#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*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fread(char *, long, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
long ftell(int /*<<< orphan*/ *);
scalar_t__ malloc(long);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ rewind(int /*<<< orphan*/ *);
char *parseFile(char *file) {
  FILE *fp;
  long len;
  char *buff;
  printf("file: \"%s\"\n", file);
  fp = fopen(file, "rb");
  if (!fp) {
    perror("File does not exist");
    exit(EXIT_FAILURE);
  }
  fseek(fp, 0, SEEK_END);
  len = ftell(fp);
  rewind(fp);
  buff = (char *)malloc((len + 1) * sizeof(char));
  fread(buff, len, 1, fp);
  fclose(fp);
  return buff;
}


x86 assembly (clang, -O0):
<parseFile>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rsi
lea    0xe49(%rip),%rdi
call   1050 <printf@plt>
mov    -0x8(%rbp),%rdi
lea    0xe45(%rip),%rsi
call   10a0 <fopen@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    11f5 <parseFile+0x55>
lea    0xe2d(%rip),%rdi
call   10b0 <perror@plt>
mov    0x2dea(%rip),%rax
mov    (%rax),%edi
call   10c0 <exit@plt>
mov    -0x10(%rbp),%rdi
mov    0x2de8(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1090 <fseek@plt>
mov    -0x10(%rbp),%rdi
call   1070 <ftell@plt>
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
call   1060 <rewind@plt>
mov    -0x18(%rbp),%rdi
add    $0x1,%rdi
shl    $0x0,%rdi
call   1080 <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):
<parseFile>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%rbx
lea    0xe51(%rip),%rdi
mov    %rbx,%rsi
call   1050 <printf@plt>
lea    0xe4e(%rip),%rsi
mov    %rbx,%rdi
call   10a0 <fopen@plt>
test   %rax,%rax
je     1224 <parseFile+0x84>
mov    %rax,%rbx
mov    0x2e13(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1090 <fseek@plt>
mov    %rbx,%rdi
call   1070 <ftell@plt>
mov    %rax,%r14
mov    %rbx,%rdi
call   1060 <rewind@plt>
lea    0x1(%r14),%rdi
call   1080 <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    0xde4(%rip),%rdi
call   10b0 <perror@plt>
mov    0x2da1(%rip),%rax
mov    (%rax),%edi
call   10c0 <exit@plt>

LLVM IR (-O0):
@.str = [12 x i8] c"file: \22%s\22\0A\00"
@.str.1 = [3 x i8] c"rb\00"
@.str.2 = [20 x i8] c"File does not exist\00"
@EXIT_FAILURE = global i32 0
@SEEK_END = global i32 0
define i8* @parseFile(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 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %6)
%8 = load i8*, i8** %2
%9 = call i32* @fopen(i8* %8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
store i32* %9, i32** %3
%10 = load i32*, i32** %3
%11 = icmp ne i32* %10, null
br i1 %11, label %16, label %12
12: ; preds = %1
%13 = call i32 @perror(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0))
%14 = load i32, i32* @EXIT_FAILURE
%15 = call i32 @exit(i32 %14)
unreachable
16: ; preds = %1
%17 = load i32*, i32** %3
%18 = load i32, i32* @SEEK_END
%19 = call i32 @fseek(i32* %17, i32 0, i32 %18)
%20 = load i32*, i32** %3
%21 = call i64 @ftell(i32* %20)
store i64 %21, i64* %4
%22 = load i32*, i32** %3
%23 = call i32 @rewind(i32* %22)
%24 = load i64, i64* %4
%25 = add nsw i64 %24, 1
%26 = mul i64 %25, 1
%27 = call i64 @malloc(i64 %26)
%28 = inttoptr i64 %27 to i8*
store i8* %28, i8** %5
%29 = load i8*, i8** %5
%30 = load i64, i64* %4
%31 = load i32*, i32** %3
%32 = call i32 @fread(i8* %29, i64 %30, i32 1, i32* %31)
%33 = load i32*, i32** %3
%34 = call i32 @fclose(i32* %33)
%35 = load i8*, i8** %5
ret i8* %35
}

LLVM IR (-O2):
@.str = [12 x i8] c"file: \22%s\22\0A\00"
@.str.1 = [3 x i8] c"rb\00"
@.str.2 = [20 x i8] c"File does not exist\00"
@EXIT_FAILURE = global i32 0
@SEEK_END = global i32 0
define i8* @parseFile(i8* %0) {
%2 = tail call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%4 = icmp eq i32* %3, null
br i1 %4, label %5, label %9
5: ; preds = %1
%6 = tail call i32 @perror(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0))
%7 = load i32, i32* @EXIT_FAILURE
%8 = tail call i32 @exit(i32 %7)
unreachable
9: ; preds = %1
%10 = load i32, i32* @SEEK_END
%11 = tail call i32 @fseek(i32* %3, i32 0, i32 %10)
%12 = tail call i64 @ftell(i32* %3)
%13 = tail call i32 @rewind(i32* %3)
%14 = add nsw i64 %12, 1
%15 = tail call i64 @malloc(i64 %14)
%16 = inttoptr i64 %15 to i8*
%17 = tail call i32 @fread(i8* %16, i64 %12, i32 1, i32* %3)
%18 = tail call i32 @fclose(i32* %3)
ret i8* %16
}