Thread overview
LDC 1.2.0-beta2 has been released!
Apr 05
Kai Nacke
Apr 06
kinke
April 05
Hi everyone!

On behalf of the LDC team I announce the new 1.2.0-beta2 release!
It is based on the 2.072.2 front-end and supports LLVM 3.5-4.0.

This beta release contains some important fixes. Be sure to read the change log at the GitHub release page for details. The packages are available for download at the same page.
https://github.com/ldc-developers/ldc/releases/tag/v1.2.0-beta2

MD5 checksums for the release packages:

ae6284edc8d170bfffdc8a01171ba2a3  ldc-1.2.0-beta2-src.tar.gz
98a4541599f8ffec045c72c2af9041d4  ldc2-1.2.0-beta2-freebsd-x86_64.tar.xz
d88b49468de4ae8acdbc5cf4d92037c9  ldc2-1.2.0-beta2-linux-x86.tar.xz
3f67d08657e495ffe62e7d039b9711bd  ldc2-1.2.0-beta2-linux-x86_64.tar.xz
5248d5c272252af5c966a687b4d0226c  ldc2-1.2.0-beta2-osx-x86_64.tar.xz
93995b85d056f9069dc1cb132e8bf332  ldc2-1.2.0-beta2-win32-msvc.zip
02f10dc4c33ccfa3dbd046b8a131c1df  ldc2-1.2.0-beta2-win64-msvc.zip

Regarding the binaries:
The Linux x86/x86_64 binaries are built on Ubuntu 12.04 LTS with gcc 4.8.x, ldc2 1.2.0-beta2 and LLVM 4.0.0. They work on Ubuntu 12.04 LTS (or later) without installing additional software.

The OS X binaries and the FreeBSD binaries are built with LLVM 4.0.0.

The Win32 and Win64 MSVC versions are built with VS2015 and LLVM 3.9.1 (due to a regression in LLVM 4.0).

Please be sure to report any bugs at https://github.com/ldc-developers/ldc/issues, and feel free to drop by at the digitalmars.D.ldc forums (http://forum.dlang.org/group/digitalmars.D.ldc) for any questions or comments.

Thanks to everybody involved in making this happen!

Regards,
Kai

April 05
On Wednesday, 5 April 2017 at 03:57:19 UTC, Kai Nacke wrote:
> 
> ... binaries are built with LLVM 4.0.0.

With the large performance regression for mir [1], are we OK with building the release binaries with LLVM 4.0, or shall we use LLVM 3.9?

Cheers,
  Johan

[1] https://github.com/libmir/mir-glas/issues/18
April 06
On Wednesday, 5 April 2017 at 21:59:22 UTC, Johan Engelen wrote:
> With the large performance regression for mir [1], are we OK with building the release binaries with LLVM 4.0, or shall we use LLVM 3.9?
>
> Cheers,
>   Johan
>
> [1] https://github.com/libmir/mir-glas/issues/18

Hmm don't know, that's just *one* runtime performance regression. There are also cases where 4.0 brings a speed-up by 150% compared to 3.9.1, see the results for SciMark2 here for example: http://www.phoronix.com/scan.php?page=article&item=gcc7-clang4-jan&num=3
(I guess the fix isn't on the Clang side, but on LLVM's).
April 06
On 6 Apr 2017, at 15:52, kinke via digitalmars-d-ldc wrote:
> Hmm don't know, that's just *one* runtime performance regression. There are also cases where 4.0 brings a speed-up by 150% compared to 3.9.1, see the results for SciMark2 here for example: http://www.phoronix.com/scan.php?page=article&item=gcc7-clang4-jan&num=3
> (I guess the fix isn't on the Clang side, but on LLVM's).

Agreed; if Ilya's example is just register allocation going slightly wrong in a single microkernel, it's probably not a major issue (albeit, of course, an annoying regression that shouldn't have happened). It would still be nice to have confirmation about what is going on here, though.

 — David