Gtk 3.0 Application Using LLVM Assembly

@strTitle = private unnamed_addr constant [21 x i8] c"Gtk+-3.0 - LLVM Test\00"
@strDestroy = private unnamed_addr constant [8 x i8] c"destroy\00"
@strQuit = private unnamed_addr constant [5 x i8] c"Quit\00"
@strPrompt = private unnamed_addr constant [104 x i8] c"This is an example of\0aLLVM program using Gtk+-3.0 Library\0awith GtkGrid holding a GtkLabel and GtkButton\00"
@strClicked = private unnamed_addr constant [8 x i8] c"clicked\00"
@strMargin = private unnamed_addr constant [7 x i8] c"margin\00"

define i32 @main(i32 %argc, i8** %argv) {
  %arg1 = alloca i32
  %arg2 = alloca i8**
  store i32 %argc, i32* %arg1
  store i8** %argv, i8*** %arg2
  call void @gtk_init(i32* %arg1, i8*** %arg2)

  %window = call i8* @gtk_window_new(i32 0)  ; GTK_WINDOW_TOPLEVEL = 0
  ; call void @gtk_window_set_default_size(i8* %window, i32 640, i32 480)
  call void @gtk_window_set_title(i8* %window,
    i8* getelementptr inbounds([21 x i8]* @strTitle, i32 0, i32 0))
  %nRes = call i64 @g_signal_connect_data(i8* %window,
    i8* getelementptr inbounds([8 x i8]* @strDestroy, i32 0, i32 0),
    i8* bitcast(void ()* @gtk_main_quit to i8*),
    i8* null,
    i8* null,
    i32 0)

  ; Grid container
  %grid = call i8* @gtk_grid_new()
  call void @gtk_container_add(i8* %window, i8* %grid)

  ; Button
  %btn1 = call i8* @gtk_button_new_with_label(i8* getelementptr inbounds([5 x i8]* @strQuit, i32 0, i32 0))
  %label = call i8* @gtk_label_new(i8* getelementptr inbounds([104 x i8]* @strPrompt, i32 0, i32 0))

  call void @gtk_grid_attach(i8* %grid, i8* %label,
    i32 0, i32 0,
    i32 5, i32 5)
  call void @gtk_grid_attach(i8* %grid, i8* %btn1,
    i32 4, i32 8,
    i32 1, i32 1)

  call void @gtk_grid_set_row_spacing(i8* %grid, i32 5)
  call void @gtk_grid_set_column_spacing(i8* %grid, i32 5)

  call void @g_object_set(i8* %label,
    i8* getelementptr inbounds([7 x i8]* @strMargin, i32 0, i32 0),
    i32 10, i8* null)

  ; Connect button_clicked to gtk_widget_destroy(window)
  ; 3 == G_CONNECT_SWAPPED
  ; The same as a macro g_signal_connect_swapped()
  %tmp1 = call i64 @g_signal_connect_data(i8* %btn1,
    i8* getelementptr inbounds([8 x i8]* @strClicked, i32 0, i32 0),
    i8* bitcast(void (i8*)* @gtk_widget_destroy to i8*),
    i8* %window,
    i8* null,
    i32 3)

  call void @gtk_widget_show_all(i8* %window)
  call void @gtk_main()
  ret i32 0
}

declare void @gtk_init(i32*, i8***)
declare i8* @gtk_window_new(i32)
declare void @gtk_window_set_title(i8*, i8*)
declare void @gtk_window_set_default_size(i8*, i32, i32)
declare i64 @g_signal_connect_data(i8*, i8*, i8*, i8*, i8*, i32)
declare void @gtk_widget_show_all(i8*)
declare void @gtk_main()
declare void @gtk_main_quit()
declare i8*  @gtk_grid_new()
declare i8*  @gtk_label_new(i8*)
declare i8*  @gtk_button_new_with_label(i8*)
declare void @gtk_grid_attach(i8*, i8*, i32, i32, i32, i32)
declare void @gtk_container_add(i8*, i8*)
declare void @gtk_widget_destroy(i8*)
declare void @gtk_grid_set_row_spacing(i8*, i32)
declare void @gtk_grid_set_column_spacing(i8*, i32)

declare void @g_object_set(i8*, i8*, i32, i8*)