#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 */
scalar_t__ chdir(char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ stderr;
int builtin_cd(int argc, char *argv[]) {
  if (argc != 2) {
    fprintf(stderr, "%s: wrong argument\n", argv[0]);
    return 1;
  }
  if (chdir(argv[1]) < 0) {
    perror(argv[1]);
    return 1;
  }
  return 0;
}


x86 assembly (clang, -O0):
<builtin_cd>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     1171 <builtin_cd+0x41>
mov    0x2e90(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xea0(%rip),%rsi
call   1040 <fprintf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11a8 <builtin_cd+0x78>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <chdir@plt>
cmp    $0x0,%rax
jge    11a1 <builtin_cd+0x71>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    11a8 <builtin_cd+0x78>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<builtin_cd>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x2,%edi
jne    114e <builtin_cd+0x1e>
mov    0x8(%rbx),%rdi
call   1030 <chdir@plt>
mov    %rax,%rcx
xor    %eax,%eax
test   %rcx,%rcx
js     116d <builtin_cd+0x3d>
pop    %rbx
ret
mov    0x2e8b(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe9f(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%eax
pop    %rbx
ret
mov    0x8(%rbx),%rdi
call   1050 <perror@plt>
jmp    1166 <builtin_cd+0x36>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [20 x i8] c"%s: wrong argument\0A\00"
define i32 @builtin_cd(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 2
br i1 %7, label %8, label %14
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = load i8**, i8*** %5
%11 = getelementptr inbounds i8*, i8** %10, i64 0
%12 = load i8*, i8** %11
%13 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %12)
store i32 1, i32* %3
br label %26
14: ; preds = %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i64 @chdir(i8* %17)
%19 = icmp slt i64 %18, 0
br i1 %19, label %20, label %25
20: ; preds = %14
%21 = load i8**, i8*** %5
%22 = getelementptr inbounds i8*, i8** %21, i64 1
%23 = load i8*, i8** %22
%24 = call i32 @perror(i8* %23)
store i32 1, i32* %3
br label %26
25: ; preds = %14
store i32 0, i32* %3
br label %26
26: ; preds = %25, %20, %8
%27 = load i32, i32* %3
ret i32 %27
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [20 x i8] c"%s: wrong argument\0A\00"
define i32 @builtin_cd(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %8, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %16
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i64 @chdir(i8* %10)
%12 = icmp slt i64 %11, 0
br i1 %12, label %13, label %16
13: ; preds = %8
%14 = load i8*, i8** %9
%15 = tail call i32 @perror(i8* %14)
br label %16
16: ; preds = %8, %13, %4
%17 = phi i32 [ 1, %4 ], [ 1, %13 ], [ 0, %8 ]
ret i32 %17
}