diff --git a/clang/include/clang/Basic/BuiltinsAssigner.def b/clang/include/clang/Basic/BuiltinsAssigner.def
index 480f937a751b..88be6d1b988d 100644
--- a/clang/include/clang/Basic/BuiltinsAssigner.def
+++ b/clang/include/clang/Basic/BuiltinsAssigner.def
@@ -50,5 +50,8 @@ BUILTIN(__builtin_assigner_vesta_curve_init, "e2g7g7", "n")
 BUILTIN(__builtin_assigner_bls12381_curve_init, "e3g3g3", "n")
 BUILTIN(__builtin_assigner_curve25519_curve_init, "e4g5g5", "n")
 
+BUILTIN(__builtin_assigner_bit_decomposition64, "E64g1g1", "n")
+BUILTIN(__builtin_assigner_bit_composition128, "g1E64g1E64g1", "n")
+
 #undef BUILTIN
 #undef TARGET_BUILTIN
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 1c3b3fe3a782..5de8c3ddb042 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -19908,6 +19908,21 @@ Value *CodeGenFunction::EmitAssignerBuiltinExpr(unsigned int BuiltinID,
     OverloadTypes = {Curve, BaseField};
     break;
   }
+  case assigner::BI__builtin_assigner_bit_composition128: {
+    ID = Intrinsic::assigner_bit_composition128;
+    auto ElemTy = llvm::GaloisFieldType::get(context,
+                                             llvm::GALOIS_FIELD_PALLAS_BASE);
+
+    OverloadTypes = {ElemTy, llvm::FixedVectorType::get(ElemTy, 64)};
+    break;
+  }
+  case assigner::BI__builtin_assigner_bit_decomposition64: {
+    ID = Intrinsic::assigner_bit_decomposition64;
+    auto ElemTy = llvm::GaloisFieldType::get(context,
+                                             llvm::GALOIS_FIELD_PALLAS_BASE);
+    OverloadTypes = {llvm::FixedVectorType::get(ElemTy, 64), ElemTy};
+    break;
+  }
   }
 
   assert(ID != Intrinsic::not_intrinsic);
diff --git a/llvm/include/llvm/IR/IntrinsicsAssigner.td b/llvm/include/llvm/IR/IntrinsicsAssigner.td
index cc6a7943b5fd..cbaf40f4ff88 100644
--- a/llvm/include/llvm/IR/IntrinsicsAssigner.td
+++ b/llvm/include/llvm/IR/IntrinsicsAssigner.td
@@ -21,3 +21,6 @@ def int_assigner_zkml_pooling:        Intrinsic<[llvm_ptrptr_ty], [llvm_ptrptr_t
 def int_assigner_zkml_ReLU:           Intrinsic<[llvm_float_ty], [llvm_float_ty]>;
 def int_assigner_zkml_batch_norm:     Intrinsic<[llvm_ptrptr_ty], [llvm_ptrptr_ty]>;
 def int_assigner_curve_init: Intrinsic<[llvm_any_ty], [llvm_any_ty, LLVMMatchType<1>]>;
+
+def int_assigner_bit_decomposition64: Intrinsic<[llvm_anyvector_ty], [llvm_any_ty]>;
+def int_assigner_bit_composition128: Intrinsic<[llvm_any_ty], [llvm_anyvector_ty, LLVMMatchType<1>]>;