| Age | Commit message (Collapse) | Author | Lines |
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fast-math flags
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llvm-wrapper/ArchiveWrapper.cpp(70): warning C4305: 'argument': truncation from 'int' to 'bool'
while in llvm 12 signature was
static ErrorOr<std::unique_ptr<MemoryBuffer>> getFile(const Twine &Filename, int64_t FileSize = -1, bool RequiresNullTerminator = true, bool IsVolatile = false);
https://github.com/llvm/llvm-project/blame/fed41342a82f5a3a9201819a82bf7a48313e296b/llvm/include/llvm/Support/MemoryBuffer.h#L85-L87
in llvm 13 and later it was changed to
static ErrorOr<std::unique_ptr<MemoryBuffer>> getFile(const Twine &Filename, bool IsText = false, bool RequiresNullTerminator = true, bool IsVolatile = false);
https://github.com/llvm/llvm-project/blame/75e33f71c2dae584b13a7d1186ae0a038ba98838/llvm/include/llvm/Support/MemoryBuffer.h#L86-L88
so code was interpreted as MemoryBuffer::getFile(Path, /*IsText*/true, /*RequiresNullTerminator=*/false), but now will be MemoryBuffer::getFile(Path, /*IsText*/false, /*RequiresNullTerminator=*/false). How that worked before?
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llvm-wrapper/RustWrapper.cpp(1234): warning C4244: '=': conversion from 'uint64_t' to 'unsigned int', possible loss of data
nice consistency:
uint64_t https://github.com/llvm/llvm-project/blob/6009708b4367171ccdbf4b5905cb6a803753fe18/llvm/include/llvm/IR/DiagnosticInfo.h#L172
but unsigned https://github.com/llvm/llvm-project/blob/6009708b4367171ccdbf4b5905cb6a803753fe18/llvm/include/llvm/IR/DiagnosticInfo.h#L1091
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Rollup of 8 pull requests
Successful merges:
- #114877 (unstable-book: add quick-edit link)
- #120548 (rustdoc: Fix handling of doc_auto_cfg feature for cfg attributes on glob reexport)
- #120549 (modify alias-relate to also normalize ambiguous opaques)
- #120959 (Remove good path delayed bugs)
- #120978 (match lowering: simplify block creation)
- #121019 (coverage: Simplify some parts of the coverage span refiner)
- #121021 (Extend intra-doc link chapter in the rustdoc book)
- #121031 (RustWrapper: adapt for coverage mapping API changes)
Failed merges:
- #121014 (Remove `force_print_diagnostic`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Update to LLVM 18
LLVM 18 final is planned to be released on Mar 5th. Rust 1.78 is planned to be released on May 2nd.
Tested images: dist-x86_64-linux, dist-s390x-linux, dist-aarch64-linux, dist-riscv64-linux, dist-loongarch64-linux, dist-x86_64-freebsd, dist-x86_64-illumos, dist-x86_64-musl, x86_64-linux-integration, test-various, armhf-gnu, i686-msvc, x86_64-msvc, i686-mingw, x86_64-mingw, x86_64-apple-1, x86_64-apple-2, dist-aarch64-apple
r? `@ghost`
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This method is now available in upstream LLVM \o/
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PassWrapper: adapt for llvm/llvm-project@93cdd1b5cfa3735c
Should be no functional change.
`@rustbot` label: +llvm-main
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llvm/llvm-project@93cdd1b5cfa3735c599949b77e24dbfbe570441a
Should be no functional change.
@rustbot label: +llvm-main
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Adapt for llvm/llvm-project@8f23464.
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Invert diagnostic lints.
That is, change `diagnostic_outside_of_impl` and `untranslatable_diagnostic` from `allow` to `deny`, because more than half of the compiler has been converted to use translated diagnostics.
This commit removes more `deny` attributes than it adds `allow` attributes, which proves that this change is warranted.
r? ````@davidtwco````
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Remove `ffi_returns_twice` feature
The [tracking issue](https://github.com/rust-lang/rust/issues/58314) and [RFC](https://github.com/rust-lang/rfcs/pull/2633) have been closed for a couple of years.
There is also an attribute gate in R-A which should be removed if this lands.
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effectively reverts https://github.com/rust-lang/rust/commit/9a8acea78355b604dbeb29bc38bd4dbf7bfce95f
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That is, change `diagnostic_outside_of_impl` and
`untranslatable_diagnostic` from `allow` to `deny`, because more than
half of the compiler has be converted to use translated diagnostics.
This commit removes more `deny` attributes than it adds `allow`
attributes, which proves that this change is warranted.
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This reverts commit 8c2b57721728233e074db69d93517614de338055, reversing
changes made to 9cf18e98f82d85fa41141391d54485b8747da46f.
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llvm-wrapper: adapt for LLVM API changes
Adapt for https://github.com/llvm/llvm-project/commit/8ecbb0404d740d1ab173554e47cef39cd5e3ef8c.
r? `@nikic`
`@rustbot` label: +llvm-main
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Adapt for https://github.com/llvm/llvm-project/commit/8ecbb0404d740d1ab173554e47cef39cd5e3ef8c.
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Use the LLVM option NoTrapAfterNoreturn
Use this LLVM option: https://llvm.org/doxygen/classllvm_1_1TargetOptions.html#acd83fce25de1ac9f6c975135a8235c22 when TrapUnreachable is enabled. This prevents codegenning unnecessary double-traps in some situations.
See further discussion here: https://github.com/rust-lang/compiler-team/issues/618
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LLVM commit https://github.com/llvm/llvm-project/commit/f09cf34d00625e57dea5317a3ac0412c07292148 moved some functions to a different header:
https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/24416#018c5de6-b9c9-4b22-9473-6070d99dcfa7/233-537
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fix: stop emitting `.debug_pubnames` and `.debug_pubtypes`
A continuation of #94181.
Fixes #48762
MCP can be found in <https://github.com/rust-lang/compiler-team/issues/688>.
`.debug_pubnames` and `.debug_pubtypes` are poorly designed and people
seldom use them. However, they take a considerable portion of size in
the final binary. This tells LLVM stop emitting those sections on
DWARFv4 or lower. DWARFv5 use `.debug_names` which is more concise
in size and performant for name lookup.
Some other no-really-useful personal notes:
<details><summary>Details</summary>
<p>
## Pepole saying they are not useful
* https://github.com/rust-lang/rust/issues/48762
* https://rust-lang.zulipchat.com/#narrow/stream/317568-t-compiler.2Fwg-debugging/topic/investigating.20debuginfo.20size/near/342713604
* `DwarfCompileUnit::hasDwarfPubSections()` — https://github.com/llvm/llvm-project/blob/f633f325a1b808d33ca9653ed373353549ddcde6/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp#L1477-L1494
* clang default to no debug name table when no option provided — https://github.com/llvm/llvm-project/blob/f633f325a1b808d33ca9653ed373353549ddcde6/clang/lib/Frontend/CompilerInvocation.cpp#L1819-L1824
* GCC explicitly says GDB doesn't use pub sections (`TARGET_WANT_DEBUG_PUB_SECTIONS` only be true on Darwin) — https://github.com/gcc-mirror/gcc/blob/5d2a360f0a541646abb11efdbabc33c6a04de7ee/gcc/target.def#L6985-L6990 and https://github.com/bminor/binutils-gdb/blob/319b460545dc79280e2904dcc280057cf71fb753/gold/dwarf_reader.h#L424-L427
* Probably the only place that makes use of pub section in lldb — https://github.com/llvm/llvm-project/blob/725115d7bba2faf3d0c21442f4661dea77b8a77c/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp#L2117-L2135
* "The -gsplit-dwarf option requires -ggnu-pubnames." — https://github.com/gcc-mirror/gcc/blob/5d2a360f0a541646abb11efdbabc33c6a04de7ee/gcc/opts.cc#L1205
* LLVM: Always emit `.debug_names` with dwarf 5 for Apple platforms — https://reviews.llvm.org/D118754
</p>
</details>
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`.debug_pubnames` and `.debug_pubtypes` are poorly designed and people
seldom use them. However, they take a considerable portion of size in
the final binary. This tells LLVM stop emitting those sections on
DWARFv4 or lower. DWARFv5 use `.debug_names` which is more concise
in size and performant for name lookup.
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LLVM commit https://github.com/llvm/llvm-project/commit/1d608fc755a3e15d0020f61c9535c9b730ab9dec
renamed the pass.
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Add emulated TLS support
This is a reopen of https://github.com/rust-lang/rust/pull/96317 . many android devices still only use 128 pthread keys, so using emutls can be helpful.
Currently LLVM uses emutls by default for some targets (such as android, openbsd), but rust does not use it, because `has_thread_local` is false.
This commit has some changes to allow users to enable emutls:
1. add `-Zhas-thread-local` flag to specify that std uses `#[thread_local]` instead of pthread key.
2. when using emutls, decorate symbol names to find thread local symbol correctly.
3. change `-Zforce-emulated-tls` to `-Ztls-model=emulated` to explicitly specify whether to generate emutls.
r? `@Amanieu`
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Suppress warnings in LLVM wrapper when targeting MSVC
The LLVM header files generate many warnings when compiled using MSVC. This makes it difficult to work on the LLVM wrapper code, because the warnings and errors that are relevant to local edits are obscured by the hundreds of lines of warnings from the LLVM Headers.
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Currently LLVM uses emutls by default
for some targets (such as android, openbsd),
but rust does not use it, because `has_thread_local` is false.
This commit has some changes to allow users to enable emutls:
1. add `-Zhas-thread-local` flag to specify
that std uses `#[thread_local]` instead of pthread key.
2. when using emutls, decorate symbol names
to find thread local symbol correctly.
3. change `-Zforce-emulated-tls` to `-Ztls-model=emulated`
to explicitly specify whether to generate emutls.
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Restore `#![no_builtins]` crates participation in LTO.
After #113716, we can make `#![no_builtins]` crates participate in LTO again.
`#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again.
Fixes #72140. Fixes #112245. Fixes #110606. Fixes #105734. Fixes #96486. Fixes #108853. Fixes #108893. Fixes #78744. Fixes #91158. Fixes https://github.com/rust-lang/cargo/issues/10118. Fixes https://github.com/rust-lang/compiler-builtins/issues/347.
The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears.
Some issues were not tested due to the difficulty of reproducing them.
r? pnkfelix
cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
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This is intended to be used for Linux kernel RETHUNK builds.
With this commit (optionally backported to Rust 1.73.0), plus a
patched Linux kernel to pass the flag, I get a RETHUNK build with
Rust enabled that is `objtool`-warning-free and is able to boot in
QEMU and load a sample Rust kernel module.
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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Update the minimum external LLVM to 16.
With this change, we'll have stable support for LLVM 16 and 17.
For reference, the previous increase to LLVM 15 was #114148
[Relevant zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/riscv.20forced-atomics)
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Bootstrap bump
Bumps bootstrap compiler to just-released beta.
https://forge.rust-lang.org/release/process.html#master-bootstrap-update-t-2-day-tuesday
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llvm-wrapper: Pass newly added param to DIBuilder::createStaticMemberType()
This was added in https://github.com/llvm/llvm-project/pull/72234.
DW_TAG_member was the implicit default before.
The LLVM change is quite sinister since due to weakly typed ints and default params, this was still successfully compiling against LLVM but was passing the wrong parameters.
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Added in LLVM in https://github.com/llvm/llvm-project/pull/72011.
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This was added in https://github.com/llvm/llvm-project/pull/72234.
DW_TAG_member was the implicit default before.
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rustc_llvm: Link to libkstat on Solaris/SPARC
getHostCPUName calls into libkstat but as of
LLVM 16.0.6 libLLVMTargetParser is not explicitly
linked against libkstat causing builds to fail
due to undefined symbols.
See also: llvm/llvm-project#64186
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