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2020-03-06fix various typosMatthias Krüger-1/+1
2020-03-04Don't use "if let" bindings to only check a value and not actually bind ↵Matthias Krüger-1/+1
anything. For example: `if let Some(_) = foo() {}` can be reduced to `if foo().is_some() {}` (clippy::redundant_pattern_matching)
2020-03-03Rollup merge of #69650 - matthiaskrgr:clnp, r=varkorDylan DPC-1/+1
cleanup more iterator usages (and other things) * Improve weird formatting by moving comment inside else-code block. * Use .any(x) instead of .find(x).is_some() on iterators. * Use .nth(x) instead of .skip(x).next() on iterators. * Simplify conditions like x + 1 <= y to x < y * Use let instead of match to get value of enum with single variant.
2020-03-03Improve linking of crates with circular dependenciesTomasz Miąsko-7/+15
Previously, the code responsible for handling the cycles between crates introduces through weak lang items, would keep a set of missing language items: * extending it with items missing from the current crate, * removing items provided by the current crate, * grouping the crates when the set changed from non-empty back to empty. This could produce incorrect results, if a lang item was missing from a crate that comes after the crate that provides it (in the loop iteration order). In that case the grouping would not take place. The changes here address this specific failure scenario by keeping track of two separate sets of crates. Those that are required to link successfully, and those that are available for linking. Verified using test case from 69368.
2020-03-03Use .nth(x) instead of .skip(x).next() on iterators.Matthias Krüger-1/+1
2020-02-29Rename `syntax` to `rustc_ast` in source codeVadim Petrochenkov-2/+2
2020-02-28simplify condition in start_executing_work()Matthias Krüger-5/+5
2020-02-28use is_empty() instead of len() == x to determine if structs are empty.Matthias Krüger-8/+8
2020-02-21Detect Chocolatey MinGW installationMateusz Mikuła-3/+10
2020-02-21Fix MinGW detection for CygwinMateusz Mikuła-8/+7
2020-02-12Rollup merge of #67954 - nikic:new-pm, r=nagisaDylan DPC-0/+3
Support new LLVM pass manager Add support for the new LLVM pass manager behind a `-Z new-llvm-pass-manager=on` option. Both the pre-link optimization and LTO pipelines use the new pass manager. There's some bits that are not supported yet: * `-C passes`. NewPM requires an entirely different way of specifying custom pass pipelines. We should probably expose that functionality, but it doesn't directly map to what `-C passes` does. * NewPM has no support for custom inline parameters right now. We'd have to add upstream support for that first. * NewPM does not support PGO at O0 in LLVM 9 (which is why those tests fail with NewPM enabled). This is supported in LLVM 10. * NewPM does not support MergeFunctions in LLVM 9. I've landed this upstream just before the cut, so we'll be able to re-enable that with LLVM 10. Closes #64289. r? @ghost
2020-02-12Add support for new pass managerNikita Popov-0/+3
The new pass manager can be enabled using -Z new-llvm-pass-manager=on.
2020-02-11rustbuild: include channel in sanitizers installed nameMarc-Antoine Perennou-2/+5
Allows parallel install of different rust channels Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
2020-02-10self-profile: Support arguments for generic_activities.Michael Woerister-7/+14
2020-02-05Auto merge of #67429 - mati865:mingw-ultimate-fix, r=alexcrichtonbors-0/+78
windows-gnu: prefer system crt libraries if they are available The origin of the issue is the fact Rust ships mingw-w64 libraries but no headers and prefers own libraries over the system ones. This leads to situation when headers aren't compatible with libraries (mingw-w64 doesn't provide any forward compatibility and AFAIK backwards compatibility is guaranteed only within major release series). It's easier to understand how this PR works when looking at the linker invocation before and with this PR: https://www.diffchecker.com/GEuYFmzo It adds system libraries path before Rust libraries so the linker will prefer them. It has potential issue when system has files with the same names as Rust but that could be avoided by moving Rust shipped mingw-w64 libraries from `lib/rustlib/x86_64-pc-windows-gnu/lib` to say `lib/rustlib/x86_64-pc-windows-gnu/lib/mingw`. Then adding linker paths in this order: Rust libraries, system libraries, Rust shipped mingw-w64 libraries. Fixes #47048 Fixes #49078 Fixes #53454 Fixes #60912
2020-02-04Prefer system MinGW libs when availableMateusz Mikuła-0/+78
2020-02-01Auto merge of #68133 - Centril:slimmer-syntax, r=petrochenkovbors-1/+1
Slimmer syntax High-level summary of changes: - The `syntax::node_count` pass is moved into `rustc_ast_passes`. This works towards improving #65031 by making compiling `syntax` go faster. - The `syntax::{GLOBALS, with_globals, ..}` business is consolidated into `syntax::attr` for cleaner code and future possible improvements. - The pretty printer loses its dependency on `ParseSess`, opting to use `SourceMap` & friends directly instead. - Some drive by cleanup of `syntax::attr::HasAttr` happens. - Builtin attribute logic (`syntax::attr::builtin`) + `syntax::attr::allow_internal_unstable` is moved into a new `rustc_attr` crate. More logic from `syntax::attr` should be moved into that crate over time. This also means that `syntax` loses all mentions of `ParseSess`, which enables the next point. - The pretty printer `syntax::print` is moved into a new crate `rustc_ast_pretty`. - `rustc_session::node_id` is moved back as `syntax::node_id`. As a result, `syntax` gets to drop dependencies on `rustc_session` (and implicitly `rustc_target`), `rustc_error_codes`, and `rustc_errors`. Moreover `rustc_hir` gets to drop its dependency on `rustc_session` as well. At this point, these crates are mostly "pure data crates", which is approaching a desirable end state. - We should consider renaming `syntax` to `rustc_ast` now.
2020-02-01Move builtin attribute logic to new rustc_attr crate.Mazdak Farrokhzad-1/+1
For now, this is all the crate contains, but more attribute logic & types will be moved there over time.
2020-01-28Add support for Control Flow Guard on Windows.Andrew Paverd-1/+26
This patch enables rustc to emit the required LLVM module flags to enable Control Flow Guard metadata (cfguard=1) or metadata and checks (cfguard=2). The LLVM module flags are ignored on unsupported targets and operating systems.
2020-01-24Auto merge of #68414 - michaelwoerister:share-drop-glue, r=alexcrichtonbors-24/+71
Also share drop-glue when compiling with -Zshare-generics (i.e. at opt-level=0) This PR adds drop-glue to the set of monomorphizations that can be shared across crates via `-Zshare-generics`. This version of the PR might have detrimental effects on performance as it makes lots of stuff dependent on a single query results (`upstream_monomorphizations_for(def_id_of_drop_in_place)`). That should be fixable but let's do a perf run first. Potentially fixes issue https://github.com/rust-lang/rust/issues/64140. (cc @alexcrichton) The changes here are related to @matthewjasper's https://github.com/rust-lang/rust/pull/67332 but should be mostly orthogonal. r? @ghost
2020-01-24Rollup merge of #68473 - nopsledder:rust_sanitizer_fuchsia, r=alexcrichtonTyler Mandry-1/+1
Enable ASan on Fuchsia This change adds the x86_64-fuchsia and aarch64-fuchsia LLVM targets to those allowed to invoke -Zsanitizer. Currently, the only overlap between compiler_rt sanitizers supported by both rustc and Fuchsia is ASan.
2020-01-23Add projection query for upstream drop-glue instances.Michael Woerister-15/+48
This reduces the amount of invalidated data when new types are add to upstream crates.
2020-01-23Make drop-glue take advantage of -Zshare-generics.Michael Woerister-8/+20
2020-01-23Make ExportedSymbols type more local because it's not supposed to beMichael Woerister-4/+6
used outside of the LLVM backend.
2020-01-22Rollup merge of #68410 - tmiasko:msan-lto, r=varkorTyler Mandry-1/+11
Export weak symbols used by MemorySanitizer Export weak symbols defined by MemorySanitizer instrumentation, which are used to implement `-Zsanitizer-memory-track-origins` and `-Zsanitizer-recover=memory`. Previously, when using fat LTO, they would internalized and eliminated. Fixes #68367.
2020-01-23Add `-Z no-link` flagVictor Ding-0/+1
Adds a compiler option to allow rustc compile a crate without linking. With this flag, rustc serializes codegen_results into a .rlink file.
2020-01-22Enable ASan on FuchsiaAaron Green-1/+1
This change adds the x86_64-fuchsia and aarch64-fuchsia LLVM targets to those allowed to invoke -Zsanitizer. Currently, the only overlap between compiler_rt sanitizers supported by both rustc and Fuchsia is ASan.
2020-01-21Mark __msan_keep_going as an exported symbol for LTOTomasz Miąsko-2/+6
2020-01-20Mark __msan_track_origins as an exported symbol for LTONikita Popov-1/+7
2020-01-20Make sure that all upstream generics get re-exported from Rust dylibs.Michael Woerister-9/+38
2020-01-11Auto merge of #67458 - ↵bors-8/+18
pnkfelix:fix-66530-by-propagating-fatal-error-from-worker, r=matthewjasper When a codegen worker has a FatalError, propagate it instead of ICE'ing. Fix #66530
2020-01-11Rollup merge of #68043 - Zoxc:missing-timers, r=wesleywiserMazdak Farrokhzad-22/+36
Add some missing timers Based on https://github.com/rust-lang/rust/pull/67988 r? @wesleywiser
2020-01-10Auto merge of #65241 - tmiasko:no-std-san, r=alexcrichtonbors-47/+42
build-std compatible sanitizer support ### Motivation When using `-Z sanitizer=*` feature it is essential that both user code and standard library is instrumented. Otherwise the utility of sanitizer will be limited, or its use will be impractical like in the case of memory sanitizer. The recently introduced cargo feature build-std makes it possible to rebuild standard library with arbitrary rustc flags. Unfortunately, those changes alone do not make it easy to rebuild standard library with sanitizers, since runtimes are dependencies of std that have to be build in specific environment, generally not available outside rustbuild process. Additionally rebuilding them requires presence of llvm-config and compiler-rt sources. The goal of changes proposed here is to make it possible to avoid rebuilding sanitizer runtimes when rebuilding the std, thus making it possible to instrument standard library for use with sanitizer with simple, although verbose command: ``` env CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS=-Zsanitizer=thread cargo test -Zbuild-std --target x86_64-unknown-linux-gnu ``` ### Implementation * Sanitizer runtimes are no long packed into crates. Instead, libraries build from compiler-rt are used as is, after renaming them into `librusc_rt.*`. * rustc obtains runtimes from target libdir for default sysroot, so that they are not required in custom build sysroots created with build-std. * The runtimes are only linked-in into executables to address issue #64629. (in previous design it was hard to avoid linking runtimes into static libraries produced by rustc as demonstrated by sanitizer-staticlib-link test, which still passes despite changes made in #64780). cc @kennytm, @japaric, @firstyear, @choller
2020-01-09Label unmarked timeJohn Kåre Alsaker-22/+36
2020-01-10Rollup merge of #67975 - EmbarkStudios:export-statics-wasm, r=alexcrichtonYuki Okushi-1/+1
Export public scalar statics in wasm Fixes #67453 I am not sure which export level statics should get when exporting them in wasm. This small change fixes the issue that I had, but this might not be the correct way to implement this.
2020-01-09Link sanitizer runtimes instead of injecting crate dependenciesTomasz Miąsko-47/+42
2020-01-09Change -Z time event naming scheme and make them generic activitiesJohn Kåre Alsaker-3/+3
2020-01-08Remove `-Z continue-parse-after-error`Vadim Petrochenkov-1/+0
2020-01-07Always export static variables as SymbolExportLevel::C in wasmmaik-7/+2
2020-01-07Export scalar statics in wasmmaik-1/+6
2020-01-05Remove rustc_hir reexports in rustc::hir.Mazdak Farrokhzad-7/+7
2020-01-05Use self profile infrastructure for -Z time and -Z time-passesJohn Kåre Alsaker-35/+21
2020-01-04DefId{Map,Set} -> rustc::hir::def_idMazdak Farrokhzad-2/+1
2020-01-04canonicalize FxHash{Map,Set} importsMazdak Farrokhzad-2/+3
2020-01-04extract rustc::middle::codegen_fn_attrsMazdak Farrokhzad-1/+1
2020-01-02Normalize `syntax::symbol` imports.Mazdak Farrokhzad-4/+4
2020-01-01Rename `syntax_pos` to `rustc_span` in source codeVadim Petrochenkov-3/+3
2019-12-30When a codegen worker has a FatalError, propagate it instead of ICE'ing.Felix S. Klock II-8/+18
2019-12-29Move reachable_set query in librustc_passes.Camille GILLOT-2/+1
2019-12-25tidy: change msdn links to newer locationsLzu Tao-3/+3
see accouncement at https://docs.microsoft.com/welcome-to-docs
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