#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 link(char *, char *);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ stderr;
int main(int argc, char *argv[]) {
  if (argc != 3) {
    fprintf(stderr, "Use: hlink <src_dir> <target_dir>\n");
    return 1;
  }
  int ret = link(argv[1], argv[2]);
  if (ret != 0)
    perror("link");
  return ret;
}


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)
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    11a5 <main+0x75>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rsi
call   1050 <link@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0x0,-0x14(%rbp)
je     119f <main+0x6f>
lea    0xe89(%rip),%rdi
call   1040 <perror@plt>
mov    -0x14(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x3,%edi
jne    114d <main+0x1d>
mov    0x8(%rsi),%rdi
mov    0x10(%rsi),%rsi
call   1050 <link@plt>
mov    %eax,%ebx
xor    %eax,%eax
test   %ebx,%ebx
jne    1169 <main+0x39>
pop    %rbx
ret
mov    0x2e8c(%rip),%rax
mov    (%rax),%edi
lea    0xea3(%rip),%rsi
call   1030 <fprintf@plt>
mov    $0x1,%eax
pop    %rbx
ret
lea    0xeb3(%rip),%rdi
call   1040 <perror@plt>
mov    %ebx,%eax
pop    %rbx
ret

LLVM IR (-O0):
@stderr = global i32 0
@.str = [35 x i8] c"Use: hlink <src_dir> <target_dir>\0A\00"
@.str.1 = [5 x i8] c"link\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
%7 = load i32, i32* %4
%8 = icmp ne i32 %7, 3
br i1 %8, label %9, label %12
9: ; preds = %2
%10 = load i32, i32* @stderr
%11 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0))
store i32 1, i32* %3
br label %26
12: ; preds = %2
%13 = load i8**, i8*** %5
%14 = getelementptr inbounds i8*, i8** %13, i64 1
%15 = load i8*, i8** %14
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 2
%18 = load i8*, i8** %17
%19 = call i32 @link(i8* %15, i8* %18)
store i32 %19, i32* %6
%20 = load i32, i32* %6
%21 = icmp ne i32 %20, 0
br i1 %21, label %22, label %24
22: ; preds = %12
%23 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
br label %24
24: ; preds = %22, %12
%25 = load i32, i32* %6
store i32 %25, i32* %3
br label %26
26: ; preds = %24, %9
%27 = load i32, i32* %3
ret i32 %27
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [35 x i8] c"Use: hlink <src_dir> <target_dir>\0A\00"
@.str.1 = [5 x i8] c"link\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 ([35 x i8], [35 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 @link(i8* %9, i8* %11)
%13 = icmp eq i32 %12, 0
br i1 %13, label %16, label %14
14: ; preds = %7
%15 = tail call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
br label %16
16: ; preds = %7, %14, %4
%17 = phi i32 [ 1, %4 ], [ %12, %14 ], [ 0, %7 ]
ret i32 %17
}