forgetting to make gc frames for simple functions for code reflection

[vtjnash]

In v1.12 I noticed we are not showing the gc frame anymore for simple functions like this which don't end up needing to use ptls anywhere and don't have the swiftself argument. I suspect it is an interaction with removing ptls in codgen (when we already have swiftself) and skipping gc rooting in functions without either that or swiftself:

julia> code_llvm((UInt32,), raw=false) do x; y = Pair{Any, Int}(x, 1); GC.gc(); objectid(y); end
; Function Signature: var"#8"(UInt32)
;  @ REPL[2]:1 within `#8`
define i64 @"julia_#8_1087"(i32 zeroext %"x::UInt32") #0 {
top:
  %0 = alloca { ptr, i64 }, align 8
; ┌ @ Base.jl:12 within `Pair`
   %box_UInt32 = call nonnull align 8 dereferenceable(4) ptr @ijl_box_uint32(i32 zeroext %"x::UInt32") #7
; └
; ┌ @ gcutils.jl:133 within `gc` @ gcutils.jl:133
   call void @jlplt_ijl_gc_collect_1090_got.jit(i32 1)
; └
; ┌ @ runtime_internals.jl:830 within `objectid`
   store ptr %box_UInt32, ptr %0, align 8
   %1 = getelementptr inbounds i8, ptr %0, i64 8
   store i64 1, ptr %1, align 8
   %object_id = call i64 @ijl_object_id_(i64 ptrtoint (ptr @"+Core.Pair#1091.jit" to i64), ptr nonnull %0)
   ret i64 %object_id
; └
}