Invalid IR emission

[wsmoses]

cc @gbaraldi @vchuravy

see https://gist.github.com/wsmoses/24612bacdde789a9661a708433962ae5

in particular see:

oob:                                              ; preds = %L15
; └
; ┌ @ essentials.jl:917 within `getindex`
   %"+Core.GenericMemoryRef#754" = load ptr, ptr @"+Core.GenericMemoryRef#754", align 8, !dbg !56, !tbaa !27, !invariant.load !0, !alias.scope !34, !noalias !37, !nonnull !0, !dereferenceable !86, !align !62
   %GenericMemoryRef = ptrtoint ptr %"+Core.GenericMemoryRef#754" to i64, !dbg !56
   %149 = inttoptr i64 %GenericMemoryRef to ptr, !dbg !56
   %current_task6 = getelementptr inbounds ptr, ptr %pgcstack, i64 -14, !dbg !56
   %150 = addrspacecast ptr %149 to ptr addrspace(10), !dbg !56
   %"box::GenericMemoryRef" = call noalias nonnull align 8 dereferenceable(16) ptr addrspace(10) @julia.gc_alloc_obj(ptr %current_task6, i64 16, ptr addrspace(10) %150) #10, !dbg !56
   store { ptr, ptr addrspace(10) } %.ref, ptr addrspace(10) %"box::GenericMemoryRef", align 8, !dbg !56, !tbaa !87, !alias.scope !91, !noalias !92
   %151 = addrspacecast ptr addrspace(10) %"box::GenericMemoryRef" to ptr addrspace(12), !dbg !56
   call void @ijl_bounds_error_int(ptr addrspace(12) %151, i64 %"i::Int64"), !dbg !56
   unreachable, !dbg !56

and

   store { ptr, ptr addrspace(10) } %.ref, ptr addrspace(10) %"box::GenericMemoryRef", align 8, !dbg !56, !tbaa !87, !alias.scope !91, !noalias !92

where the store is being done on addrspace 10, not addrspace 11

eventually when this runs through various opt passes, it ends up as

  %.repack35 = getelementptr inbounds { i8*, {} addrspace(10)* }, { i8*, {} addrspace(10)* } addrspace(10)* %77, i64 0, i32 1, !dbg !196                                                                                                                                                                                                                                                                                                     

triggering an assertion

[wsmoses]

test case is simply:

(base) wmoses@160 ~ % julia +1.11 --check-bounds=yes
The latest version of Julia in the `1.11` channel is 1.11.6+0.aarch64.apple.darwin14. You currently have `1.11.5+0.aarch64.apple.darwin14` installed. Run:

  juliaup update

in your terminal shell to install Julia 1.11.6+0.aarch64.apple.darwin14 and update the `1.11` channel to that version.
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.11.5 (2025-04-14)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> function bf(i, x)
         x[i] *= x[i]
         nothing
       end
bf (generic function with 1 method)

julia> @code_llvm optimize=false raw=true dump_module=true bf(1, [1.0])

[vtjnash]

n.b. fixed incidentally on master by #55767 by change to using emit_unbox_store API instead of reimplementing it directly