LLVMPtr's address space annotation is lost with opaque pointers

[maleadt]

MWE:

using InteractiveUtils
using Core: LLVMPtr

@inline passthrough(ptr::LLVMPtr{T,A}) where {T,A} = Base.llvmcall(("""
        define ptr addrspace(1) @entry(ptr addrspace(1) %0) #0 {
        entry:
            ret ptr addrspace(1) %0
        }

        attributes #0 = { alwaysinline }""", "entry"),
    LLVMPtr{T,A}, Tuple{LLVMPtr{T,A}}, ptr)

f(gws) = passthrough(reinterpret(LLVMPtr{UInt32,1}, gws))

code_llvm(f, Tuple{Ptr{Nothing}})

julia-debug: /workspace/srcdir/llvm-project/llvm/lib/IR/Instructions.cpp:652: void llvm::CallInst::init(llvm::FunctionType*, llvm::Value*, llvm::ArrayRef<llvm::Value*>, llvm::ArrayRef<llvm::OperandBundleDefT<llvm::Value*> >, const llvm::Twine&): Assertion `(i >= FTy->getNumParams() || FTy->getParamType(i) == Args[i]->getType()) && "Calling a function with a bad signature!"' failed.

Looks like we're somehow losing the address space property of the LLVMPtr when its bitcasted:

(rr) call jl_(ctx.code )
Array{Any, 1}(dims=(4,), mem=Memory{Any}(4, 0x7493e013fea0)[
  Expr(:call, Base.bitcast, Core.LLVMPtr{UInt32, 1}, Core.Argument(n=2)),
  Expr(:call, Core.tuple, "define ptr addrspace(1) @entry(ptr addrspace(1) %0) #0 {\nentry:\n    ret ptr addrspace(1) %0\n}\n\nattributes #0 = { alwaysinline }", "entry"),
  Expr(:call, Base.llvmcall, SSAValue(2), Core.LLVMPtr{UInt32, 1}, Tuple{Core.LLVMPtr{UInt32, 1}}, SSAValue(1)),
  Core.ReturnNode(val=SSAValue(3))])

(rr)
837	        jl_value_t *argi = args[4 + i];
(rr) call jl_(argi)
SSAValue(1)

(rr)
838	        jl_cgval_t arg = emit_expr(ctx, argi);
(rr) call arg.V->dump()
ptr %"gws::Ptr"

IR looks fine:

13 1 ─ %1 = Core.bitcast(LLVMPtr{UInt32, 1}, _2)::LLVMPtr{UInt32, 1}
   │   %2 = Core.tuple("define ptr addrspace(1) @entry(ptr addrspace(1) %0) #0 {\nentry:\n    ret ptr addrspace(1) %0\n}\n\nattributes #0 = { alwaysinline }", "entry")::Tuple{String, String}
   │   %3 = Base.llvmcall(%2, LLVMPtr{UInt32, 1}, Tuple{LLVMPtr{UInt32, 1}}, %1)::LLVMPtr{UInt32, 1}
   └──      return %3                                          ││
    => LLVMPtr{UInt32, 1}