rust/src/rustllvm
Nikita Popov cbf748993f Enable -mergefunc-use-aliases
If the Rust LLVM fork is used, enable the -mergefunc-use-aliases
flag, which will create aliases for merged functions, rather than
inserting a call from one to the other.

A number of codegen tests needed to be adjusted, because functions
that previously fell below the thunk limit are now being merged.
Merging is prevented either using -C no-prepopulate-passes, or by
making the functions non-identical.

I expect that this is going to break something, somewhere, because
it isn't able to deal with aliases properly, but we won't find out
until we try :)

This fixes #52651.
2018-11-30 00:52:16 +01:00
..
.editorconfig Add .editorconfig to src/rustllvm 2017-06-30 23:13:40 +03:00
ArchiveWrapper.cpp Remove support for building against LLVM 4 2018-11-05 15:04:26 +01:00
Linker.cpp Remove checks for LLVM < 4.0 2018-11-01 21:09:02 +01:00
llvm-rebuild-trigger Update LLVM 2018-11-28 16:13:40 +01:00
PassWrapper.cpp Enable -mergefunc-use-aliases 2018-11-30 00:52:16 +01:00
README audit LLVM C++ types in ArchiveWrapper and PassWrapper 2016-08-03 15:08:47 +03:00
rustllvm.h Remove checks for LLVM < 4.0 2018-11-01 21:09:02 +01:00
RustWrapper.cpp Enable -mergefunc-use-aliases 2018-11-30 00:52:16 +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.