Rollup of 10 pull requests #74245
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Rollup of 10 pull requests #74245
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- Mangles (T0, T1) as tuple<T0, T1>, possibly unblocking rust-lang#70052 "Update hashbrown to 0.8.0" - Prettifies Rust tuples similar to VS2017's std::tuple - Improves debuginfo test coverage
PDB debug information doesn't appear to be emitted for basic types. By defining u32 as a typedef for unsigned __int32 when targeting MSVC, we allow CDB and other debuggers to recognize "u32" as a type/expression. This in turn unblocks rust-lang#70052 "Update hashbrown to 0.8.0" by allowing $T1 ..= $T3 to resolve, which would otherwise fail to resolve when builtin types fail to parse.
…rks into own file
…_` benches, and clean up stray semicolon
When cross-compiling, the LLVM build system recurses to build tools that need to run on the host system. However, since we pass cmake defines to set the compiler and target, LLVM still compiles these tools for the target system, rather than the host. The tools then fail to execute during the LLVM build. This change sets defines for the tools that need to run on the host (llvm-nm, llvm-tablegen, and llvm-config), so that the LLVM build does not attempt to build them, and instead relies on the tools already built. If compiling with clang-cl, this change also adds the `--target` option to specify the target triple. MSVC compilers do not require this, since there is a separate compiler binary for cross-compilation.
As of rust-lang#73564, the --eh-frame-hdr flag is unconditionally passed to linkers on many platforms. The illumos link editor does not currently support this flag. The linker machinery in the Rust toolchain currently seems to use the (potentially cross-compiled) target to choose linker flags, rather than looking at what might be running on the build system. Disabling the flag for all illumos/Solaris targets seems like the best we can do for now without more serious surgery.
Use `matches!` instead of old `if let`
Stabilize `transmute` in constants and statics but not const fn cc rust-lang#53605 (leaving issue open so we can add `transmute` to `const fn` later) Previous attempt: rust-lang#64011 r? @RalfJung cc @rust-lang/wg-const-eval
…manieu debuginfo: Mangle tuples to be natvis friendly, typedef basic types These changes are meant to unblock rust-lang#70052 "Update hashbrown to 0.8.0" by allowing the use of `tuple<u64, u64>` as a .natvis expression in MSVC style debuggers (MSVC, WinDbg, CDB, etc.) * f8eb81b does the actual mangling of `(u64, u64)` -> `tuple<u64, 64>` * 24a728a allows `u64` to resolve (fixing `$T1` / `$T2` when used to visualize `HashMap<u64, u64, ...>`)
Optimize is_ascii for str and [u8]. This optimizes the `is_ascii` function for `[u8]` and `str`. I've been surprised this wasn't done for a while, so I just did it. Benchmarks comparing before/after look like: ``` test ascii::long_readonly::is_ascii_slice_iter_all ... bench: 174 ns/iter (+/- 79) = 40172 MB/s test ascii::long_readonly::is_ascii_slice_libcore ... bench: 16 ns/iter (+/- 5) = 436875 MB/s test ascii::medium_readonly::is_ascii_slice_iter_all ... bench: 12 ns/iter (+/- 3) = 2666 MB/s test ascii::medium_readonly::is_ascii_slice_libcore ... bench: 2 ns/iter (+/- 0) = 16000 MB/s test ascii::short_readonly::is_ascii_slice_iter_all ... bench: 3 ns/iter (+/- 0) = 2333 MB/s test ascii::short_readonly::is_ascii_slice_libcore ... bench: 4 ns/iter (+/- 0) = 1750 MB/s ``` (Taken on a x86_64 macbook 2.9 GHz Intel Core i9 with 6 cores) Where `is_ascii_slice_iter_all` is the old version, and `is_ascii_slice_libcore` is the new. I tried to document the code well, so hopefully it's understandable. It has fairly exhaustive tests ensuring size/align doesn't get violated -- because `miri` doesn't really help a lot for this sort of code right now, I tried to `debug_assert` all the safety invariants I'm depending on. (Of course, none of them are required for correctness or soundness -- just allows us to test that this sort of pointer manipulation is sound and such). Anyway, thanks. Let me know if you have questions/desired changes.
Fix cross compilation of LLVM to aarch64 Windows targets When cross-compiling, the LLVM build system recurses to build tools that need to run on the host system. However, since we pass cmake defines to set the compiler and target, LLVM still compiles these tools for the target system, rather than the host. The tools then fail to execute during the LLVM build. This change sets defines for the tools that need to run on the host (llvm-nm, llvm-tablegen, and llvm-config), so that the LLVM build does not attempt to build them, and instead relies on the tools already built. If compiling with clang-cl, adds the `--target` option to specify the target triple. MSVC compilers do not require this, since there is a separate compiler binary for each cross-compilation target. Related issue: rust-lang#72881 Requires LLVM change: rust-lang/llvm-project#67
…-fix, r=petrochenkov linker: illumos ld does not support --eh-frame-hdr As of rust-lang#73564, the --eh-frame-hdr flag is unconditionally passed to linkers on many platforms. The illumos link editor does not currently support this flag. The linker machinery in the Rust toolchain currently seems to use the (potentially cross-compiled) target to choose linker flags, rather than looking at what might be running on the build system. Disabling the flag for all illumos/Solaris targets seems like the best we can do for now without more serious surgery.
…s, r=petrochenkov Add a help to use `in_band_lifetimes` in nightly Fixes rust-lang#73775
Reword incorrect `self` token suggestion
Minor refactor for rustc_resolve diagnostics match Use `matches!` instead of old `if let`
Fix rust-lang#74081 and add the test case from rust-lang#74236
update miri This incorporates rust-lang/miri#1474. [Last time](rust-lang#74146) that change caused trouble but I fixed xargo since then and [now it should work](rust-lang#74146 (comment)). Cc @rust-lang/miri r? @ghost
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⌛ Testing commit c8c4fd7 with merge 901773a3a19cde89b5c46d3025ce1fcb32f690b1... |
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💔 Test failed - checks-azure |
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⌛ Testing commit c8c4fd7 with merge d7faca70550a729c2cccc61d3ea0a3f2d51c8fe8... |
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Last try, then I'm going to bed. Keeping the tree closed since clearly there are some CI issues out of our control. (Unlikely to have been caused by this PR since it passed CI a couple times already) |
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💔 Test failed - checks-actions |
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@bors retry |
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☀️ Test successful - checks-actions, checks-azure |
This was referenced Jul 12, 2020
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Successful merges:
transmutein constants and statics but not const fn #72920 (Stabilizetransmutein constants and statics but not const fn)in_band_lifetimesin nightly #74168 (Add a help to usein_band_lifetimesin nightly)selftoken suggestion #74197 (Reword incorrectselftoken suggestion)rustfmtno longer builds after rust-lang/rust#74073 #74081 and add the test case from ICE when printing paths in modules with non-DefId reexports (e.g. NonMacroAttr(Builtin)). #74236)Failed merges:
r? @ghost