#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fread(void *, int, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/, int);
int ftell(int /*<<< orphan*/ *);
void *malloc(int);
int /*<<< orphan*/ memset(void *, int /*<<< orphan*/, int);
void *loadfile(char *name, int *rsz) {
  void *buf;
  FILE *fd;
  int sz;
  fd = fopen(name, "rb");
  if (!fd)
    return (NULL);
  fseek(fd, 0, 2);
  sz = ftell(fd);
  fseek(fd, 0, 0);
  buf = malloc(sz + 16);
  memset(buf, 0, sz + 16);
  fread(buf, 1, sz, fd);
  fclose(fd);
  if (rsz)
    *rsz = sz;
  return (buf);
}


x86 assembly (clang, -O0):
<loadfile>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xe75(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,-0x28(%rbp)
cmpq   $0x0,-0x28(%rbp)
jne    11ac <loadfile+0x3c>
movq   $0x0,-0x8(%rbp)
jmp    122f <loadfile+0xbf>
mov    -0x28(%rbp),%rdi
xor    %esi,%esi
mov    $0x2,%edx
call   1080 <fseek@plt>
mov    -0x28(%rbp),%rdi
call   1060 <ftell@plt>
mov    %eax,-0x2c(%rbp)
mov    -0x28(%rbp),%rdi
xor    %edx,%edx
mov    %edx,%esi
call   1080 <fseek@plt>
mov    -0x2c(%rbp),%edi
add    $0x10,%edi
call   1070 <malloc@plt>
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rdi
mov    -0x2c(%rbp),%edx
add    $0x10,%edx
xor    %esi,%esi
call   1050 <memset@plt>
mov    -0x20(%rbp),%rdi
mov    -0x2c(%rbp),%edx
mov    -0x28(%rbp),%rcx
mov    $0x1,%esi
call   1030 <fread@plt>
mov    -0x28(%rbp),%rdi
call   1040 <fclose@plt>
cmpq   $0x0,-0x18(%rbp)
je     1227 <loadfile+0xb7>
mov    -0x2c(%rbp),%ecx
mov    -0x18(%rbp),%rax
mov    %ecx,(%rax)
mov    -0x20(%rbp),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<loadfile>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
mov    %rsi,%r14
lea    0xe7e(%rip),%rsi
call   1090 <fopen@plt>
test   %rax,%rax
je     11f4 <loadfile+0x84>
mov    %rax,%rbx
mov    %rax,%rdi
xor    %esi,%esi
mov    $0x2,%edx
call   1080 <fseek@plt>
mov    %rbx,%rdi
call   1060 <ftell@plt>
mov    %eax,%r15d
mov    %rbx,%rdi
xor    %esi,%esi
xor    %edx,%edx
call   1080 <fseek@plt>
lea    0x10(%r15),%ebp
mov    %ebp,%edi
call   1070 <malloc@plt>
mov    %rax,%r12
mov    %rax,%rdi
xor    %esi,%esi
mov    %ebp,%edx
call   1050 <memset@plt>
mov    %r12,%rdi
mov    $0x1,%esi
mov    %r15d,%edx
mov    %rbx,%rcx
call   1030 <fread@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
test   %r14,%r14
je     11f7 <loadfile+0x87>
mov    %r15d,(%r14)
jmp    11f7 <loadfile+0x87>
xor    %r12d,%r12d
mov    %r12,%rax
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
define i8* @loadfile(i8* %0, i32* %1) {
%3 = alloca i8*
%4 = alloca i8*
%5 = alloca i32*
%6 = alloca i8*
%7 = alloca i32*
%8 = alloca i32
store i8* %0, i8** %4
store i32* %1, i32** %5
%9 = load i8*, i8** %4
%10 = call i32* @fopen(i8* %9, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %10, i32** %7
%11 = load i32*, i32** %7
%12 = icmp ne i32* %11, null
br i1 %12, label %14, label %13
13: ; preds = %2
store i8* null, i8** %3
br label %41
14: ; preds = %2
%15 = load i32*, i32** %7
%16 = call i32 @fseek(i32* %15, i32 0, i32 2)
%17 = load i32*, i32** %7
%18 = call i32 @ftell(i32* %17)
store i32 %18, i32* %8
%19 = load i32*, i32** %7
%20 = call i32 @fseek(i32* %19, i32 0, i32 0)
%21 = load i32, i32* %8
%22 = add nsw i32 %21, 16
%23 = call i8* @malloc(i32 %22)
store i8* %23, i8** %6
%24 = load i8*, i8** %6
%25 = load i32, i32* %8
%26 = add nsw i32 %25, 16
%27 = call i32 @memset(i8* %24, i32 0, i32 %26)
%28 = load i8*, i8** %6
%29 = load i32, i32* %8
%30 = load i32*, i32** %7
%31 = call i32 @fread(i8* %28, i32 1, i32 %29, i32* %30)
%32 = load i32*, i32** %7
%33 = call i32 @fclose(i32* %32)
%34 = load i32*, i32** %5
%35 = icmp ne i32* %34, null
br i1 %35, label %36, label %39
36: ; preds = %14
%37 = load i32, i32* %8
%38 = load i32*, i32** %5
store i32 %37, i32* %38
br label %39
39: ; preds = %36, %14
%40 = load i8*, i8** %6
store i8* %40, i8** %3
br label %41
41: ; preds = %39, %13
%42 = load i8*, i8** %3
ret i8* %42
}

LLVM IR (-O2):
@.str = [3 x i8] c"rb\00"
define i8* @loadfile(i8* nocapture %0, i32* writeonly %1) {
%3 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%4 = icmp eq i32* %3, null
br i1 %4, label %16, label %5
5: ; preds = %2
%6 = tail call i32 @fseek(i32* %3, i32 0, i32 2)
%7 = tail call i32 @ftell(i32* %3)
%8 = tail call i32 @fseek(i32* %3, i32 0, i32 0)
%9 = add nsw i32 %7, 16
%10 = tail call i8* @malloc(i32 %9)
%11 = tail call i32 @memset(i8* %10, i32 0, i32 %9)
%12 = tail call i32 @fread(i8* %10, i32 1, i32 %7, i32* %3)
%13 = tail call i32 @fclose(i32* %3)
%14 = icmp eq i32* %1, null
br i1 %14, label %16, label %15
15: ; preds = %5
store i32 %7, i32* %1
br label %16
16: ; preds = %5, %15, %2
%17 = phi i8* [ null, %2 ], [ %10, %15 ], [ %10, %5 ]
ret i8* %17
}