#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 *, char *);
int fread(char *, int, long, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
long ftell(int /*<<< orphan*/ *);
char *malloc(long);
char *load(char *filename) {
  char *buffer = 0;
  long length;
  FILE *f = fopen(filename, "rb");
  if (f) {
    fseek(f, 0, SEEK_END);
    length = ftell(f);
    fseek(f, 0, SEEK_SET);
    buffer = malloc(length);
    if (buffer) {
      int res = fread(buffer, 1, length, f);
    }
    fclose(f);
  }
  return buffer;
}


x86 assembly (clang, -O0):
<load>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
movq   $0x0,-0x10(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xe81(%rip),%rsi
call   1080 <fopen@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
je     1202 <load+0xa2>
mov    -0x20(%rbp),%rdi
mov    0x2e4a(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1070 <fseek@plt>
mov    -0x20(%rbp),%rdi
call   1050 <ftell@plt>
mov    %rax,-0x18(%rbp)
mov    -0x20(%rbp),%rdi
mov    0x2e19(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1070 <fseek@plt>
mov    -0x18(%rbp),%rdi
call   1060 <malloc@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
je     11f9 <load+0x99>
mov    -0x10(%rbp),%rdi
mov    -0x18(%rbp),%rdx
mov    -0x20(%rbp),%rcx
mov    $0x1,%esi
call   1030 <fread@plt>
mov    %eax,-0x24(%rbp)
mov    -0x20(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x10(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<load>:
push   %r15
push   %r14
push   %rbx
lea    0xe94(%rip),%rsi
call   1080 <fopen@plt>
test   %rax,%rax
je     11d7 <load+0x77>
mov    %rax,%rbx
mov    0x2e68(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1070 <fseek@plt>
mov    %rbx,%rdi
call   1050 <ftell@plt>
mov    %rax,%r15
mov    0x2e3a(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1070 <fseek@plt>
mov    %r15,%rdi
call   1060 <malloc@plt>
mov    %rax,%r14
test   %rax,%rax
je     11cd <load+0x6d>
mov    %r14,%rdi
mov    $0x1,%esi
mov    %r15,%rdx
mov    %rbx,%rcx
call   1030 <fread@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
jmp    11da <load+0x7a>
xor    %r14d,%r14d
mov    %r14,%rax
pop    %rbx
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* @load(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
%4 = alloca i64
%5 = alloca i32*
%6 = alloca i32
store i8* %0, i8** %2
store i8* null, i8** %3
%7 = load i8*, i8** %2
%8 = call i32* @fopen(i8* %7, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %8, i32** %5
%9 = load i32*, i32** %5
%10 = icmp ne i32* %9, null
br i1 %10, label %11, label %32
11: ; preds = %1
%12 = load i32*, i32** %5
%13 = load i32, i32* @SEEK_END
%14 = call i32 @fseek(i32* %12, i32 0, i32 %13)
%15 = load i32*, i32** %5
%16 = call i64 @ftell(i32* %15)
store i64 %16, i64* %4
%17 = load i32*, i32** %5
%18 = load i32, i32* @SEEK_SET
%19 = call i32 @fseek(i32* %17, i32 0, i32 %18)
%20 = load i64, i64* %4
%21 = call i8* @malloc(i64 %20)
store i8* %21, i8** %3
%22 = load i8*, i8** %3
%23 = icmp ne i8* %22, null
br i1 %23, label %24, label %29
24: ; preds = %11
%25 = load i8*, i8** %3
%26 = load i64, i64* %4
%27 = load i32*, i32** %5
%28 = call i32 @fread(i8* %25, i32 1, i64 %26, i32* %27)
store i32 %28, i32* %6
br label %29
29: ; preds = %24, %11
%30 = load i32*, i32** %5
%31 = call i32 @fclose(i32* %30)
br label %32
32: ; preds = %29, %1
%33 = load i8*, i8** %3
ret i8* %33
}

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