clean up some resources

src/codegen.cpp

@@ -152,6 +152,10 @@ CodeGen *codegen_create(Buf *root_src_path, const ZigTarget *target, OutType out
     return g;
 }
 
+void codegen_destroy(CodeGen *codegen) {
+    LLVMDisposeTargetMachine(codegen->target_machine);
+}
+
 void codegen_set_output_h_path(CodeGen *g, Buf *h_path) {
     g->out_h_path = h_path;
 }

src/codegen.hpp

@@ -16,6 +16,7 @@
 
 CodeGen *codegen_create(Buf *root_src_path, const ZigTarget *target, OutType out_type, BuildMode build_mode,
     Buf *zig_lib_dir);
+void codegen_destroy(CodeGen *codegen);
 
 void codegen_set_clang_argv(CodeGen *codegen, const char **args, size_t len);
 void codegen_set_llvm_argv(CodeGen *codegen, const char **args, size_t len);

src/link.cpp

@@ -65,6 +65,8 @@ static Buf *build_o_raw(CodeGen *parent_gen, const char *oname, Buf *full_path)
     os_path_join(parent_gen->cache_dir, o_out_name, output_path);
     codegen_link(child_gen, buf_ptr(output_path));
 
+    codegen_destroy(child_gen);
+
     return output_path;
 }
 

src/main.cpp

@@ -421,6 +421,7 @@ int main(int argc, char **argv) {
         g->root_package->package_table.put(buf_create_from_str("@build"), build_pkg);
         codegen_build(g);
         codegen_link(g, buf_ptr(path_to_build_exe));
+        codegen_destroy(g);
 
         Termination term;
         os_spawn_process(buf_ptr(path_to_build_exe), args, &term);

src/zig_llvm.cpp

@@ -165,7 +165,8 @@ bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMM
 
     MPM.run(*module);
 
-    dest.flush();
+    dest.close();
+
     return false;
 }