constant expression would previously return a `PatternKind::Constant`, it now returns a `PatternKind::AscribeUserType` with a `PatternKind::Constant` inside, this commit unwraps that to access the constant pattern inside and behaves as before.
In particular, the table entries (associated with type-variables created during the probe) must persist as long as the candidates assembled during the probe. If you make a nested probe without creating a nested `ProbeContext`, the table entries are popped at the end of the nested probe, while the type-variables would leak out via the assembled candidates attached to `self` (the outer `ProbeContext`). This causes an ICE (*if you are lucky*)!
These aren't fixed by this PR, but were broken in a few older attempts at it. Make sure they don't regress.
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@bors r+ p=10 |
📌 Commit bbe9e21 has been approved by |
[beta] Rollup backports Cherry-picked: * #58207: Make `intern_lazy_const` actually intern its argument. * #58161: Lower constant patterns with ascribed types. * #57908: resolve: Fix span arithmetics in the import conflict error * #57835: typeck: remove leaky nested probe during trait object method resolution * #57885: Avoid committing to autoderef in object method probing * #57646: Fixes text becoming invisible when element targetted Rolled up: * #58522: [BETA] Update cargo r? @ghost
💔 Test failed - checks-travis |
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📌 Commit bbe9e21 has been approved by |
@bors p=267 |
⌛ Testing commit bbe9e21 with merge 7dfb87496900988535015ce554a3890857359428... |
💔 Test failed - checks-travis |
Your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem. Click to expand the log.
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@bors retry |
⌛ Testing commit bbe9e21 with merge 642cc3c831d46bcec74982acce4b9b68500236f1... |
💔 Test failed - checks-travis |
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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 |
@bors retry |
[beta] Rollup backports Cherry-picked: * #58207: Make `intern_lazy_const` actually intern its argument. * #58161: Lower constant patterns with ascribed types. * #57908: resolve: Fix span arithmetics in the import conflict error * #57835: typeck: remove leaky nested probe during trait object method resolution * #57885: Avoid committing to autoderef in object method probing * #57646: Fixes text becoming invisible when element targetted Rolled up: * #58522: [BETA] Update cargo r? @ghost
☀️ Test successful - checks-travis, status-appveyor |
Cherry-picked:
intern_lazy_const
actually intern its argument. #58207: Makeintern_lazy_const
actually intern its argument.Rolled up:
r? @ghost