rust/src/rustllvm
Gabriel Majeri 6009da0794 Support for disabling the PLT on ELF targets
Disable the PLT where possible to improve performance
for indirect calls into shared libraries.

This optimization is enabled by default where possible.

- Add the `NonLazyBind` attribute to `rustllvm`:
  This attribute informs LLVM to skip PLT calls in codegen.

- Disable PLT unconditionally:
  Apply the `NonLazyBind` attribute on every function.

- Only enable no-plt when full relro is enabled:
  Ensures we only enable it when we have linker support.

- Add `-Z plt` as a compiler option
2018-10-11 21:11:00 +03:00
..
.editorconfig Add .editorconfig to src/rustllvm 2017-06-30 23:13:40 +03:00
ArchiveWrapper.cpp rustc_llvm: move to rustc_codegen_llvm::llvm. 2018-07-30 18:03:50 +03:00
Linker.cpp rustc: Persist LLVM's Linker in Fat LTO 2018-02-12 09:11:06 -08:00
llvm-rebuild-trigger Update LLVM to fix "bool" arguments on PPC32 2018-09-16 04:33:58 +08:00
PassWrapper.cpp add -Z emit-stack-sizes 2018-09-26 15:21:26 +02:00
README audit LLVM C++ types in ArchiveWrapper and PassWrapper 2016-08-03 15:08:47 +03:00
rustllvm.h Support for disabling the PLT on ELF targets 2018-10-11 21:11:00 +03:00
RustWrapper.cpp Support for disabling the PLT on ELF targets 2018-10-11 21:11:00 +03:00

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.