#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*/ EXIT_FAILURE;
int /*<<< orphan*/ SEEK_END;
int /*<<< orphan*/ SEEK_SET;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char const *, char *);
int /*<<< orphan*/ fread(void *, long, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
long ftell(int /*<<< orphan*/ *);
void *malloc(long);
int /*<<< orphan*/ printf(char *, char const *);
void *load_rom(const char *path) {
  FILE *fp = fopen(path, "rb");
  if (!fp) {
    printf("Could not open %s\n", path);
    exit(EXIT_FAILURE);
  }
  fseek(fp, 0, SEEK_END);
  long size = ftell(fp);
  fseek(fp, 0, SEEK_SET);
  void *data = malloc(size);
  fread(data, size, 1, fp);
  fclose(fp);
  return data;
}


x86 assembly (clang, -O0):
<load_rom>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xe69(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    11c9 <load_rom+0x49>
mov    -0x8(%rbp),%rsi
lea    0xe4d(%rip),%rdi
call   1050 <printf@plt>
mov    0x2e0e(%rip),%rax
mov    (%rax),%edi
call   10a0 <exit@plt>
mov    -0x10(%rbp),%rdi
mov    0x2e14(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x10(%rbp),%rdi
call   1060 <ftell@plt>
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
mov    0x2de3(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x18(%rbp),%rdi
call   1070 <malloc@plt>
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rdi
mov    -0x18(%rbp),%rsi
mov    -0x10(%rbp),%rcx
mov    $0x1,%edx
call   1030 <fread@plt>
mov    -0x10(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x20(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<load_rom>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%r14
lea    0xe71(%rip),%rsi
call   1090 <fopen@plt>
test   %rax,%rax
je     11fc <load_rom+0x7c>
mov    %rax,%rbx
mov    0x2e45(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %rbx,%rdi
call   1060 <ftell@plt>
mov    %rax,%r14
mov    0x2e17(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %r14,%rdi
call   1070 <malloc@plt>
mov    %rax,%r15
mov    %rax,%rdi
mov    %r14,%rsi
mov    $0x1,%edx
mov    %rbx,%rcx
call   1030 <fread@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
mov    %r15,%rax
pop    %rbx
pop    %r14
pop    %r15
ret
lea    0xe00(%rip),%rdi
mov    %r14,%rsi
call   1050 <printf@plt>
mov    0x2dbe(%rip),%rax
mov    (%rax),%edi
call   10a0 <exit@plt>

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
@.str.1 = [19 x i8] c"Could not open %s\0A\00"
@EXIT_FAILURE = global i32 0
@SEEK_END = global i32 0
@SEEK_SET = global i32 0
define i8* @load_rom(i8* %0) {
%2 = alloca i8*
%3 = alloca i32*
%4 = alloca i64
%5 = alloca i8*
store i8* %0, i8** %2
%6 = load i8*, i8** %2
%7 = call i32* @fopen(i8* %6, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %7, i32** %3
%8 = load i32*, i32** %3
%9 = icmp ne i32* %8, null
br i1 %9, label %15, label %10
10: ; preds = %1
%11 = load i8*, i8** %2
%12 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i8* %11)
%13 = load i32, i32* @EXIT_FAILURE
%14 = call i32 @exit(i32 %13)
unreachable
15: ; preds = %1
%16 = load i32*, i32** %3
%17 = load i32, i32* @SEEK_END
%18 = call i32 @fseek(i32* %16, i32 0, i32 %17)
%19 = load i32*, i32** %3
%20 = call i64 @ftell(i32* %19)
store i64 %20, i64* %4
%21 = load i32*, i32** %3
%22 = load i32, i32* @SEEK_SET
%23 = call i32 @fseek(i32* %21, i32 0, i32 %22)
%24 = load i64, i64* %4
%25 = call i8* @malloc(i64 %24)
store i8* %25, i8** %5
%26 = load i8*, i8** %5
%27 = load i64, i64* %4
%28 = load i32*, i32** %3
%29 = call i32 @fread(i8* %26, i64 %27, i32 1, i32* %28)
%30 = load i32*, i32** %3
%31 = call i32 @fclose(i32* %30)
%32 = load i8*, i8** %5
ret i8* %32
}

LLVM IR (-O2):
@.str = [3 x i8] c"rb\00"
@.str.1 = [19 x i8] c"Could not open %s\0A\00"
@EXIT_FAILURE = global i32 0
@SEEK_END = global i32 0
@SEEK_SET = global i32 0
define noalias i8* @load_rom(i8* %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 %4, label %8
4: ; preds = %1
%5 = tail call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%6 = load i32, i32* @EXIT_FAILURE
%7 = tail call i32 @exit(i32 %6)
unreachable
8: ; preds = %1
%9 = load i32, i32* @SEEK_END
%10 = tail call i32 @fseek(i32* %2, i32 0, i32 %9)
%11 = tail call i64 @ftell(i32* %2)
%12 = load i32, i32* @SEEK_SET
%13 = tail call i32 @fseek(i32* %2, i32 0, i32 %12)
%14 = tail call i8* @malloc(i64 %11)
%15 = tail call i32 @fread(i8* %14, i64 %11, i32 1, i32* %2)
%16 = tail call i32 @fclose(i32* %2)
ret i8* %14
}