Merge pull request JuliaLang#38424 from JuliaLang/tb/inttoptr_as

Don't create invalid bitcasts.

src/codegen.cpp

@@ -1214,8 +1214,13 @@ static Value *emit_inttoptr(jl_codectx_t &ctx, Value *v, Type *ty)
 {
  // Almost all of our inttoptr are generated due to representing `Ptr` with `T_size`
  // in LLVM and most of these integers are generated from `ptrtoint` in the first place.
- if (auto I = dyn_cast<PtrToIntInst>(v))
- return ctx.builder.CreateBitCast(I->getOperand(0), ty);
+ if (auto I = dyn_cast<PtrToIntInst>(v)) {
+ auto ptr = I->getOperand(0);
+ if (ty->getPointerAddressSpace() == ptr->getType()->getPointerAddressSpace())
+ return ctx.builder.CreateBitCast(ptr, ty);
+ else if (ty->getPointerElementType() == ptr->getType()->getPointerElementType())
+ return ctx.builder.CreateAddrSpaceCast(ptr, ty);
+ }
  return ctx.builder.CreateIntToPtr(v, ty);
 }