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74 Commits

Author SHA1 Message Date
Tomasz Miąsko
67f455afe1 Suppress "erroneous constant used" for constants tainted by errors 
When constant evaluation fails because its MIR is tainted by errors,
suppress note indicating that erroneous constant was used, since those
errors have to be fixed regardless of the constant being used or not.
 2023-05-15 00:00:00 +00:00
Ralf Jung
586d17d330 share BinOp::Offset between CTFE and Miri 2023-04-28 16:00:08 +02:00
Scott McMurray
05a665f21a Lower intrinsics::offset to mir::BinOp::Offset 
They're semantically the same, so this means the backends don't need to handle the intrinsic and means fewer MIR basic blocks in pointer arithmetic code.
 2023-04-25 19:23:45 -07:00
Camille GILLOT
b275d2c30b Remove WithOptconstParam. 2023-04-20 17:48:32 +00:00
Gary Guo
5e6ed132fa Add UnwindAction::Unreachable 
This also makes eval machine's `StackPopUnwind`
redundant so that is replaced.
 2023-04-06 09:34:16 +01:00
Gary Guo
daeb844e0c Refactor unwind from Option to a new enum 2023-04-06 09:34:16 +01:00
Ben Kimock
8ccf53332e A MIR transform that checks pointers are aligned 2023-03-23 18:23:06 -04:00
Oli Scherer
f066d6785d Detect uninhabited types early in const eval. 2023-03-21 11:09:27 +00:00
Oli Scherer
83dec62b26 Add a layout argument to enforce_validity. 
This is in preparation of checking the validity only of certain types.
 2023-03-21 08:52:31 +00:00
Oli Scherer
38b7cdf393 Use target instead of machine for mir interpreter integer handling. 
The naming of `machine` only makes sense from a mir interpreter internals perspective, but outside users talk about the `target` platform
 2023-02-15 08:56:18 +00:00
Maybe Waffle
fd649a3cc5 Replace enum ==s with matches where it makes sense 2023-01-30 12:26:26 +00:00
Bryan Garza
7618163a1c Add comments and remove unnecessary code 2023-01-23 23:56:22 +00:00
Bryan Garza
172662dede Add back Machine::before_terminator(...) method 
Added it back because it's used by Miri, but in the compiler itself, it
will not do anything (just return `Ok(())`.
 2023-01-23 23:56:22 +00:00
Bryan Garza
eea42733ac Replace terminator-based const eval limit 
- Remove logic that limits const eval based on terminators, and use the
  stable metric instead (back edges + fn calls)
- Add unstable flag `tiny-const-eval-limit` to add UI tests that do not
  have to go up to the regular 2M step limit
 2023-01-23 23:56:22 +00:00
Bryan Garza
b763f9094f Remove debugging-related code 2023-01-23 23:56:22 +00:00
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
bors
56ee85274e Auto merge of #106090 - WaffleLapkin:dereffffffffff, r=Nilstrieb 
Remove some `ref` patterns from the compiler

Previous PR: https://github.com/rust-lang/rust/pull/105368

r? `@Nilstrieb`
 2023-01-20 04:52:28 +00:00
Scott McMurray
925dc37313 Stop using BREAK & CONTINUE in compiler 
Switching them to `Break(())` and `Continue(())` instead.

libs-api would like to remove these constants, so stop using them in compiler to make the removal PR later smaller.
 2023-01-17 23:17:51 -08:00
Maybe Waffle
6a28fb42a8 Remove double spaces after dots in comments 2023-01-17 08:09:33 +00:00
Maybe Waffle
3dca58e249 rustc_const_eval: remove ref patterns (+some pattern matching imps) 2023-01-17 07:48:19 +00:00
Ralf Jung
5a06b1e67c simplify alignment_check_failed a bit 2022-12-15 16:48:30 +00:00
Oli Scherer
b05c790fd6 Reuse the ctfe error emitting logic for the future incompat lint 2022-12-15 16:48:24 +00:00
Oli Scherer
d9d92ed7da Move alignment failure error reporting to machine 2022-12-15 16:07:35 +00:00
Oli Scherer
d66824dbc4 Make alignment checks a future incompat lint 2022-12-15 16:07:28 +00:00
Rageking8
58110572fb fix dupe word typos 2022-12-05 16:42:36 +08:00
Lukas Markeffsky
3d7e9c4b7f Revert "don't call align_offset during const eval, ever" 
This reverts commit f3a577bfae376c0222e934911865ed14cddd1539.
 2022-11-19 16:58:02 +01:00
Lukas Markeffsky
9e5d497b67 fix const align_offset implementation 2022-11-19 16:57:58 +01:00
Lukas Markeffsky
60f352fd7d replace potential ICE with graceful error (no_core only) 2022-11-19 16:47:42 +01:00
Lukas Markeffsky
a906f6cb69 don't call align_offset during const eval, ever 2022-11-19 16:47:42 +01:00
Lukas Markeffsky
211743b2c8 make const align_offset useful 2022-11-19 16:36:08 +01:00
Lukas Markeffsky
f770fecfe1 unify inherent impls of CompileTimeEvalContext 2022-11-19 16:36:08 +01:00
CastilloDel
c3a1ca6be7 Remove allow(rustc::potential_query_instability) in rustc_const_eval 
The use of FxHashMap has been replaced with FxIndexMap. For
more information see https://github.com/rust-lang/rust/issues/84447
 2022-10-18 17:44:01 +02:00
Oli Scherer
f632dbe46f The <*const T>::guaranteed_* methods now return an option for the unknown case 2022-09-09 15:16:04 +00:00
Deadbeef
075084f772 Make const_eval_select a real intrinsic 2022-09-04 20:35:23 +08:00
Ralf Jung
f29c3c421b entirely get rid of NeedsRfc CTFE errors 2022-08-28 13:40:24 -04:00
Ralf Jung
a9f9145b09 CTFE: exposing pointers and calling extern fn doesn't need an RFC, it is just impossible 2022-08-28 13:32:48 -04:00
Matthias Krüger
5b8081490f
Rollup merge of #101038 - RalfJung:interning-alignment, r=oli-obk 
no alignment check during interning

This should fix https://github.com/rust-lang/rust/issues/101034
r? `@oli-obk`

Unfortunately we don't have a self-contained testcase for this problem. I am not sure how it can be triggered...
 2022-08-28 09:35:19 +02:00
Ralf Jung
30fa931f92 make read_immediate error immediately on uninit, so ImmTy can carry initialized Scalar 2022-08-26 13:20:57 -04:00
Ralf Jung
b85178a5fc no alignment check during interning 2022-08-26 08:15:29 -04:00
Ralf Jung
d7ee421870 fix ICE with extra-const-ub-checks 2022-08-21 20:00:38 -04:00
Ralf Jung
be6bb56ee0 add -Zextra-const-ub-checks to enable more UB checking in const-eval 2022-08-07 09:54:40 -04:00
Ralf Jung
a10d8e4581 rename get_global_alloc to try_get_global_alloc 2022-07-20 17:09:22 -04:00
Ralf Jung
0ec3269db8 interpret: rename Tag/PointerTag to Prov/Provenance 
Let's avoid using two different terms for the same thing -- let's just call it "provenance" everywhere.
In Miri, provenance consists of an AllocId and an SbTag (Stacked Borrows tag), which made this even more confusing.
 2022-07-19 15:38:32 -04:00
5225225
27412d1e3e Use constant eval to do strict validity checks 2022-07-14 22:55:17 +01:00
Ralf Jung
1e0f3cb566 make a name less ambiguous 2022-07-07 12:01:36 -04:00
Oli Scherer
4d390de4a3 Add a helper function for checking whether a default function in a trait can be treated as const 2022-05-30 08:52:25 +00:00
Deadbeef
257f06587c Remove #[default..] and add #[const_trait] 2022-05-30 08:52:24 +00:00
Jakob Degen
09b0936db2 Refactor call terminator to always hold a destination place 2022-05-23 17:49:04 -04:00
Jacob Pratt
49c82f31a8
Remove crate visibility usage in compiler 2022-05-20 20:04:54 -04:00
carbotaniuman
bd5fce65c6 Rustc changes for permissive provenance 2022-05-13 12:30:25 -05:00