#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*/ fprintf(int /*<<< orphan*/, char *);
int /*<<< orphan*/ perror(char *);
int rename(char *, char *);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  if (argc != 3) {
    fprintf(stderr, "USAGE: mv sourcefile destfile\n");
    return 1;
  }
  if (rename(argv[1], argv[2]) == -1) {
    perror("mv");
    return 1;
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     1171 <main+0x41>
mov    0x2e89(%rip),%rax
mov    (%rax),%edi
lea    0xea0(%rip),%rsi
call   1030 <fprintf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11ae <main+0x7e>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rsi
call   1050 <rename@plt>
cmp    $0xffffffff,%eax
jne    11a7 <main+0x77>
lea    0xe89(%rip),%rdi
call   1040 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    11ae <main+0x7e>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x3,%edi
jne    114e <main+0x1e>
mov    0x8(%rsi),%rdi
mov    0x10(%rsi),%rsi
call   1050 <rename@plt>
mov    %eax,%ecx
xor    %eax,%eax
cmp    $0xffffffff,%ecx
je     116a <main+0x3a>
pop    %rcx
ret
mov    0x2e8b(%rip),%rax
mov    (%rax),%edi
lea    0xea2(%rip),%rsi
call   1030 <fprintf@plt>
mov    $0x1,%eax
pop    %rcx
ret
lea    0xeae(%rip),%rdi
call   1040 <perror@plt>
jmp    1163 <main+0x33>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [31 x i8] c"USAGE: mv sourcefile destfile\0A\00"
@.str.1 = [3 x i8] c"mv\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 3
br i1 %7, label %8, label %11
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i64 0, i64 0))
store i32 1, i32* %3
br label %23
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 2
%17 = load i8*, i8** %16
%18 = call i32 @rename(i8* %14, i8* %17)
%19 = icmp eq i32 %18, -1
br i1 %19, label %20, label %22
20: ; preds = %11
%21 = call i32 @perror(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
store i32 1, i32* %3
br label %23
22: ; preds = %11
store i32 0, i32* %3
br label %23
23: ; preds = %22, %20, %8
%24 = load i32, i32* %3
ret i32 %24
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [31 x i8] c"USAGE: mv sourcefile destfile\0A\00"
@.str.1 = [3 x i8] c"mv\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %7, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i64 0, i64 0))
br label %16
7: ; preds = %2
%8 = getelementptr inbounds i8*, i8** %1, i64 1
%9 = load i8*, i8** %8
%10 = getelementptr inbounds i8*, i8** %1, i64 2
%11 = load i8*, i8** %10
%12 = tail call i32 @rename(i8* %9, i8* %11)
%13 = icmp eq i32 %12, -1
br i1 %13, label %14, label %16
14: ; preds = %7
%15 = tail call i32 @perror(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
br label %16
16: ; preds = %7, %14, %4
%17 = phi i32 [ 1, %4 ], [ 1, %14 ], [ 0, %7 ]
ret i32 %17
}