#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*/ exit(int);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ fread(char *, int, long, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
long ftell(int /*<<< orphan*/ *);
char *malloc(long);
int /*<<< orphan*/ stderr;
char *read_text_file(char *path) {
  FILE *f = fopen(path, "r");
  if (f) {
    fseek(f, 0, SEEK_END);
    long size = ftell(f);
    fseek(f, 0, SEEK_SET);
    char *content = malloc(size + 1);
    content[size] = '\0';
    fread(content, sizeof(char), size, f);
    fclose(f);
    return content;
  } else {
    fprintf(stderr, "Couldn't read file '%s'.", path);
    exit(1);
  }
}


x86 assembly (clang, -O0):
<read_text_file>:
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)
je     1226 <read_text_file+0xa6>
mov    -0x10(%rbp),%rdi
mov    0x2e32(%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    0x2df9(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x18(%rbp),%rdi
add    $0x1,%rdi
call   1070 <malloc@plt>
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rax
mov    -0x18(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
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
mov    0x2dab(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xdc8(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   10a0 <exit@plt>

x86 assembly (clang, -O2):
<read_text_file>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%r14
lea    0xe71(%rip),%rsi
call   1090 <fopen@plt>
test   %rax,%rax
je     1202 <read_text_file+0x82>
mov    %rax,%r15
mov    0x2e45(%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    0x2e0f(%rip),%rax
mov    (%rax),%edx
mov    %r15,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
lea    0x1(%r14),%rdi
call   1070 <malloc@plt>
mov    %rax,%rbx
movb   $0x0,(%rax,%r14,1)
mov    %rax,%rdi
mov    $0x1,%esi
mov    %r14,%rdx
mov    %r15,%rcx
call   1030 <fread@plt>
mov    %r15,%rdi
call   1040 <fclose@plt>
mov    %rbx,%rax
pop    %rbx
pop    %r14
pop    %r15
ret
mov    0x2dcf(%rip),%rax
mov    (%rax),%edi
lea    0xdf0(%rip),%rsi
mov    %r14,%rdx
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   10a0 <exit@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
@SEEK_SET = global i32 0
@stderr = global i32 0
@.str.1 = [25 x i8] c"Couldn't read file '%s'.\00"
define i8* @read_text_file(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 ([2 x i8], [2 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 %10, label %32
10: ; preds = %1
%11 = load i32*, i32** %3
%12 = load i32, i32* @SEEK_END
%13 = call i32 @fseek(i32* %11, i32 0, i32 %12)
%14 = load i32*, i32** %3
%15 = call i64 @ftell(i32* %14)
store i64 %15, i64* %4
%16 = load i32*, i32** %3
%17 = load i32, i32* @SEEK_SET
%18 = call i32 @fseek(i32* %16, i32 0, i32 %17)
%19 = load i64, i64* %4
%20 = add nsw i64 %19, 1
%21 = call i8* @malloc(i64 %20)
store i8* %21, i8** %5
%22 = load i8*, i8** %5
%23 = load i64, i64* %4
%24 = getelementptr inbounds i8, i8* %22, i64 %23
store i8 0, i8* %24
%25 = load i8*, i8** %5
%26 = load i64, i64* %4
%27 = load i32*, i32** %3
%28 = call i32 @fread(i8* %25, i32 1, i64 %26, i32* %27)
%29 = load i32*, i32** %3
%30 = call i32 @fclose(i32* %29)
%31 = load i8*, i8** %5
ret i8* %31
32: ; preds = %1
%33 = load i32, i32* @stderr
%34 = load i8*, i8** %2
%35 = call i32 @fprintf(i32 %33, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i8* %34)
%36 = call i32 @exit(i32 1)
unreachable
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
@SEEK_SET = global i32 0
@stderr = global i32 0
@.str.1 = [25 x i8] c"Couldn't read file '%s'.\00"
define noalias i8* @read_text_file(i8* %0) {
%2 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %15, 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 = add nsw i64 %7, 1
%11 = tail call i8* @malloc(i64 %10)
%12 = getelementptr inbounds i8, i8* %11, i64 %7
store i8 0, i8* %12
%13 = tail call i32 @fread(i8* %11, i32 1, i64 %7, i32* %2)
%14 = tail call i32 @fclose(i32* %2)
ret i8* %11
15: ; preds = %1
%16 = load i32, i32* @stderr
%17 = tail call i32 @fprintf(i32 %16, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%18 = tail call i32 @exit(i32 1)
unreachable
}