#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*/ clear();
int /*<<< orphan*/ duplicate();
int /*<<< orphan*/ pop();
int /*<<< orphan*/ printf(char *, double);
int /*<<< orphan*/ push(int);
int /*<<< orphan*/ swap();
double top();
main() {
  int i;
  for (i = 0; i < 10; ++i) {
    push(i);
  }
  printf("%g\n", top());
  swap();
  printf("%g\n", top());
  pop();
  duplicate();
  printf("%g\n", top());
  clear();
  printf("%g\n", top());
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    11a6 <main+0x36>
mov    -0x8(%rbp),%edi
call   1060 <push@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1186 <main+0x16>
mov    $0x0,%al
call   1050 <top@plt>
lea    0xe4c(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1080 <swap@plt>
mov    $0x0,%al
call   1050 <top@plt>
lea    0xe32(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1040 <pop@plt>
mov    $0x0,%al
call   1070 <duplicate@plt>
mov    $0x0,%al
call   1050 <top@plt>
lea    0xe11(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1090 <clear@plt>
mov    $0x0,%al
call   1050 <top@plt>
lea    0xdf7(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
xor    %edi,%edi
call   1060 <push@plt>
mov    $0x1,%edi
call   1060 <push@plt>
mov    $0x2,%edi
call   1060 <push@plt>
mov    $0x3,%edi
call   1060 <push@plt>
mov    $0x4,%edi
call   1060 <push@plt>
mov    $0x5,%edi
call   1060 <push@plt>
mov    $0x6,%edi
call   1060 <push@plt>
mov    $0x7,%edi
call   1060 <push@plt>
mov    $0x8,%edi
call   1060 <push@plt>
mov    $0x9,%edi
call   1060 <push@plt>
xor    %eax,%eax
call   1050 <top@plt>
lea    0xe20(%rip),%rbx
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
call   1080 <swap@plt>
xor    %eax,%eax
call   1050 <top@plt>
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
call   1040 <pop@plt>
xor    %eax,%eax
call   1070 <duplicate@plt>
xor    %eax,%eax
call   1050 <top@plt>
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
call   1090 <clear@plt>
xor    %eax,%eax
call   1050 <top@plt>
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%g\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
br label %3
3: ; preds = %9, %0
%4 = load i32, i32* %2
%5 = icmp slt i32 %4, 10
br i1 %5, label %6, label %12
6: ; preds = %3
%7 = load i32, i32* %2
%8 = call i32 @push(i32 %7)
br label %9
9: ; preds = %6
%10 = load i32, i32* %2
%11 = add nsw i32 %10, 1
store i32 %11, i32* %2
br label %3
12: ; preds = %3
%13 = call double (...) @top()
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %13)
%15 = call i32 (...) @swap()
%16 = call double (...) @top()
%17 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %16)
%18 = call i32 (...) @pop()
%19 = call i32 (...) @duplicate()
%20 = call double (...) @top()
%21 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %20)
%22 = call i32 (...) @clear()
%23 = call double (...) @top()
%24 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %23)
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%g\0A\00"
define i32 @main() {
%1 = tail call i32 @push(i32 0)
%2 = tail call i32 @push(i32 1)
%3 = tail call i32 @push(i32 2)
%4 = tail call i32 @push(i32 3)
%5 = tail call i32 @push(i32 4)
%6 = tail call i32 @push(i32 5)
%7 = tail call i32 @push(i32 6)
%8 = tail call i32 @push(i32 7)
%9 = tail call i32 @push(i32 8)
%10 = tail call i32 @push(i32 9)
%11 = tail call double (...) @top()
%12 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %11)
%13 = tail call i32 (...) @swap()
%14 = tail call double (...) @top()
%15 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %14)
%16 = tail call i32 (...) @pop()
%17 = tail call i32 (...) @duplicate()
%18 = tail call double (...) @top()
%19 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %18)
%20 = tail call i32 (...) @clear()
%21 = tail call double (...) @top()
%22 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %21)
ret i32 0
}