rust/src/rustllvm
Wesley Wiser f5f86be1d4 Add support for enabling the LLVM time-trace feature
I found this helpful while investigating an LLVM performance issue.
Passing `-Z llvm-time-trace` causes a `llvm_timings.json` file to be
created. This file can be inspected in either the Chrome Profiler tools
or with any other compatible tool like SpeedScope.

More information on the LLVM feature:

- https://aras-p.info/blog/2019/01/16/time-trace-timeline-flame-chart-profiler-for-Clang/

- https://reviews.llvm.org/rL357340
2020-02-01 14:19:17 -05:00
..
.editorconfig
ArchiveWrapper.cpp Handle removal of llvm::make_unique() 2020-01-07 21:28:22 +01:00
Linker.cpp Handle removal of llvm::make_unique() 2020-01-07 21:28:22 +01:00
PassWrapper.cpp Add support for enabling the LLVM time-trace feature 2020-02-01 14:19:17 -05:00
README
rustllvm.h Don't link mcjit/interpreter LLVM components 2019-07-20 17:17:48 +02:00
RustWrapper.cpp Switch to using MaybeAlign APIs 2020-01-07 21:28:22 +01:00

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.