diff --git a/src/stage1/codegen.cpp b/src/stage1/codegen.cpp
index 2fc85b42fe..61139648af 100644
--- a/src/stage1/codegen.cpp
+++ b/src/stage1/codegen.cpp
@@ -4428,6 +4428,7 @@ static LLVMValueRef ir_render_call(CodeGen *g, IrExecutableGen *executable, IrIn
             gen_assign_raw(g, arg_ptr, get_pointer_to_type(g, gen_param_types.at(arg_i), true),
                     gen_param_values.at(arg_i));
         }
+        gen_param_types.deinit();
 
         if (instruction->modifier == CallModifierAsync) {
             gen_resume(g, fn_val, frame_result_loc, ResumeIdCall);
@@ -4505,6 +4506,8 @@ static LLVMValueRef ir_render_call(CodeGen *g, IrExecutableGen *executable, IrIn
             LLVMValueRef result_ptr = LLVMBuildStructGEP(g->builder, frame_result_loc, frame_ret_start + 2, "");
             return LLVMBuildLoad(g->builder, result_ptr, "");
         }
+    } else {
+        gen_param_types.deinit();
     }
 
     if (instruction->new_stack == nullptr || instruction->is_async_call_builtin) {
diff --git a/src/stage1/ir.cpp b/src/stage1/ir.cpp
index bb4ca8dbf3..fbdae69bb6 100644
--- a/src/stage1/ir.cpp
+++ b/src/stage1/ir.cpp
@@ -9606,6 +9606,7 @@ static IrInstSrc *ir_gen_continue(IrBuilderSrc *irb, Scope *continue_scope, AstN
         ScopeRuntime *scope_runtime = runtime_scopes.at(i);
         ir_mark_gen(ir_build_check_runtime_scope(irb, continue_scope, node, scope_runtime->is_comptime, is_comptime));
     }
+    runtime_scopes.deinit();
 
     IrBasicBlockSrc *dest_block = loop_scope->continue_block;
     if (!ir_gen_defers_for_block(irb, continue_scope, dest_block->scope, nullptr, nullptr))
@@ -21526,6 +21527,7 @@ static IrInstGen *ir_analyze_instruction_phi(IrAnalyze *ira, IrInstSrcPhi *phi_i
                     predecessor->instruction_list.append(instrs_to_move.pop());
                 }
                 predecessor->instruction_list.append(branch_instruction);
+                instrs_to_move.deinit();
             }
         }
 
@@ -21576,7 +21578,10 @@ static IrInstGen *ir_analyze_instruction_phi(IrAnalyze *ira, IrInstSrcPhi *phi_i
     }
 
     if (new_incoming_blocks.length == 1) {
-        return new_incoming_values.at(0);
+        IrInstGen *incoming_value = new_incoming_values.at(0);
+        new_incoming_blocks.deinit();
+        new_incoming_values.deinit();
+        return incoming_value;
     }
 
     ZigType *resolved_type = nullptr;
@@ -24154,6 +24159,7 @@ static IrInstGen *ir_analyze_container_init_fields(IrAnalyze *ira, IrInst *sourc
         }
     }
 
+    const_ptrs.deinit();
     IrInstGen *result = ir_get_deref(ira, source_instr, result_loc, nullptr);
 
     if (is_comptime && !instr_is_comptime(result)) {