Bump LLVM to v18

[Zentrik]

No description provided.

[Zentrik]

Bit confused why windows won't start building

[giordano]

I think there's something broken with the CI setup. CC: @staticfloat

[gbaraldi]

This fixes the llvmpasses tests

diff --git a/test/llvmpasses/pipeline-prints.ll b/test/llvmpasses/pipeline-prints.ll
index babd26c797..ecb7095302 100644
--- a/test/llvmpasses/pipeline-prints.ll
+++ b/test/llvmpasses/pipeline-prints.ll
@@ -298,12 +298,12 @@ attributes #2 = { inaccessiblemem_or_argmemonly }

 ; COM: Loop simplification makes the exit condition obvious
 ; AFTERLOOPSIMPLIFICATION: L35.lr.ph:
-; AFTERLOOPSIMPLIFICATION-NEXT: add nuw nsw
+; AFTERLOOPSIMPLIFICATION: add nuw nsw

 ; COM: Scalar optimization removes the previous add from the preheader
-; AFTERSCALAROPTIMIZATION: L35.preheader:
+; AFTERSCALAROPTIMIZATION: L35.lr.ph:
 ; AFTERSCALAROPTIMIZATION-NOT: add nuw nsw
-; AFTERSCALAROPTIMIZATION-NEXT: br label %L35
+; AFTERSCALAROPTIMIZATION: br label %L35

 ; COM: Vectorization does stuff
 ; AFTERVECTORIZATION: vector.body

[vtjnash]

llvm/llvm-project#78251

[gbaraldi]

The windows build is segfaulting in

#0  0x00007ff8e4f70de5 in ntdll!RtlVirtualUnwind () from /c/Windows/SYSTEM32/ntdll.dll
#1  0x00007ff8e4f70ccb in ntdll!RtlVirtualUnwind () from /c/Windows/SYSTEM32/ntdll.dll
#2  0x00007ff8e3ee3bd8 in RtlVirtualUnwind () from /c/Windows/System32/KERNEL32.DLL
#3  0x00007ff8bb29cfed in jl_unw_step (cursor=0xba5690, from_signal_handler=0, ip=<synthetic pointer>,
    sp=<synthetic pointer>) at C:/msys64/home/vboxuser/julia/src/stackwalk.c:523
#4  jl_unw_stepn (cursor=cursor@entry=0xba5690, bt_data=bt_data@entry=0x42b0080, bt_size=bt_size@entry=0xba51b8,
    sp=sp@entry=0x0, maxsize=maxsize@entry=80000, skip=0, skip@entry=3, ppgcstack=ppgcstack@entry=0xba51b0,
    from_signal_handler=from_signal_handler@entry=0) at C:/msys64/home/vboxuser/julia/src/stackwalk.c:99
#5  0x00007ff8bb29d752 in rec_backtrace (bt_data=0x42b0080, maxsize=maxsize@entry=80000, skip=skip@entry=2)
    at C:/msys64/home/vboxuser/julia/src/stackwalk.c:222
#6  0x00007ff8bb264313 in record_backtrace (ptls=0x3d71d10, skip=skip@entry=1)
    at C:/msys64/home/vboxuser/julia/src/task.c:412
#7  0x00007ff8bb264a85 in ijl_throw (e=0x13b7c0c0) at C:/msys64/home/vboxuser/julia/src/task.c:771
#8  0x00007ff8bb2cfdb9 in ijl_errorf (
    fmt=fmt@entry=0x7ff8bb482178 <flisp_system_image+362104> "Type %s does not have a definite size.")
    at C:/msys64/home/vboxuser/julia/src/rtutils.c:77
#9  0x00007ff8bb24d3a8 in jl_f_sizeof (F=<optimized out>, args=<optimized out>, nargs=<optimized out>)
    at C:/msys64/home/vboxuser/julia/src/builtins.c:531

[giordano]

Was libllvm_jll updated to 18.1.7+2? That includes llvm/llvm-project#88172 which should fix WIndows issues according to JuliaLang/llvm-project#30 (comment).

[gbaraldi]

This doesn't have the new LLVM build yet. I was fixing the embedding thing mostly

[Zentrik]

Oops, 64 bit windows builds on the branch with head Zentrik/llvm-project@b557165 not with JuliaLang/llvm-project#30.

EDIT: These are the changes, JuliaLang/llvm-project@julia-release/18.x...Zentrik:llvm-project:windows-fix3. I just reverted a bunch of commits.

[gbaraldi]

Do we know which one broke it?

[Zentrik]

I have no clue.