This commit allows building YJIT and ZJIT simultaneously, a "combo
build". Previously, `./configure --enable-yjit --enable-zjit` failed. At
runtime, though, only one of the two can be enabled at a time.
Add a root Cargo workspace that contains both the yjit and zjit crate.
The common Rust build integration mechanisms are factored out into
defs/jit.mk.
Combo YJIT+ZJIT dev builds are supported; if either JIT uses
`--enable-*=dev`, both of them are built in dev mode.
The combo build requires Cargo, but building one JIT at a time with only
rustc in release build remains supported.
https://doc.rust-lang.org/cargo/reference/build-scripts.html#jobserver
> Cargo and `rustc` use the jobserver protocol, developed for GNU
> make, to coordinate concurrency across processes.
Older GNU make used FDs to connect to the jobserver, and needs an
explicit use of `$(MAKE)` variable or `+` prefix to pass the FDs.
I have this as a shell command and Maxime told me that she finds it
useful, too. I tested this on a release build and a dev build.
Note I intentional didn't put `$(Q)` in front of everything so `make`
echos the command it runs.
Rust 1.58.0 unfortunately doesn't provide facilities to control symbol
visibility/presence, but we care about controlling the list of
symbols exported from libruby-static.a and libruby.so.
This commit uses `ld -r` to make a single object out of rustc's
staticlib output, libyjit.a. This moves libyjit.a out of MAINLIBS and adds
libyjit.o into COMMONOBJS, which obviates the code for merging libyjit.a
into libruby-static.a. The odd appearance of libyjit.a in SOLIBS is also
gone.
To filter out symbols we do not want to export on ELF platforms, we use
objcopy after the partial link. On darwin, we supply a symbol list to
the linker which takes care of hiding unprefixed symbols.
[Bug #19255]
Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>
This add support for bmake, which should allow building with
`configure --enable-yjit` for the BSDs. Tested on FreeBSD 13 and
on macOS with `configure MAKE=bmake` on a case-sensitive file system.
It works by including a fragment into the Makefile through the configure
script, similar to common.mk. It uses the always rebuild approach to
keep build system changes minimal.
* YJIT: Show --yjit-stats of railsbench on CI
* YJIT: Use --enable-yjit=dev to see ratio_in_yjit
* YJIT: Show master GitHub URL for quick comparison
* YJIT: Avoid making CI red by a yjit-bench failure
This fails if there are any unused rust-bindgen "allow" entries. For
that target we turn on Rust warnings (there are a lot) and grep for the
ones that correspond to unused allow entries.
I've added check-yjit-bindgen-unused as a dependency of
check-yjit-bindings, so unused allow entries will now fail CI.
This change also removes our single unused allow entry (VM_CALL.*) which
was known to be bad.
