#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int fread(char *, int, size_t, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
size_t ftell(int /*<<< orphan*/ *);
char *malloc(size_t);
int /*<<< orphan*/ rewind(int /*<<< orphan*/ *);
char *readFile(char *name) {
  FILE *input = fopen(name, "r");
  fseek(input, 0, SEEK_END);
  size_t size = ftell(input);
  rewind(input);
  char *buffer = malloc(size + 1);
  int count = fread(buffer, sizeof(char), size, input);
  buffer[count] = '\0';
  fclose(input);
  return buffer;
}


x86 assembly (clang, -O0):
<readFile>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xe79(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
mov    0x2e4d(%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
call   1050 <rewind@plt>
mov    -0x18(%rbp),%rdi
add    $0x1,%rdi
call   1070 <malloc@plt>
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rdi
mov    -0x18(%rbp),%rdx
mov    -0x10(%rbp),%rcx
mov    $0x1,%esi
call   1030 <fread@plt>
mov    %eax,-0x24(%rbp)
mov    -0x20(%rbp),%rax
movslq -0x24(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
mov    -0x10(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x20(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<readFile>:
push   %r15
push   %r14
push   %rbx
lea    0xe84(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,%r15
mov    0x2e5d(%rip),%rax
mov    (%rax),%edx
mov    %r15,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %r15,%rdi
call   1060 <ftell@plt>
mov    %rax,%r14
mov    %r15,%rdi
call   1050 <rewind@plt>
lea    0x1(%r14),%rdi
call   1070 <malloc@plt>
mov    %rax,%rbx
mov    %rax,%rdi
mov    $0x1,%esi
mov    %r14,%rdx
mov    %r15,%rcx
call   1030 <fread@plt>
cltq
movb   $0x0,(%rbx,%rax,1)
mov    %r15,%rdi
call   1040 <fclose@plt>
mov    %rbx,%rax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
define i8* @readFile(i8* %0) {
%2 = alloca i8*
%3 = alloca i32*
%4 = alloca i64
%5 = alloca i8*
%6 = alloca i32
store i8* %0, i8** %2
%7 = load i8*, i8** %2
%8 = call i32* @fopen(i8* %7, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %8, i32** %3
%9 = load i32*, i32** %3
%10 = load i32, i32* @SEEK_END
%11 = call i32 @fseek(i32* %9, i32 0, i32 %10)
%12 = load i32*, i32** %3
%13 = call i64 @ftell(i32* %12)
store i64 %13, i64* %4
%14 = load i32*, i32** %3
%15 = call i32 @rewind(i32* %14)
%16 = load i64, i64* %4
%17 = add i64 %16, 1
%18 = call i8* @malloc(i64 %17)
store i8* %18, i8** %5
%19 = load i8*, i8** %5
%20 = load i64, i64* %4
%21 = load i32*, i32** %3
%22 = call i32 @fread(i8* %19, i32 1, i64 %20, i32* %21)
store i32 %22, i32* %6
%23 = load i8*, i8** %5
%24 = load i32, i32* %6
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds i8, i8* %23, i64 %25
store i8 0, i8* %26
%27 = load i32*, i32** %3
%28 = call i32 @fclose(i32* %27)
%29 = load i8*, i8** %5
ret i8* %29
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
define noalias i8* @readFile(i8* nocapture %0) {
%2 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = load i32, i32* @SEEK_END
%4 = tail call i32 @fseek(i32* %2, i32 0, i32 %3)
%5 = tail call i64 @ftell(i32* %2)
%6 = tail call i32 @rewind(i32* %2)
%7 = add i64 %5, 1
%8 = tail call i8* @malloc(i64 %7)
%9 = tail call i32 @fread(i8* %8, i32 1, i64 %5, i32* %2)
%10 = sext i32 %9 to i64
%11 = getelementptr inbounds i8, i8* %8, i64 %10
store i8 0, i8* %11
%12 = tail call i32 @fclose(i32* %2)
ret i8* %8
}