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107 Commits

Author SHA1 Message Date
Camille GILLOT
c48756cdbf Limit creation of tracked place directly. 2023-02-06 21:55:05 +00:00
Camille GILLOT
9a6c04f5d0 Handle discriminants in dataflow-const-prop. 2023-02-06 21:51:47 +00:00
Camille GILLOT
cd3649b2a5 Only exclude locals if the place is not indirect. 2023-02-06 21:51:45 +00:00
Camille GILLOT
0d59b8c997 Remove redundant test. 2023-02-06 21:29:02 +00:00
Camille GILLOT
8e05ab04e5 Run SROA to fixpoint. 2023-02-05 12:08:42 +00:00
Camille GILLOT
42c9514629 Simplify construction of replacement map. 2023-02-05 11:44:18 +00:00
Giacomo Pasini
68c1e2fd48 Treat Drop as a rmw operation 
Previously, a Drop terminator was considered a move in MIR.
This commit changes the behavior to only treat Drop as a mutable
access to the dropped place.

In order for this change to be correct, we need to guarantee that
  a) A dropped value won't be used again
  b) Places that appear in a drop won't be used again before a
     subsequent initialization.

We can ensure this to be correct at MIR construction because Drop
will only be emitted when a variable goes out of scope,
thus having:
  (a) as there is no way of reaching the old value. drop-elaboration
     will also remove any uninitialized drop.
  (b) as the place can't be named following the end of the scope.

However, the initialization status, previously tracked by moves,
should also be tied to the execution of a Drop, hence the
additional logic in the dataflow analyses.
 2023-01-30 00:20:40 +01:00
Bryan Garza
360db516cc Create stable metric to measure long computation in Const Eval 
This patch adds a `MirPass` that tracks the number of back-edges and
function calls in the CFG, adds a new MIR instruction to increment a
counter every time they are encountered during Const Eval, and emit a
warning if a configured limit is breached.
 2023-01-23 23:56:22 +00:00
nils
fd7a159710 Fix uninlined_format_args for some compiler crates 
Convert all the crates that have had their diagnostic migration
completed (except save_analysis because that will be deleted soon and
apfloat because of the licensing problem).
 2023-01-05 19:01:12 +01:00
Jeremy Stucki
3dde32ca97 rustc: Remove needless lifetimes 2022-12-20 22:10:40 +01:00
Rémy Rakic
8275d115fb Revert "Auto merge of #103880 - b-naber:field-ty-mir, r=lcnr" 
This reverts commit 03770f0e2b, reversing
changes made to 01ef4b21dc.
 2022-12-19 15:31:20 +00:00
bors
03770f0e2b Auto merge of #103880 - b-naber:field-ty-mir, r=lcnr 
Use non-ascribed type as field's type in mir

Fixes https://github.com/rust-lang/rust/issues/96514

r? `@lcnr`
 2022-12-16 12:47:49 +00:00
Rageking8
58110572fb fix dupe word typos 2022-12-05 16:42:36 +08:00
b-naber
9061ffba8c use no type in ProjectionElem::Field for PlaceBuilder::UpVar 2022-11-23 21:25:27 +01:00
Matthias Krüger
e3036df003 couple of clippy::perf fixes 2022-11-18 10:30:47 +01:00
Jannis Christopher Köhl
108790b8dc Remove log statement that was commented out 2022-11-12 20:32:09 +01:00
Jannis Christopher Köhl
2e034dc68c Exclude locals completely, instead of individual places 2022-11-12 14:57:14 +01:00
Jannis Christopher Köhl
3c6d1a723d Add test for repr(transparent) with scalar 2022-11-11 11:24:31 +01:00
Jannis Christopher Köhl
8ecb276735 Simplify creation of map 2022-11-10 19:12:10 +01:00
Jannis Christopher Köhl
9766ee0b20 Fix struct field tracking and add tests for it 2022-11-09 18:21:42 +01:00
Jannis Christopher Köhl
bfbca6c75c Completely remove tracking of references for now 2022-11-09 18:03:30 +01:00
Jannis Christopher Köhl
3997893ccb Fix rebase 2022-11-07 11:01:44 +01:00
Jannis Christopher Köhl
89f934917d Small corrections of documentation 2022-11-07 10:35:26 +01:00
Jannis Christopher Köhl
630e17d3e4 Limit number of tracked places, and some other perf improvements 2022-11-07 10:35:26 +01:00
Jannis Christopher Köhl
1f82a9f89e Move HasTop and HasBottom into lattice.rs 2022-11-07 10:35:25 +01:00
Jannis Christopher Köhl
de69d088a4 Explicitly match all terminators 2022-11-07 10:35:24 +01:00
Jannis Christopher Köhl
5b7b309c60 Improve documentation of assumptions 2022-11-07 10:35:24 +01:00
Jannis Christopher Köhl
274a49132b Improve documentation, plus some small changes 2022-11-07 10:35:23 +01:00
Jannis Christopher Köhl
aaa35b3e48 Add comment for the current retag situation 2022-11-07 10:35:22 +01:00
Jannis Christopher Köhl
3c0f3b04b5 Only assume Stacked Borrows if -Zunsound-mir-opts is given 2022-11-07 10:35:21 +01:00
Jannis Christopher Köhl
111324e17c Prevent registration inside references if target is !Freeze 2022-11-07 10:35:20 +01:00
Jannis Christopher Köhl
4478a87018 Fix formatting 2022-11-07 10:35:20 +01:00
Jannis Christopher Köhl
7ab1ba95de Remove Unknown state in favor of Value(Top) 2022-11-07 10:35:20 +01:00
Jannis Christopher Köhl
1765587846 Only track (trivially) freeze types 2022-11-07 10:35:20 +01:00
Jannis Christopher Köhl
b5063ab0e5 Make more assumptions explicit 2022-11-07 10:35:19 +01:00
Jannis Christopher Köhl
2f66e9417f Flood with bottom for Deinit, StorageLive and StorageDead 2022-11-07 10:35:19 +01:00
Jannis Christopher Köhl
eab77320e6 Handle NonDivergingIntrinsic and CopyNonOverlapping 2022-11-07 10:35:19 +01:00
Jannis Christopher Köhl
f99950f6ae Update test results after rebase 2022-11-07 10:35:18 +01:00
Jannis Christopher Köhl
c56e99cdba Fix typo 2022-11-07 10:35:18 +01:00
Jannis Christopher Köhl
13b70599c1 Only allow registration of scalars for now 2022-11-07 10:35:16 +01:00
Jannis Christopher Köhl
817c27744d Handle StorageLive 2022-11-07 10:35:16 +01:00
Jannis Christopher Köhl
e2ddf8a6e5 Add comment about downcast projection element 2022-11-07 10:35:15 +01:00
Jannis Christopher Köhl
1e5ca57014 Use StorageDead and Deinit to flood place 2022-11-07 10:35:15 +01:00
Jannis Christopher Köhl
904adcac0f Flood place on drop 2022-11-07 10:35:15 +01:00
Jannis Christopher Köhl
2113e45488 Remove superfluous line 2022-11-07 10:35:14 +01:00
Jannis Christopher Köhl
2e4d0820d2 Add more documentation 2022-11-07 10:35:14 +01:00
Jannis Christopher Köhl
fe84bbf844 Add tracking of unreachability 2022-11-07 10:35:13 +01:00
Jannis Christopher Köhl
16dedba1c8 Ignore terminators explicitly 2022-11-07 10:35:13 +01:00
Jannis Christopher Köhl
8a789ce009 Reject registration of downcasts for now 2022-11-07 10:35:12 +01:00
Jannis Christopher Köhl
ad99d2e15d Move handling of references and simplify flooding 2022-11-07 10:35:11 +01:00