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path: root/compiler/rustc_const_eval/src/interpret
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2022-10-29Comment why normalization is needed for debug assertionsMichael Goulet-2/+9
2022-09-17Auto merge of #98588 - b-naber:valtrees-cleanup, r=lcnrbors-1/+13
Use only ty::Unevaluated<'tcx, ()> in type system r? `@lcnr`
2022-09-14address review againb-naber-12/+13
2022-09-13Address code review commentsEric Holk-6/+5
2022-09-13rebaseb-naber-1/+1
2022-09-13fixes/working versionb-naber-1/+1
2022-09-13use ty::Unevaluated<'tcx, ()> in type systemb-naber-1/+12
2022-09-12Rename some variantsMichael Goulet-1/+1
2022-09-12Construct dyn* during const interpMichael Goulet-1/+12
2022-09-12dyn* through more typechecking and MIREric Holk-0/+4
2022-09-12Plumb dyn trait representation through ty::DynamicEric Holk-3/+3
2022-09-08bound variables during ctfe are a buglcnr-3/+3
2022-09-07Use niche-filling optimization even when multiple variants have data.Michael Benfield-7/+9
Fixes #46213
2022-09-07Change name of "dataful" variant to "untagged"Michael Benfield-5/+5
This is in anticipation of a new enum layout, in which the niche optimization may be applied even when multiple variants have data.
2022-09-06Move CTFE handling of nondiverging intrinsics to intrinsics.rsOli Scherer-19/+29
2022-09-06Generalize the Assume intrinsic statement to a general Intrinsic statementOli Scherer-11/+12
2022-09-06Lower the assume intrinsic to a MIR statementOli Scherer-6/+9
2022-09-03Add a Machine hook for inline assemblyBen Kimock-2/+21
2022-09-03Auto merge of #101154 - RalfJung:validation-perf, r=oli-obkbors-4/+5
interpret: fix unnecessary allocation in validation visitor Should fix the perf regression introduced by https://github.com/rust-lang/rust/pull/100043. r? `@oli-obk`
2022-09-01Directly use the `instrument` macro instead of its full pathOli Scherer-1/+1
2022-09-01Auto merge of #100707 - dzvon:fix-typo, r=davidtwcobors-7/+7
Fix a bunch of typo This PR will fix some typos detected by [typos]. I only picked the ones I was sure were spelling errors to fix, mostly in the comments. [typos]: https://github.com/crate-ci/typos
2022-08-31interpret: use new OpTy::len for Len rvalueRalf Jung-2/+2
This avoids a `force_allocation`
2022-08-31Fix a bunch of typoDezhi Wu-7/+7
This PR will fix some typos detected by [typos]. I only picked the ones I was sure were spelling errors to fix, mostly in the comments. [typos]: https://github.com/crate-ci/typos
2022-08-30Rollup merge of #101101 - RalfJung:read-pointer-as-bytes, r=oli-obkDylan DPC-85/+90
interpret: make read-pointer-as-bytes a CTFE-only error with extra information Next step in the reaction to https://github.com/rust-lang/rust/issues/99923. Also teaches Miri to implicitly strip provenance in more situations when transmuting pointers to integers, which fixes https://github.com/rust-lang/miri/issues/2456. Pointer-to-int transmutation during CTFE now produces a message like this: ``` = help: this code performed an operation that depends on the underlying bytes representing a pointer = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported ``` r? ``@oli-obk``
2022-08-29Auto merge of #101167 - matthiaskrgr:rollup-yt3jdmp, r=matthiaskrgrbors-0/+1
Rollup of 7 pull requests Successful merges: - #100898 (Do not report too many expr field candidates) - #101056 (Add the syntax of references to their documentation summary.) - #101106 (Rustdoc-Json: Retain Stripped Modules when they are imported, not when they have items) - #101131 (CTFE: exposing pointers and calling extern fn is just impossible) - #101141 (Simplify `get_trait_ref` fn used for `virtual_function_elimination`) - #101146 (Various changes to logging of borrowck-related code) - #101156 (Remove `Sync` requirement from lint pass objects) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
2022-08-29Rollup merge of #101131 - RalfJung:ctfe-no-needs-rfc, r=oli-obkMatthias Krüger-0/+1
CTFE: exposing pointers and calling extern fn is just impossible The remaining "needs RFC" errors are just needlessly confusing, I think -- time to get rid of that error variant. They are anyway only reachable with miri-unleashed (if at all). r? `@oli-obk`
2022-08-29interpret: fix unnecessary allocation in validation visitorRalf Jung-4/+5
2022-08-29Rollup merge of #100239 - RalfJung:const-prop-uninit, r=oli-obkDylan DPC-25/+9
remove an ineffective check in const_prop Based on https://github.com/rust-lang/rust/pull/100043, only the last two commits are new. ConstProp has a special check when reading from a local that prevents reading uninit locals. However, if that local flows into `force_allocation`, then no check fires and evaluation proceeds. So this check is not really effective at preventing accesses to uninit locals. With https://github.com/rust-lang/rust/pull/100043, `read_immediate` and friends always fail when reading uninit locals, so I don't see why ConstProp would need a separate check. Thus I propose we remove it. This is needed to be able to do https://github.com/rust-lang/rust/pull/100085.
2022-08-29Rollup merge of #100897 - RalfJung:const-not-to-mutable, r=lcnrMatthias Krüger-27/+45
extra sanity check against consts pointing to mutable memory This should be both unreachable and redundant (since we already ensure that validation only reads from read-only memory, when validating consts), but I feel like we cannot be paranoid enough here, and also if this ever fails it'll be a nicer error than the "cannot read from mutable memory" error.
2022-08-29Rollup merge of #99027 - tmiasko:basic-blocks, r=oli-obkMatthias Krüger-3/+3
Replace `Body::basic_blocks()` with field access Since the refactoring in #98930, it is possible to borrow the basic blocks independently from other parts of MIR by accessing the `basic_blocks` field directly. Replace unnecessary `Body::basic_blocks()` method with a direct field access, which has an additional benefit of borrowing the basic blocks only.
2022-08-28CTFE: exposing pointers and calling extern fn doesn't need an RFC, it is ↵Ralf Jung-0/+1
just impossible
2022-08-28validation should only catch UB errorsRalf Jung-17/+20
2022-08-27interpret: make read-pointer-as-bytes *always* work in MiriRalf Jung-44/+46
and show some extra information when it happens in CTFE
2022-08-27interpret: rename relocation → provenanceRalf Jung-25/+25
2022-08-27Auto merge of #100999 - nnethercote:shrink-FnAbi, r=bjorn3bors-6/+4
Shrink `FnAbi` Because they can take up a lot of memory in debug and release builds. r? `@bjorn3`
2022-08-27remove a now-useless machine hookRalf Jung-24/+5
2022-08-27remove an ineffective check in const_propRalf Jung-1/+4
2022-08-26make read_immediate error immediately on uninit, so ImmTy can carry ↵Ralf Jung-247/+166
initialized Scalar
2022-08-26remove some now-unnecessary parameters from check_bytesRalf Jung-12/+3
2022-08-26remove enforce_number_init machine hook that Miri no longer needsRalf Jung-24/+8
2022-08-26fix an outdated machine hook nameRalf Jung-7/+7
2022-08-26Replace `Body::basic_blocks()` with field accessTomasz Miąsko-3/+3
2022-08-26Move `ArgAbi::pad_i32` into `PassMode::Cast`.Nicholas Nethercote-4/+2
Because it's only needed for that variant. This shrinks the types and clarifies the logic.
2022-08-26Turn `ArgAbi::pad` into a `bool`.Nicholas Nethercote-1/+1
Because it's only ever set to `None` or `Some(Reg::i32())`.
2022-08-26Box `CastTarget` within `PassMode`.Nicholas Nethercote-2/+2
Because `PassMode::Cast` is by far the largest variant, but is relatively rare. This requires making `PassMode` not impl `Copy`, and `Clone` is no longer necessary. This causes lots of sigil adjusting, but nothing very notable.
2022-08-23extra sanity check against consts pointing to mutable memoryRalf Jung-27/+45
2022-08-19Rollup merge of #100208 - RalfJung:dyn-upcast-nop, r=petrochenkovDylan DPC-1/+6
make NOP dyn casts not require anything about the vtable As suggested [on Zulip](https://rust-lang.zulipchat.com/#narrow/stream/144729-t-types/topic/dyn-upcasting.20stabilization/near/292151439). This matches what the codegen backends already do, and what Miri did do until https://github.com/rust-lang/rust/pull/99420 when I made it super extra paranoid.
2022-08-17Rollup merge of #99972 - RalfJung:1zst, r=lcnrMatthias Krüger-1/+3
interpret: only consider 1-ZST when searching for receiver `repr(transparent)` currently entirely rejects ZST with alignment larger than 1 (which is odd, arguably [this](https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=02870f29396fa948c3123cb53d869ad1) should be accepted), so this should be safe. And if it ever isn't safe then that is very likely a bug elsewhere in the compiler.
2022-08-15Rename Machine memory hooks to suggest when they runBen Kimock-8/+14
2022-08-12Rollup merge of #100229 - RalfJung:extra-const-ub-checks, r=lcnrDylan DPC-12/+4
add -Zextra-const-ub-checks to enable more UB checking in const-eval Cc https://github.com/rust-lang/rust/issues/99923 r? `@oli-obk`
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