rust/compiler/rustc_llvm/llvm-wrapper
bors 284f94f9c0 Auto merge of #121298 - nikic:writable, r=cuviper
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.
2024-04-25 04:31:56 +00:00
..
.editorconfig
ArchiveWrapper.cpp Add support for Arm64EC to the Standard Library 2024-04-15 16:05:16 -07:00
CoverageMappingWrapper.cpp coverage. Generate Mappings of decisions and conditions for MC/DC 2024-04-19 17:09:26 +08:00
Linker.cpp suppress warnings on msvc 2023-11-22 09:10:53 -08:00
LLVMWrapper.h Set writable and dead_on_unwind attributes for sret arguments 2024-04-25 11:43:47 +09:00
PassWrapper.cpp Update the minimum external LLVM to 17 2024-03-17 10:11:04 -07:00
README
RustWrapper.cpp Auto merge of #121298 - nikic:writable, r=cuviper 2024-04-25 04:31:56 +00:00
SuppressLLVMWarnings.h fix long lines 2023-11-22 10:17:50 -08:00
SymbolWrapper.cpp Explicitly assign constructed C++ classes 2024-03-05 21:15:56 -08:00

This directory currently contains some LLVM support code. This will generally
be sent upstream to LLVM in time; for now it lives here.

NOTE: the LLVM C++ ABI is subject to between-version breakage and must *never*
be exposed to Rust. To allow for easy auditing of that, all Rust-exposed types
must be typedef-ed as "LLVMXyz", or "LLVMRustXyz" if they were defined here.

Functions that return a failure status and leave the error in
the LLVM last error should return an LLVMRustResult rather than an
int or anything to avoid confusion.

When translating enums, add a single `Other` variant as the first
one to allow for new variants to be added. It should abort when used
as an input.

All other types must not be typedef-ed as such.