#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 const *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *, int);
int /*<<< orphan*/ 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*/ stderr;
char *read_from_file(const char *fn) {
  FILE *f;
  char *regstr;
  size_t size;
  f = fopen(fn, "r");
  if (!f) {
    return NULL;
  }
  fseek(f, 0, SEEK_END);
  size = ftell(f);
  regstr = malloc(size);
  if (!regstr) {
    do {
      fprintf(stderr, "Insufficient memory, file %s, near line %d\n",
              "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/"
              "2022-01-22/02-19-57/repos/vmxdev/sidmat/refs/heads/master/"
              "sidmat_common.h",
              285);
      exit(1);
    } while (0);
  }
  fseek(f, 0, SEEK_SET);
  fread(regstr, 1, size, f);
  fclose(f);
  return regstr;
}


x86 assembly (clang, -O0):
<read_from_file>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xe69(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    11b8 <read_from_file+0x38>
movq   $0x0,-0x8(%rbp)
jmp    125c <read_from_file+0xdc>
mov    -0x18(%rbp),%rdi
mov    0x2e25(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x18(%rbp),%rdi
call   1060 <ftell@plt>
mov    %rax,-0x28(%rbp)
mov    -0x28(%rbp),%rdi
call   1070 <malloc@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
jne    1221 <read_from_file+0xa1>
jmp    11f6 <read_from_file+0x76>
mov    0x2ddb(%rip),%rax
mov    (%rax),%edi
lea    0xdfc(%rip),%rsi
lea    0xe21(%rip),%rdx
mov    $0x11d,%ecx
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   10a0 <exit@plt>
mov    -0x18(%rbp),%rdi
mov    0x2da4(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rdx
mov    -0x18(%rbp),%rcx
mov    $0x1,%esi
call   1030 <fread@plt>
mov    -0x18(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x20(%rbp),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<read_from_file>:
push   %r15
push   %r14
push   %rbx
lea    0xe74(%rip),%rsi
call   1090 <fopen@plt>
test   %rax,%rax
je     11f7 <read_from_file+0x77>
mov    %rax,%rbx
mov    0x2e48(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %rbx,%rdi
call   1060 <ftell@plt>
mov    %rax,%r15
mov    %rax,%rdi
call   1070 <malloc@plt>
test   %rax,%rax
je     1203 <read_from_file+0x83>
mov    %rax,%r14
mov    0x2e02(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    %r14,%rdi
mov    $0x1,%esi
mov    %r15,%rdx
mov    %rbx,%rcx
call   1030 <fread@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
jmp    11fa <read_from_file+0x7a>
xor    %r14d,%r14d
mov    %r14,%rax
pop    %rbx
pop    %r14
pop    %r15
ret
mov    0x2dce(%rip),%rax
mov    (%rax),%edi
lea    0xdef(%rip),%rsi
lea    0xe14(%rip),%rdx
mov    $0x11d,%ecx
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
@stderr = global i32 0
@.str.1 = [44 x i8] c"Insufficient memory, file %s, near line %d\0A\00"
@.str.2 = [138 x i8] c"/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/vmxdev/sidmat/refs/heads/master/sidmat_common.h\00"
@SEEK_SET = global i32 0
define i8* @read_from_file(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
%4 = alloca i32*
%5 = alloca i8*
%6 = alloca i64
store i8* %0, i8** %3
%7 = load i8*, i8** %3
%8 = call i32* @fopen(i8* %7, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %8, i32** %4
%9 = load i32*, i32** %4
%10 = icmp ne i32* %9, null
br i1 %10, label %12, label %11
11: ; preds = %1
store i8* null, i8** %2
br label %39
12: ; preds = %1
%13 = load i32*, i32** %4
%14 = load i32, i32* @SEEK_END
%15 = call i32 @fseek(i32* %13, i32 0, i32 %14)
%16 = load i32*, i32** %4
%17 = call i64 @ftell(i32* %16)
store i64 %17, i64* %6
%18 = load i64, i64* %6
%19 = call i8* @malloc(i64 %18)
store i8* %19, i8** %5
%20 = load i8*, i8** %5
%21 = icmp ne i8* %20, null
br i1 %21, label %28, label %22
22: ; preds = %12
br label %23
23: ; preds = %22
%24 = load i32, i32* @stderr
%25 = call i32 @fprintf(i32 %24, i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([138 x i8], [138 x i8]* @.str.2, i64 0, i64 0), i32 285)
%26 = call i32 @exit(i32 1)
unreachable
27: ; No predecessors!
br label %28
28: ; preds = %27, %12
%29 = load i32*, i32** %4
%30 = load i32, i32* @SEEK_SET
%31 = call i32 @fseek(i32* %29, i32 0, i32 %30)
%32 = load i8*, i8** %5
%33 = load i64, i64* %6
%34 = load i32*, i32** %4
%35 = call i32 @fread(i8* %32, i32 1, i64 %33, i32* %34)
%36 = load i32*, i32** %4
%37 = call i32 @fclose(i32* %36)
%38 = load i8*, i8** %5
store i8* %38, i8** %2
br label %39
39: ; preds = %28, %11
%40 = load i8*, i8** %2
ret i8* %40
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
@stderr = global i32 0
@.str.1 = [44 x i8] c"Insufficient memory, file %s, near line %d\0A\00"
@.str.2 = [138 x i8] c"/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/vmxdev/sidmat/refs/heads/master/sidmat_common.h\00"
@SEEK_SET = global i32 0
define noalias i8* @read_from_file(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 = icmp eq i32* %2, null
br i1 %3, label %19, 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 = tail call i8* @malloc(i64 %7)
%9 = icmp eq i8* %8, null
br i1 %9, label %10, label %14
10: ; preds = %4
%11 = load i32, i32* @stderr
%12 = tail call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([138 x i8], [138 x i8]* @.str.2, i64 0, i64 0), i32 285)
%13 = tail call i32 @exit(i32 1)
unreachable
14: ; preds = %4
%15 = load i32, i32* @SEEK_SET
%16 = tail call i32 @fseek(i32* %2, i32 0, i32 %15)
%17 = tail call i32 @fread(i8* %8, i32 1, i64 %7, i32* %2)
%18 = tail call i32 @fclose(i32* %2)
br label %19
19: ; preds = %1, %14
%20 = phi i8* [ %8, %14 ], [ null, %1 ]
ret i8* %20
}