#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 atoi(char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ printf(char *, int);
scalar_t__ s_isleap(int);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  int year = 0;
  if (argc < 2) {
    fprintf(stderr, "%s [year]\n\n", argv[0]);
    return -1;
  }
  year = atoi(argv[1]);
  if (s_isleap(year))
    printf("%d is a leap year\n", year);
  else
    printf("%d is not a leap year\n", year);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    118f <main+0x4f>
mov    0x2e72(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe82(%rip),%rsi
call   1050 <fprintf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    11db <main+0x9b>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1060 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%edi
call   1040 <s_isleap@plt>
cmp    $0x0,%rax
je     11c5 <main+0x85>
mov    -0x14(%rbp),%esi
lea    0xe51(%rip),%rdi
call   1030 <printf@plt>
jmp    11d4 <main+0x94>
mov    -0x14(%rbp),%esi
lea    0xe50(%rip),%rdi
call   1030 <printf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x1,%edi
jg     1165 <main+0x25>
mov    0x2e93(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xea7(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0xffffffff,%eax
pop    %rbx
ret
mov    0x8(%rsi),%rdi
call   1060 <atoi@plt>
mov    %eax,%ebx
mov    %eax,%edi
call   1040 <s_isleap@plt>
test   %rax,%rax
je     1185 <main+0x45>
lea    0xe89(%rip),%rdi
jmp    118c <main+0x4c>
lea    0xe93(%rip),%rdi
mov    %ebx,%esi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@stderr = global i32 0
@.str = [12 x i8] c"%s [year]\0A\0A\00"
@.str.1 = [19 x i8] c"%d is a leap year\0A\00"
@.str.2 = [23 x i8] c"%d is not a leap year\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 0, i32* %6
%7 = load i32, i32* %4
%8 = icmp slt i32 %7, 2
br i1 %8, label %9, label %15
9: ; preds = %2
%10 = load i32, i32* @stderr
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %13)
store i32 -1, i32* %3
br label %30
15: ; preds = %2
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 1
%18 = load i8*, i8** %17
%19 = call i32 @atoi(i8* %18)
store i32 %19, i32* %6
%20 = load i32, i32* %6
%21 = call i64 @s_isleap(i32 %20)
%22 = icmp ne i64 %21, 0
br i1 %22, label %23, label %26
23: ; preds = %15
%24 = load i32, i32* %6
%25 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 %24)
br label %29
26: ; preds = %15
%27 = load i32, i32* %6
%28 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %27)
br label %29
29: ; preds = %26, %23
store i32 0, i32* %3
br label %30
30: ; preds = %29, %9
%31 = load i32, i32* %3
ret i32 %31
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [12 x i8] c"%s [year]\0A\0A\00"
@.str.1 = [19 x i8] c"%d is a leap year\0A\00"
@.str.2 = [23 x i8] c"%d is not a leap year\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %8
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %18
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i32 @atoi(i8* %10)
%12 = tail call i64 @s_isleap(i32 %11)
%13 = icmp eq i64 %12, 0
br i1 %13, label %16, label %14
14: ; preds = %8
%15 = tail call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 %11)
br label %18
16: ; preds = %8
%17 = tail call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %11)
br label %18
18: ; preds = %14, %16, %4
%19 = phi i32 [ -1, %4 ], [ 0, %16 ], [ 0, %14 ]
ret i32 %19
}