#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;
char *calloc(int, long);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fread(char *, int, long, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
int ftell(int /*<<< orphan*/ *);
int /*<<< orphan*/ rewind(int /*<<< orphan*/ *);
char *readFile(char *filePath) {
  FILE *inputFile = fopen(filePath, "rb");
  fseek(inputFile, 0, SEEK_END);
  long inputFileSize = ftell(inputFile) + 1;
  rewind(inputFile);
  char *fileContents = calloc(1, inputFileSize * (sizeof(char)));
  fread(fileContents, sizeof(char), inputFileSize, inputFile);
  fclose(inputFile);
  return fileContents;
}


x86 assembly (clang, -O0):
<readFile>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%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   1070 <ftell@plt>
add    $0x1,%eax
cltq
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
call   1050 <rewind@plt>
mov    -0x18(%rbp),%rsi
shl    $0x0,%rsi
mov    $0x1,%edi
call   1060 <calloc@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    -0x10(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x20(%rbp),%rax
add    $0x20,%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,%rbx
mov    0x2e5d(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %rbx,%rdi
call   1070 <ftell@plt>
add    $0x1,%eax
movslq %eax,%r14
mov    %rbx,%rdi
call   1050 <rewind@plt>
mov    $0x1,%edi
mov    %r14,%rsi
call   1060 <calloc@plt>
mov    %rax,%r15
mov    %rax,%rdi
mov    $0x1,%esi
mov    %r14,%rdx
mov    %rbx,%rcx
call   1030 <fread@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
mov    %r15,%rax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
@SEEK_END = global i32 0
define i8* @readFile(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 = load i32, i32* @SEEK_END
%10 = call i32 @fseek(i32* %8, i32 0, i32 %9)
%11 = load i32*, i32** %3
%12 = call i32 @ftell(i32* %11)
%13 = add nsw i32 %12, 1
%14 = sext i32 %13 to i64
store i64 %14, i64* %4
%15 = load i32*, i32** %3
%16 = call i32 @rewind(i32* %15)
%17 = load i64, i64* %4
%18 = mul i64 %17, 1
%19 = call i8* @calloc(i32 1, i64 %18)
store i8* %19, i8** %5
%20 = load i8*, i8** %5
%21 = load i64, i64* %4
%22 = load i32*, i32** %3
%23 = call i32 @fread(i8* %20, i32 1, i64 %21, i32* %22)
%24 = load i32*, i32** %3
%25 = call i32 @fclose(i32* %24)
%26 = load i8*, i8** %5
ret i8* %26
}

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