Bug#919628: Apply Julia's LLVM patches

[Mo Zhou]

Hi Sylvestre,

Should I file freeze exception requests against llvm-6.0 and julia,
so that we will have some more time to work on this?

On Fri, Feb 22, 2019 at 08:41:14AM +0100, Sylvestre Ledru wrote:
> Hello,
> 
> I started the work ( https://salsa.debian.org/pkg-llvm-team/llvm-toolchain/commit/408f329cd84ad41cef7fc41ee4ac2b4b4573945f
> ) on that but:
> 
> * some patches didn't apply
> 
> * some are breaking the builds
> 
> I will try to finish this week end
> 
> Anyway, this should not prevent you to move back to llvm packages as
> 
> I took this fix  "Fix a baseline violation on armhf (Closes: #914268)"
> 
> Cheers,
> 
> S
> 
> 
> Le 22/02/2019 à 00:55, Mo Zhou a écrit :
> > Hi Sylvestre,
> > 
> > Any chance for getting this into Buster? If there is any, I'd like
> > to apply for freeze exception early, especially for the next Julia
> > LTS release 1.0.4 (likely to come out before 1st March)
> > 
> > On Fri, Feb 08, 2019 at 08:46:06AM +0100, Sylvestre Ledru wrote:
> > > Wahou, better than I was expecting! Many thanks!
> > > 
> > > I will take as much as possible! Thanks
> > > 
> > > S
> > > 
> > > 
> > > Le 08/02/2019 à 07:47, Mo Zhou a écrit :
> > > > Hi Sylvestre,
> > > > 
> > > > Please cherry-pick at least: (8) (12) (13) (14) (15)
> > > > 
> > > > Recommended to include: (1) (2) (4) (5) (11)
> > > > 
> > > > Feel free to ignore: (6) (9) (16) (17)
> > > > 
> > > > I have no idea about: (3) (7) (10)
> > > > 
> > > > https://github.com/JuliaLang/julia/tree/master/deps/patches
> > > > I've listed patches for llvm 6.0.1
> > > > 
> > > > ========================================================
> > > > 
> > > > 
> > > > (1) [unwind] llvm-D27629-AArch64-large_model_6.0.1
> > > > 
> > > >       Fix unwind info relocation with large code model on AArch64
> > > >       https://reviews.llvm.org/D27629
> > > > 
> > > > (2) [performance] llvm-D34078-vectorize-fdiv
> > > > 
> > > >       Enable support for floating-point division reductions
> > > >       https://reviews.llvm.org/D34078
> > > > 
> > > > (3) [nvptx] llvm-6.0-NVPTX-addrspaces
> > > > 
> > > >       No idea about this patch.
> > > > 
> > > > (4) [performance regression] llvm-D42262-jumpthreading-not-i1
> > > > 
> > > >       For details see Julia commit: e94a1f8b08e0bc3b8093d8f1dc2bf3c8f5d59519
> > > >       merged upstream: https://reviews.llvm.org/D42262
> > > > 
> > > > (5) [???] llvm-PPC-addrspaces
> > > > 
> > > >       merged upstream: https://reviews.llvm.org/D43781
> > > > 
> > > > (6) [ignore: mingw] llvm-6.0.0_D27296-libssp
> > > >       [ignore: mingw] llvm-6.0-D44650
> > > > 
> > > > (7) [???] llvm-D46460
> > > > 
> > > >       still under review: https://reviews.llvm.org/D46460
> > > > 
> > > > (8) [???] llvm-rL327898
> > > > 
> > > >       https://github.com/JuliaLang/julia/blob/master/deps/patches/llvm-rL327898.patch
> > > >       Fixes Julia issues: #27055 #27080 #27032 #27603
> > > > 
> > > > (9) [ignore: compiler complain] llvm-6.0-DISABLE_ABI_CHECKS
> > > > 
> > > > (10) [profiling] llvm-OProfile-line-num
> > > > 
> > > > (11) [profiling] llvm-D44892-Perf-integration
> > > > 
> > > >        merged upstream: https://reviews.llvm.org/D44892
> > > > 
> > > > (12) [bug fix] llvm-D49832-SCEVPred
> > > >        [bug fix] llvm-rL323946-LSRTy
> > > > 
> > > >       Add LLVM patches for bugs introducing illegal ptrtoint
> > > >       rL323946 [LSR] Don't force bases of foldable formulae to the final type.
> > > >       D49832   [SCEV] Don't expand Wrap predicate using inttoptr in ni addrspaces
> > > > 
> > > > (13) llvm-D50010-VNCoercion-ni
> > > > 
> > > >       Fixes julia issue: #28360 (#28362)
> > > >       https://reviews.llvm.org/D50010
> > > > 
> > > > (14) llvm-D50167-scev-umin
> > > > 
> > > >       Add LLVM patch to explicitly represent umin in SCEV (#28403)
> > > >       Fix mix-type arithmetic detection in umin/max expansion (#28465)
> > > >       Fixes #28464
> > > >       Fixes #28379
> > > >       Fixes #28388
> > > > 
> > > > (15) llvm-rL326967-aligned-load
> > > > 
> > > >       Fixes incorrect codegen: #28726
> > > > 
> > > > (16) [ignore: win64] llvm-D51842-win64-byval-cc
> > > > 
> > > > (17) [...] llvm-D57118-powerpc
> > > > 
> > > >       https://reviews.llvm.org/D57118
> > > >