#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ STACKinit(int);
int STACKpop();
int /*<<< orphan*/ STACKpush(int);
int /*<<< orphan*/ printf(char *, int);
int main(void) {
  STACKinit(10);
  STACKpush(1);
  STACKpush(2);
  STACKpush(3);
  STACKpush(2);
  STACKpush(4);
  printf("Popped %i\n", STACKpop());
  printf("Popped %i\n", STACKpop());
  printf("Popped %i\n", STACKpop());
  printf("Popped %i\n", STACKpop());
  printf("Popped %i\n", STACKpop());
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0xa,%edi
call   1060 <STACKinit@plt>
mov    $0x1,%edi
call   1040 <STACKpush@plt>
mov    $0x2,%edi
call   1040 <STACKpush@plt>
mov    $0x3,%edi
call   1040 <STACKpush@plt>
mov    $0x2,%edi
call   1040 <STACKpush@plt>
mov    $0x4,%edi
call   1040 <STACKpush@plt>
mov    $0x0,%al
call   1050 <STACKpop@plt>
mov    %eax,%esi
lea    0xe65(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <STACKpop@plt>
mov    %eax,%esi
lea    0xe50(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <STACKpop@plt>
mov    %eax,%esi
lea    0xe3b(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <STACKpop@plt>
mov    %eax,%esi
lea    0xe26(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <STACKpop@plt>
mov    %eax,%esi
lea    0xe11(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    $0xa,%edi
call   1060 <STACKinit@plt>
mov    $0x1,%edi
call   1040 <STACKpush@plt>
mov    $0x2,%edi
call   1040 <STACKpush@plt>
mov    $0x3,%edi
call   1040 <STACKpush@plt>
mov    $0x2,%edi
call   1040 <STACKpush@plt>
mov    $0x4,%edi
call   1040 <STACKpush@plt>
xor    %eax,%eax
call   1050 <STACKpop@plt>
lea    0xe75(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
call   1050 <STACKpop@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
call   1050 <STACKpop@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
call   1050 <STACKpop@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
call   1050 <STACKpop@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [11 x i8] c"Popped %i\0A\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @STACKinit(i32 10)
%3 = call i32 @STACKpush(i32 1)
%4 = call i32 @STACKpush(i32 2)
%5 = call i32 @STACKpush(i32 3)
%6 = call i32 @STACKpush(i32 2)
%7 = call i32 @STACKpush(i32 4)
%8 = call i32 (...) @STACKpop()
%9 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = call i32 (...) @STACKpop()
%11 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %10)
%12 = call i32 (...) @STACKpop()
%13 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %12)
%14 = call i32 (...) @STACKpop()
%15 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %14)
%16 = call i32 (...) @STACKpop()
%17 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %16)
ret i32 0
}

LLVM IR (-O2):
@.str = [11 x i8] c"Popped %i\0A\00"
define i32 @main() {
%1 = tail call i32 @STACKinit(i32 10)
%2 = tail call i32 @STACKpush(i32 1)
%3 = tail call i32 @STACKpush(i32 2)
%4 = tail call i32 @STACKpush(i32 3)
%5 = tail call i32 @STACKpush(i32 2)
%6 = tail call i32 @STACKpush(i32 4)
%7 = tail call i32 (...) @STACKpop()
%8 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %7)
%9 = tail call i32 (...) @STACKpop()
%10 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %9)
%11 = tail call i32 (...) @STACKpop()
%12 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %11)
%13 = tail call i32 (...) @STACKpop()
%14 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = tail call i32 (...) @STACKpop()
%16 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %15)
ret i32 0
}