diff --git a/ocaml/driver/compenv.ml b/ocaml/driver/compenv.ml
index dc6bd73112a..235f3f4078c 100644
--- a/ocaml/driver/compenv.ml
+++ b/ocaml/driver/compenv.ml
@@ -362,6 +362,94 @@ let read_one_param ppf position name v =
   | "insn-sched" -> set "insn-sched" [ insn_sched ] v
   | "no-insn-sched" -> clear "insn-sched" [ insn_sched ] v
 
+  | "flambda2-join-points" ->
+    set "flambda2-join-points"
+      [Flambda2.join_points] v
+  | "no-flambda2-join-points" ->
+    clear "flambda2-join-points"
+      [Flambda2.join_points] v
+  | "flambda2-unbox-along-intra-function-control-flow" ->
+    set "flambda2-unbox-along-intra-function-control-flow"
+      [Flambda2.unbox_along_intra_function_control_flow] v
+  | "no-flambda2-unbox-along-intra-function-control-flow" ->
+    clear "flambda2-unbox-along-intra-function-control-flow"
+      [Flambda2.unbox_along_intra_function_control_flow] v
+  | "flambda2-backend-cse-at-toplevel" ->
+    set "flambda2-backend-cse-at-toplevel"
+      [Flambda2.backend_cse_at_toplevel] v
+  | "no-flambda2-backend-cse-at-toplevel" ->
+    clear "flambda2-backend-cse-at-toplevel"
+      [Flambda2.backend_cse_at_toplevel] v
+  | "flambda2-cse-depth" ->
+    int_setter ppf "flambda2-cse-depth" Flambda2.cse_depth v
+  | "flambda2-expert-inline-effects-in-cmm" ->
+    set "flambda2-expert-inline-effects-in-cmm"
+      [Flambda2.Expert.inline_effects_in_cmm] v
+  | "no-flambda2-expert-inline-effects-in-cmm" ->
+    clear "flambda2-expert-inline-effects-in-cmm"
+      [Flambda2.Expert.inline_effects_in_cmm] v
+  | "flambda2-expert-phantom-lets" ->
+    set "flambda2-expert-phantom-lets"
+      [Flambda2.Expert.phantom_lets] v
+  | "no-flambda2-expert-phantom-lets" ->
+    clear "flambda2-expert-phantom-lets"
+      [Flambda2.Expert.phantom_lets] v
+  | "flambda2-expert-max-unboxing-depth" ->
+    int_setter ppf "flambda2-expert-max-unboxing-depth"
+      Flambda2.Expert.max_unboxing_depth v
+  | "flambda2-inline-max-depth" ->
+    Int_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-max-depth'"
+      Flambda2.Inlining.max_depth
+  | "flambda2-inline-call-cost" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-call-cost'"
+      Flambda2.Inlining.call_cost
+  | "flambda2-inline-alloc-cost" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-alloc-cost'"
+      Flambda2.Inlining.alloc_cost
+  | "flambda2-inline-prim-cost" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-prim-cost'"
+      Flambda2.Inlining.prim_cost
+  | "flambda2-inline-branch-cost" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-branch-cost'"
+      Flambda2.Inlining.branch_cost
+  | "flambda2-inline-indirect-cost" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-indirect-cost'"
+      Flambda2.Inlining.indirect_call_cost
+  | "flambda2-inline-poly-compare-cost" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-poly-compare-cost'"
+      Flambda2.Inlining.poly_compare_cost
+  | "flambda2-inline-small-function-size" ->
+    Int_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-small-function-size'"
+      Flambda2.Inlining.small_function_size
+  | "flambda2-inline-large-function-size" ->
+    Int_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-large-function-size'"
+      Flambda2.Inlining.large_function_size
+  | "flambda2-inline-threshold" ->
+    Float_arg_helper.parse v
+      "Bad syntax in OCAMLPARAM for 'flambda2-inline-threshold'"
+      Flambda2.Inlining.threshold
+  | "flambda2-treat-invalid-code-as-unreachable" ->
+    set "flambda2-treat-invalid-code-as-unreachable"
+      [Flambda2.treat_invalid_code_as_unreachable] v
+  | "no-flambda2-treat-invalid-code-as-unreachable" ->
+    clear "flambda2-treat-invalid-code-as-unreachable"
+      [Flambda2.treat_invalid_code_as_unreachable] v
+  | "flambda2-inlining-report-bin" ->
+    set "flambda2-inlining-report-bin"
+      [Flambda2.Inlining.report_bin] v
+  | "no-flambda2-inlining-report-bin" ->
+    clear "flambda2-inlining-report-bin"
+      [Flambda2.Inlining.report_bin] v
+
   (* color output *)
   | "color" ->
       begin match color_reader.parse v with