diff --git a/vyper/venom/__init__.py b/vyper/venom/__init__.py
index 542bd70bad..772686d286 100644
--- a/vyper/venom/__init__.py
+++ b/vyper/venom/__init__.py
@@ -46,9 +46,8 @@ def _run_passes(fn: IRFunction, optimize: OptimizationLevel) -> None:
 
     FunctionInlinerPass(ac, fn).run_pass()
 
-    fn.remove_unreachable_blocks()
-    return
-
+    RemoveUnusedVariablesPass(ac, fn).run_pass()
+    StoreElimination(ac, fn).run_pass()
 
     SimplifyCFGPass(ac, fn).run_pass()
     MakeSSA(ac, fn).run_pass()
@@ -70,6 +69,6 @@ def generate_ir(ir: IRnode, optimize: OptimizationLevel) -> IRContext:
     for fn in ctx.functions.values():
         _run_passes(fn, optimize)
 
-    #ctx.prune_unreachable_functions()
+    ctx.prune_unreachable_functions()
 
     return ctx
diff --git a/vyper/venom/passes/function_inliner.py b/vyper/venom/passes/function_inliner.py
index e97d4fbda5..996f86cae2 100644
--- a/vyper/venom/passes/function_inliner.py
+++ b/vyper/venom/passes/function_inliner.py
@@ -74,13 +74,9 @@ def _handle_invoke(self, invoke_inst, invoke_idx):
                 inst.parent = new_bb
                 new_bb.instructions.append(inst)
 
-                new_var = fn.get_next_variable()
-                var_map[inst.output] = new_var
-
-
                 for j, op in enumerate(inst.operands):
                     if isinstance(op, IRVariable):
-                        inst.operands[j] = var_map[inst.operands[j]]
+                        inst.operands[j] = var_map[op]
                     if inst.opcode in CFG_ALTERING_INSTRUCTIONS and isinstance(op, IRLabel):
                         inst.operands[j] = label_map[op]
 
@@ -90,18 +86,16 @@ def _handle_invoke(self, invoke_inst, invoke_idx):
                     inst.output = None
                 if inst.opcode.startswith("palloca"):
                     alloca_id = tuple(inst.operands)
-                    var_map[inst.output] = self._alloca_map[alloca_id].output
-                    print("ENTER0", var_map[inst.output], inst)
-                    inst.opcode = "nop"
-                    inst.operands = []
-                    inst.output = None
+                    inst.opcode = "store"
+                    inst.operands = [self._alloca_map[alloca_id].output]
                 if inst.opcode == "param":
-                    var_map[inst.output] = invoke_inst.operands[-i-1]
-                    #print("ENTER", var_map[inst.output], inst)
-                    inst.opcode = "nop"
-                    inst.operands = []
-                    inst.output = None
-                    #print("ENTER", inst)
+                    inst.opcode = "store"
+                    op = invoke_inst.operands[-i-1]
+                    inst.operands = [invoke_inst.operands[-i-1]]
+
+                new_var = fn.get_next_variable()
+                var_map[inst.output] = new_var
+                inst.output = new_var
 
             fn.append_basic_block(new_bb)
             self.worklist.append(new_bb)
diff --git a/vyper/venom/passes/remove_unused_variables.py b/vyper/venom/passes/remove_unused_variables.py
index be9c1ed535..e022b300cc 100644
--- a/vyper/venom/passes/remove_unused_variables.py
+++ b/vyper/venom/passes/remove_unused_variables.py
@@ -27,6 +27,7 @@ def run_pass(self):
             self._process_instruction(inst)
 
         self.analyses_cache.invalidate_analysis(LivenessAnalysis)
+        self.analyses_cache.invalidate_analysis(DFGAnalysis)
 
     def _process_instruction(self, inst):
         if inst.output is None:
diff --git a/vyper/venom/passes/sccp/sccp.py b/vyper/venom/passes/sccp/sccp.py
index 8596bc8405..d6604bb62b 100644
--- a/vyper/venom/passes/sccp/sccp.py
+++ b/vyper/venom/passes/sccp/sccp.py
@@ -145,7 +145,7 @@ def _handle_SSA_work_item(self, work_item: SSAWorkListItem):
             self._visit_expr(work_item.inst)
 
     def _lookup_from_lattice(self, op: IROperand) -> LatticeItem:
-        assert isinstance(op, IRVariable), "Can't get lattice for non-variable"
+        assert isinstance(op, IRVariable), op
         lat = self.lattice[op]
         assert lat is not None, f"Got undefined var {op}"
         return lat