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2019-12-11Auto merge of #66650 - matthewjasper:nonuniform-array-move, r=pnkfelixbors-1/+2
Remove uniform array move MIR passes This PR fixes a number of bugs caused by limitations of this pass * Projections from constant indexes weren't being canonicalized * Constant indexes from the start weren't being canonicalized (they could have different min_lengths) * It didn't apply to non-moves This PR makes the following changes to support removing this pass: * ConstantIndex of arrays are now generated in a canonical form (from the start, min_length is the actual length). * Subslices are now split when generating move paths and when checking subslices have been moved. Additionally * The parent move path of a projection from an array element is now calculated correctly closes #66502
2019-12-11Rollup merge of #67134 - oli-obk:const_prop_zst, r=wesleywiserYuki Okushi-1/+8
Ensure that we get a hard error on generic ZST constants if their bod… …y causes an error during evaluation cc #67083 (does not fix because we still need the beta backport) r? @wesleywiser cc @RalfJung
2019-12-09Make const index and subslice array projections more usefulMatthew Jasper-1/+2
* `min_length` is now exact for const index elements. * const index elements are always from the start. * make array `Subslice` `PlaceElems` count both `from` and `to` from the start.
2019-12-08Auto merge of #66981 - michaelwoerister:measureme-0.5.0, r=Mark-Simulacrumbors-1/+1
Update measureme crate to 0.5.0 This PR updates the `measureme` self-profiling crate to the latest release. Heads up, this version changes the trace file format, so the `summarize` tool on perf.rlo needs to be updated to 0.5 too. r? @Mark-Simulacrum cc @wesleywiser
2019-12-08Rollup merge of #66991 - Nashenas88:body_cache_cleanup, r=eddybMazdak Farrokhzad-3/+3
Cleanup BodyCache After this PR: - `BodyCache` is renamed to `BodyAndCache` - `ReadOnlyBodyCache` is renamed to `ReadOnlyBodyAndCache` - `ReadOnlyBodyAndCache::body` fn is removed and all calls to it are replaced by a deref (possible due to fix of its `Deref` imp in #65947) cc @eddyb @oli-obk
2019-12-08Rollup merge of #66325 - BartMassey:master, r=joshtriplettMazdak Farrokhzad-1/+1
Change unused_labels from allow to warn Fixes #66324, making the unused_labels lint warn instead of allow by default. I'm told @rust-lang/lang will need to review this, and perhaps will want to do a crater run.
2019-12-08Ensure that we get a hard error on generic ZST constants if their body ↵Oliver Scherer-1/+8
causes an error during evaluation
2019-12-07Auto merge of #65881 - anp:implicit-caller-location, r=eddyb,oli-obkbors-12/+50
Implement #[track_caller] attribute. (RFC 2091 4/N) Implements the `#[track_caller]` attribute in both const and codegen contexts. The const implementation walks up the stack to find the nearest untracked callsite. The codegen implementation adds an implicit argument to tracked function calls, and populates it with either a call to the previously-landed intrinsic or if the caller has `#[track_caller]` with a copy of the location passed to the current function. Also includes a little cleanup and a few comments in the other caller location areas. [Depends on: 65664](https://github.com/rust-lang/rust/pull/65664) [RFC 2091 text](https://github.com/rust-lang/rfcs/blob/master/text/2091-inline-semantic.md) [Tracking issue](https://github.com/rust-lang/rust/issues/47809) [Tracking doc](https://paper.dropbox.com/doc/track_rfc_2091_impl-notes--Anf1NwnIb0xcRv31YLIadyj0Ag-rwCdRc2fi2yvRZ7syGZ9q#:uid=863513134494965680023183&h2=TODO-actually-pass-location-to)
2019-12-06Address review feedback.Adam Perry-4/+4
2019-12-06Caller location is propagated via immediates rather than memory.Adam Perry-8/+13
2019-12-06Auto merge of #65195 - varkor:to_option, r=Centrilbors-26/+11
Rename `bool::then_*` to `bool::to_option_*` and use where appropriate Name change following https://github.com/rust-lang/rfcs/pull/2757. Also try it out throughout the compiler in places I think makes the code more readable.
2019-12-06Rename to `then_some` and `then`varkor-5/+5
2019-12-06Use `to_option_with` in several placesvarkor-5/+8
2019-12-06Use `to_option` in various placesvarkor-26/+8
2019-12-05Pass a location to #[track_caller] functions in codegen_call_terminator.Adam Perry-4/+29
2019-12-05Add field to FunctionCx for passing caller location.Adam Perry-8/+16
2019-12-05rustc_codegen_ssa: Fix line accidentally reverted during rebasePaul Daniel Faria-1/+1
2019-12-05rustc: Apply clearer naming to BodyAndCache, fix Deref impl, remove unneeded ↵Paul Daniel Faria-2/+2
Index impl, remove body fn rustc_codegen_ssa: Fix BodyAndCache reborrow to Body and change instances of body() call to derefence rustc_mir: Fix BodyAndCache reborrow to Body and change intances of body() call to derefence
2019-12-06use abort instead of unreachableRalf Jung-1/+9
2019-12-05commentsRalf Jung-2/+5
2019-12-05codegen: mark invalid SetDiscriminant unreachableRalf Jung-2/+3
2019-12-04Auto merge of #65947 - eddyb:fn-abi, r=oli-obk,nagisabors-110/+92
rustc: split FnAbi's into definitions/direct calls ("of_instance") and indirect calls ("of_fn_ptr"). After this PR: * `InstanceDef::Virtual` is only used for "direct" virtual calls, and shims around those calls use `InstanceDef::ReifyShim` (i.e. for `<dyn Trait as Trait>::f as fn(_)`) * this could easily be done for intrinsics as well, to allow their reification, but I didn't do it * `FnAbi::of_instance` is **always** used for declaring/defining an `fn`, and for direct calls to an `fn` * this is great for e.g. https://github.com/rust-lang/rust/pull/65881 (`#[track_caller]`), which can introduce the "caller location" argument into "codegen signatures" by only changing `FnAbi::of_instance`, after this PR * `FnAbi::of_fn_ptr` is used primarily for indirect calls, i.e. to `fn` pointers * *not* virtual calls (which use `FnAbi::of_instance` with `InstanceDef::Virtual`) * there's also a couple uses where the `rustc_codegen_llvm` needs to declare (i.e. FFI-import) an LLVM function that has no Rust declaration available at all * at least one of them could probably be a "weak lang item" instead As there are many steps, this PR is best reviewed commit by commit - some of which arguably should be in their own PRs, I may have gotten carried away a bit. cc @nagisa @rkruppe @oli-obk @anp
2019-12-03Rollup merge of #66957 - parthsane:pvs/ftx_lld_linker, r=alexcrichtonMazdak Farrokhzad-1/+2
Change Linker for x86_64-fortanix-unknown-sgx target to rust-lld Changed linker for `x86_64-fortanix-unknown-sgx` target to `rust-lld` This change needed the RelaxELFRelocations flag to be set for it to work correctly r? @jethrogb
2019-12-03Move cgu_reuse_tracker to librustc_sessionMark Rousskov-2/+3
2019-12-03Decouple CguReuseTracker from SessionMark Rousskov-1/+1
2019-12-03rustc: take a PolyFnSig instead of an FnSig in FnAbi::of_fn_ptr.Eduard-Mihai Burtescu-17/+13
2019-12-03rustc: rename FnAbi::new to FnAbi::of_fn_ptr.Eduard-Mihai Burtescu-1/+1
2019-12-03rustc: compute FnAbi's for virtual calls through FnAbi::of_instance.Eduard-Mihai Burtescu-22/+26
2019-12-03rustc_codegen_ssa: use FnAbi::of_instance wherever possible.Eduard-Mihai Burtescu-7/+5
2019-12-03rustc_codegen_ssa: take a FnAbi instead of a FnSig in declare_fn.Eduard-Mihai Burtescu-2/+3
2019-12-03rustc_codegen_ssa: remove define_fn and define_internal_fn.Eduard-Mihai Burtescu-14/+0
2019-12-03rustc_codegen_ssa: clean up lifetimes on TerminatorCodegenHelper's methods.Eduard-Mihai Burtescu-14/+13
2019-12-03rustc_codegen_ssa: make codegen_instance a simple wrapper for codegen_mir.Eduard-Mihai Burtescu-10/+7
2019-12-03rustc_codegen_ssa: use &'tcx mir::Body<'tcx> instead of &'a ... for the MIR ↵Eduard-Mihai Burtescu-28/+29
body.
2019-12-03rustc: expose the mir::Body reference lifetime from mir::ReadOnlyBodyCache ↵Eduard-Mihai Burtescu-7/+7
(#64736 fallout).
2019-12-03Update measureme crate to 0.5.0.Michael Woerister-1/+1
2019-12-03Change linker for x86_64-fortanix-unknown-sgx to rust-lldParth Sane-1/+2
For SGX, the relocation using the relocation table is done by the code in rust/src/libstd/sys/sgx/abi/reloc.rs and this code should not require relocation. Setting RelaxELFRelocations flag if allows this to happen, hence adding a Target Option for it.
2019-12-02Fix issues caused during rebasingPaul Daniel Faria-1/+1
2019-12-02Remove files created during conflict resolutionPaul Daniel Faria-1696/+0
2019-12-02Fix typos caused during rebasePaul Daniel Faria-2/+1698
2019-12-02Remove HasLocalDecls impl from BodyCache's, properly reborrow to Body, ↵Paul Daniel Faria-7/+7
rename all body_cache back to body
2019-12-02Remove BodyCache.body and rely on Deref as much as possible for ↵Paul Daniel Faria-11/+13
ReadOnlyBodyCache
2019-12-02Undo minor changes that weren't needed, fix one lifetime typoPaul Daniel Faria-30/+30
2019-12-02Fix compilation errors created during rebasePaul Daniel Faria-2/+2
2019-12-02Fix tidy errorsPaul Daniel Faria-1/+5
2019-12-02Simplify BodyCache impl and fix all remaining type errors in librustc_mir ↵Paul Daniel Faria-55/+51
(lifetime errors still exist)
2019-12-02Account for new maybe_sideeffect helper that requires predecessorsPaul Daniel Faria-45/+45
2019-12-02Convert &mut to & since the reference didn't need to be mutablePaul Daniel Faria-2/+2
2019-12-02Revert back to using FunctionCx's BodyPaul Daniel Faria-147/+118
2019-12-02Add Body back as field of FunctionCx, but under a different lifetimePaul Daniel Faria-49/+46
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