#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*/ SEEK_END;
int /*<<< orphan*/ SEEK_SET;
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char const *, char *);
int fread(void *, int, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ free(void *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, long, int /*<<< orphan*/);
int ftell(int /*<<< orphan*/ *);
void *malloc(int);
int /*<<< orphan*/ printf(char *, ...);
void *LoadFile(const char *pszFileName, size_t *pFileSize) {
  FILE *file;
  void *pFileData = NULL;
  int iFileSize;
  if (0)
    printf("Loading file...");
  file = fopen(pszFileName, "rb");
  if (!file) {
    if (0)
      printf("Could not open file\n");
    return NULL;
  }
  fseek(file, 0L, SEEK_END);
  iFileSize = ftell(file);
  fseek(file, 0L, SEEK_SET);
  *pFileSize = iFileSize;
  if (0)
    printf("ok. Size is %d\n", iFileSize);
  pFileData = malloc(iFileSize + 1);
  if (pFileData != NULL) {
    if (iFileSize != fread(pFileData, 1, iFileSize, file)) {
      free(pFileData);
      pFileData = NULL;
    }
  } else {
    if (0)
      printf("Could not allocate memory for file\n");
  }
  fclose(file);
  return pFileData;
}


x86 assembly (clang, -O0):
<LoadFile>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
movq   $0x0,-0x28(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xe6d(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
jne    11b4 <LoadFile+0x44>
movq   $0x0,-0x8(%rbp)
jmp    1265 <LoadFile+0xf5>
mov    -0x20(%rbp),%rdi
mov    0x2e29(%rip),%rax
mov    (%rax),%edx
xor    %eax,%eax
mov    %eax,%esi
call   1080 <fseek@plt>
mov    -0x20(%rbp),%rdi
call   1060 <ftell@plt>
mov    %eax,-0x2c(%rbp)
mov    -0x20(%rbp),%rdi
mov    0x2df7(%rip),%rax
mov    (%rax),%edx
xor    %eax,%eax
mov    %eax,%esi
call   1080 <fseek@plt>
movslq -0x2c(%rbp),%rcx
mov    -0x18(%rbp),%rax
mov    %rcx,(%rax)
mov    -0x2c(%rbp),%edi
add    $0x1,%edi
call   1070 <malloc@plt>
mov    %rax,-0x28(%rbp)
cmpq   $0x0,-0x28(%rbp)
je     124f <LoadFile+0xdf>
mov    -0x2c(%rbp),%eax
mov    %eax,-0x30(%rbp)
mov    -0x28(%rbp),%rdi
mov    -0x2c(%rbp),%edx
mov    -0x20(%rbp),%rcx
mov    $0x1,%esi
call   1040 <fread@plt>
mov    %eax,%ecx
mov    -0x30(%rbp),%eax
cmp    %ecx,%eax
je     124a <LoadFile+0xda>
mov    -0x28(%rbp),%rdi
call   1030 <free@plt>
movq   $0x0,-0x28(%rbp)
jmp    1254 <LoadFile+0xe4>
jmp    1254 <LoadFile+0xe4>
mov    -0x20(%rbp),%rdi
call   1050 <fclose@plt>
mov    -0x28(%rbp),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<LoadFile>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r15
lea    0xe7e(%rip),%rsi
call   1090 <fopen@plt>
test   %rax,%rax
je     11f8 <LoadFile+0x88>
mov    %rax,%rbx
mov    0x2e52(%rip),%rax
mov    (%rax),%edx
xor    %r14d,%r14d
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %rbx,%rdi
call   1060 <ftell@plt>
mov    %eax,%r12d
mov    0x2e21(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
movslq %r12d,%rax
mov    %rax,(%r15)
lea    0x1(%r12),%edi
call   1070 <malloc@plt>
test   %rax,%rax
je     1208 <LoadFile+0x98>
mov    %rax,%r15
mov    %rax,%rdi
mov    $0x1,%esi
mov    %r12d,%edx
mov    %rbx,%rcx
call   1040 <fread@plt>
cmp    %eax,%r12d
jne    11fd <LoadFile+0x8d>
mov    %r15,%r14
jmp    1208 <LoadFile+0x98>
xor    %r14d,%r14d
jmp    1210 <LoadFile+0xa0>
mov    %r15,%rdi
call   1030 <free@plt>
xor    %r14d,%r14d
mov    %rbx,%rdi
call   1050 <fclose@plt>
mov    %r14,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
@SEEK_END = global i32 0
@SEEK_SET = global i32 0
define i8* @LoadFile(i8* %0, i64* %1) {
%3 = alloca i8*
%4 = alloca i8*
%5 = alloca i64*
%6 = alloca i32*
%7 = alloca i8*
%8 = alloca i32
store i8* %0, i8** %4
store i64* %1, i64** %5
store i8* null, i8** %7
%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** %6
%11 = load i32*, i32** %6
%12 = icmp ne i32* %11, null
br i1 %12, label %14, label %13
13: ; preds = %2
store i8* null, i8** %3
br label %47
14: ; preds = %2
%15 = load i32*, i32** %6
%16 = load i32, i32* @SEEK_END
%17 = call i32 @fseek(i32* %15, i64 0, i32 %16)
%18 = load i32*, i32** %6
%19 = call i32 @ftell(i32* %18)
store i32 %19, i32* %8
%20 = load i32*, i32** %6
%21 = load i32, i32* @SEEK_SET
%22 = call i32 @fseek(i32* %20, i64 0, i32 %21)
%23 = load i32, i32* %8
%24 = sext i32 %23 to i64
%25 = load i64*, i64** %5
store i64 %24, i64* %25
%26 = load i32, i32* %8
%27 = add nsw i32 %26, 1
%28 = call i8* @malloc(i32 %27)
store i8* %28, i8** %7
%29 = load i8*, i8** %7
%30 = icmp ne i8* %29, null
br i1 %30, label %31, label %42
31: ; preds = %14
%32 = load i32, i32* %8
%33 = load i8*, i8** %7
%34 = load i32, i32* %8
%35 = load i32*, i32** %6
%36 = call i32 @fread(i8* %33, i32 1, i32 %34, i32* %35)
%37 = icmp ne i32 %32, %36
br i1 %37, label %38, label %41
38: ; preds = %31
%39 = load i8*, i8** %7
%40 = call i32 @free(i8* %39)
store i8* null, i8** %7
br label %41
41: ; preds = %38, %31
br label %43
42: ; preds = %14
br label %43
43: ; preds = %42, %41
%44 = load i32*, i32** %6
%45 = call i32 @fclose(i32* %44)
%46 = load i8*, i8** %7
store i8* %46, i8** %3
br label %47
47: ; preds = %43, %13
%48 = load i8*, i8** %3
ret i8* %48
}

LLVM IR (-O2):
@.str = [3 x i8] c"rb\00"
@SEEK_END = global i32 0
@SEEK_SET = global i32 0
define noalias i8* @LoadFile(i8* nocapture %0, i64* nocapture 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 %23, label %5
5: ; preds = %2
%6 = load i32, i32* @SEEK_END
%7 = tail call i32 @fseek(i32* %3, i64 0, i32 %6)
%8 = tail call i32 @ftell(i32* %3)
%9 = load i32, i32* @SEEK_SET
%10 = tail call i32 @fseek(i32* %3, i64 0, i32 %9)
%11 = sext i32 %8 to i64
store i64 %11, i64* %1
%12 = add nsw i32 %8, 1
%13 = tail call i8* @malloc(i32 %12)
%14 = icmp eq i8* %13, null
br i1 %14, label %20, label %15
15: ; preds = %5
%16 = tail call i32 @fread(i8* %13, i32 1, i32 %8, i32* %3)
%17 = icmp eq i32 %8, %16
br i1 %17, label %20, label %18
18: ; preds = %15
%19 = tail call i32 @free(i8* %13)
br label %20
20: ; preds = %5, %15, %18
%21 = phi i8* [ null, %18 ], [ %13, %15 ], [ null, %5 ]
%22 = tail call i32 @fclose(i32* %3)
br label %23
23: ; preds = %2, %20
%24 = phi i8* [ %21, %20 ], [ null, %2 ]
ret i8* %24
}