#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*/ memcpy(char *, char const *, size_t);
size_t strlen(char const *);
size_t strlcpy(char *d, const char *s, size_t bufsize) {
  size_t len = strlen(s);
  size_t ret = len;
  if (bufsize > 0) {
    if (len >= bufsize)
      len = bufsize - 1;
    memcpy(d, s, len);
    d[len] = 0;
  }
  return ret;
}


x86 assembly (clang, -O0):
<strlcpy>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %rdx,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
call   1030 <strlen@plt>
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rax
mov    %rax,-0x28(%rbp)
cmpq   $0x0,-0x18(%rbp)
jbe    118b <strlcpy+0x6b>
mov    -0x20(%rbp),%rax
cmp    -0x18(%rbp),%rax
jb     116e <strlcpy+0x4e>
mov    -0x18(%rbp),%rax
sub    $0x1,%rax
mov    %rax,-0x20(%rbp)
mov    -0x8(%rbp),%rdi
mov    -0x10(%rbp),%rsi
mov    -0x20(%rbp),%rdx
call   1040 <memcpy@plt>
mov    -0x8(%rbp),%rax
mov    -0x20(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
mov    -0x28(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<strlcpy>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rdx,%r13
mov    %rsi,%r15
mov    %rdi,%r14
mov    %rsi,%rdi
call   1030 <strlen@plt>
mov    %rax,%r12
test   %r13,%r13
je     1160 <strlcpy+0x40>
lea    -0x1(%r13),%rbx
cmp    %r13,%r12
cmovb  %r12,%rbx
mov    %r14,%rdi
mov    %r15,%rsi
mov    %rbx,%rdx
call   1040 <memcpy@plt>
movb   $0x0,(%r14,%rbx,1)
mov    %r12,%rax
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
define i64 @strlcpy(i8* %0, i8* %1, i64 %2) {
%4 = alloca i8*
%5 = alloca i8*
%6 = alloca i64
%7 = alloca i64
%8 = alloca i64
store i8* %0, i8** %4
store i8* %1, i8** %5
store i64 %2, i64* %6
%9 = load i8*, i8** %5
%10 = call i64 @strlen(i8* %9)
store i64 %10, i64* %7
%11 = load i64, i64* %7
store i64 %11, i64* %8
%12 = load i64, i64* %6
%13 = icmp ugt i64 %12, 0
br i1 %13, label %14, label %29
14: ; preds = %3
%15 = load i64, i64* %7
%16 = load i64, i64* %6
%17 = icmp uge i64 %15, %16
br i1 %17, label %18, label %21
18: ; preds = %14
%19 = load i64, i64* %6
%20 = sub i64 %19, 1
store i64 %20, i64* %7
br label %21
21: ; preds = %18, %14
%22 = load i8*, i8** %4
%23 = load i8*, i8** %5
%24 = load i64, i64* %7
%25 = call i32 @memcpy(i8* %22, i8* %23, i64 %24)
%26 = load i8*, i8** %4
%27 = load i64, i64* %7
%28 = getelementptr inbounds i8, i8* %26, i64 %27
store i8 0, i8* %28
br label %29
29: ; preds = %21, %3
%30 = load i64, i64* %8
ret i64 %30
}

LLVM IR (-O2):
define i64 @strlcpy(i8* %0, i8* %1, i64 %2) {
%4 = tail call i64 @strlen(i8* dereferenceable(1) %1)
%5 = icmp eq i64 %2, 0
br i1 %5, label %12, label %6
6: ; preds = %3
%7 = icmp ult i64 %4, %2
%8 = add i64 %2, -1
%9 = select i1 %7, i64 %4, i64 %8
%10 = tail call i32 @memcpy(i8* %0, i8* %1, i64 %9)
%11 = getelementptr inbounds i8, i8* %0, i64 %9
store i8 0, i8* %11
br label %12
12: ; preds = %6, %3
ret i64 %4
}