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llvm-wrapper: adapt for LLVM API changes
No functional changes intended.
Updates the wrapper for https://github.com/5c4lar/llvm-project/commit/21eddfac3d75879b3e0b09c5bc848526dcab6ab0.
````@rustbot```` label: +llvm-main
r? ````@nikic````
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Add `-Zlint-llvm-ir`
This flag is similar to `-Zverify-llvm-ir` and allows us to lint the generated IR.
r? compiler
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Updates the wrapper for https://github.com/5c4lar/llvm-project/commit/21eddfac3d75879b3e0b09c5bc848526dcab6ab0.
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Implement `-Z embed-source` (DWARFv5 source code embedding extension)
Implement https://github.com/rust-lang/compiler-team/issues/764 MCP which adds an unstable flag that exposes LLVM's [DWARFv5 source code embedding](https://dwarfstd.org/issues/180201.1.html) support.
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No functional changes intended.
Adapts llvm-wrapper for the LLVM commits https://github.com/llvm/llvm-project/commit/0f22d47a7a1f70ec77ea8ccdf08a6487827937db and https://github.com/llvm/llvm-project/commit/d6d8243dcd4ea768549904036ed31b8e59e14c73.
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Support reading thin archives in ArArchiveBuilder
And switch to using ArArchiveBuilder with the LLVM backend too now that all regressions are fixed.
Fixes https://github.com/rust-lang/rust/issues/107407
Fixes https://github.com/rust-lang/rust/issues/107162
https://github.com/rust-lang/rust/issues/107495 has been fixed in a previous PR already.
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Disable the tests and generate an error if MC/DC is used on LLVM 19.
The support will be ported separately, as it is substantially
different on LLVM 19, and there are no plans to support both
versions.
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See llvm/llvm-project#98505
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Sync ar_archive_writer to LLVM 18.1.3
From LLVM 15.0.0-rc3. This adds support for COFF archives containing Arm64EC object files and has various fixes for AIX big archive files.
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The return value changed from an Instruction to a DbgRecord in
LLVM 19. As we don't actually use the result, drop the return
value entirely to support both.
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From LLVM 15.0.0-rc3. This adds support for COFF archives containing
Arm64EC object files and has various fixes for AIX big archive files.
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Since this codegen flag now only controls LLVM-generated comments rather than
all assembly comments, make the name more accurate (and also match Clang).
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If we don't do this, some versions of LLVM (at least 17, experimentally)
will double-emit some error messages, which is how I noticed this. Given
that it seems to be costing some extra work, let's only request the
summary bitcode production if we'll actually bother writing it down,
otherwise skip it.
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Typical uses of ThinLTO don't have any use for this as a standalone
file, but distributed ThinLTO uses this to make the linker phase more
efficient. With clang you'd do something like `clang -flto=thin
-fthin-link-bitcode=foo.indexing.o -c foo.c` and then get both foo.o
(full of bitcode) and foo.indexing.o (just the summary or index part of
the bitcode). That's then usable by a two-stage linking process that's
more friendly to distributed build systems like bazel, which is why I'm
working on this area.
I talked some to @teresajohnson about naming in this area, as things
seem to be a little confused between various blog posts and build
systems. "bitcode index" and "bitcode summary" tend to be a little too
ambiguous, and she tends to use "thin link bitcode" and "minimized
bitcode" (which matches the descriptions in LLVM). Since the clang
option is thin-link-bitcode, I went with that to try and not add a new
spelling in the world.
Per @dtolnay, you can work around the lack of this by using `lld
--thinlto-index-only` to do the indexing on regular .o files of
bitcode, but that is a bit wasteful on actions when we already have all
the information in rustc and could just write out the matching minimized
bitcode. I didn't test that at all in our infrastructure, because by the
time I learned that I already had this patch largely written.
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Set writable and dead_on_unwind attributes for sret arguments
Set the `writable` and `dead_on_unwind` attributes for `sret` arguments. This allows call slot optimization to remove more memcpy's.
See https://llvm.org/docs/LangRef.html#parameter-attributes for the specification of these attributes. In short, the statement we're making here is that:
* The return slot is writable.
* The return slot will not be read if the function unwinds.
Fixes https://github.com/rust-lang/rust/issues/90595.
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llvm RustWrapper: explain OpBundlesIndirect argument type
Follow-up to https://github.com/rust-lang/rust/pull/123941
r? ``@Mark-Simulacrum``
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Rust passes a *const &OperandBundleDef to these APIs, usually from a
Vec<&OperandBundleDef> or so. Previously we were dereferencing that
pointer and passing it to the ArrayRef constructor with some length (N).
This meant that if the length was 0, we were dereferencing a pointer to
nowhere, and if the length was >1 then loading the *second* element
somewhere in LLVM would've been reading past the end.
Since Rust can't hold OperandBundleDef by-value we're forced to indirect
through a vector that copies out the OperandBundleDefs from the
by-reference list on the Rust side in order to match the LLVM expected
API.
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Set target-abi module flag for RISC-V targets
Fixes cross-language LTO on RISC-V targets (Fixes #121924)
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Instead of creating a cstring.
Co-authored-by: LoveSy <shana@zju.edu.cn>
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Fixes cross-language LTO on RISC-V targets (Fixes #121924)
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Remove unnecessary cast from `LLVMRustGetInstrProfIncrementIntrinsic`
(Noticed while reviewing #123409.)
This particular cast appears to have been copied over from clang, but there are plenty of other call sites in clang that don't bother with a cast here, and it works fine without one.
For context, `llvm::Intrinsic::ID` is a typedef for `unsigned`, and `llvm::Intrinsic::instrprof_increment` is a member of `enum IndependentIntrinsics : unsigned`.
---
The formatting change in `unwrap(M)` is the result of manually running `clang-format` on this file, and then reverting all changes other than the ones affecting these lines.
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Add consistency with phrases "meantime" and "mean time"
"mean time" is used in a few places while "meantime" is used everywhere else; this would make usage consistent throughout the codebase.
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This particular cast appears to have been copied over from clang, but there are
plenty of other call sites in clang that don't bother with a cast here, and it
works fine without one.
For context, `llvm::Intrinsic::ID` is a typedef for `unsigned`, and
`llvm::Intrinsic::instrprof_increment` is a member of
`enum IndependentIntrinsics : unsigned`.
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Manually run `clang-format` on `CoverageMappingWrapper.cpp`
In the current version of #123409, there are several unrelated changes to `CoverageMappingWrapper.cpp` that seem to be the result of running `clang-format` on that file.
Instead of asking for those changes to be undone, I figure it's easier to just make them myself as a separate PR, since I was vaguely intending to do that at some point anyway.
In a few cases I've strategically added comments to make the grouping of parameters a little nicer, but mostly it doesn't matter much.
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llvm/llvm-project@44d037cc258dcf179d2c48c93996bb406ecd0fae
Easy change.
@rustbot label: +llvm-main
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The bad-alloc installer was incorrectly asserting that the other handler
isn't set yet, instead of checking its own, but we can avoid that by
changing the order we install them.
Ref: https://github.com/llvm/llvm-project/issues/83040
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LLVM's default bad-alloc handler may throw if exceptions are enabled,
and `operator new` isn't hooked at all by default. Now we register our
own handler that prints a message similar to fatal errors, then aborts.
We also call the function that registers the C++ `std::new_handler`.
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Adapts rust for https://github.com/llvm/llvm-project/commit/9997e0397156ff7e01aecbd17bdeb7bfe5fb15b0.
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PassWrapper: update for llvm/llvm-project@a3319371970b
``@rustbot`` label: +llvm-main
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