#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char const *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int /*<<< orphan*/ fread(void *, int, size_t, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
size_t ftell(int /*<<< orphan*/ *);
void *malloc(size_t);
int /*<<< orphan*/ stderr;
void *read_file(const char *fname, size_t *len) {
  FILE *f = fopen(fname, "rb");
  if (f == NULL) {
    fprintf(stderr,
            "remotethread"
            " WARNING: "
            "Unable to open %s\n",
            fname);
    return 0;
  }
  fseek(f, 0, SEEK_END);
  *len = ftell(f);
  void *buf = malloc(*len);
  if (buf == NULL) {
    fclose(f);
    fprintf(stderr, "remotethread"
                    " WARNING: "
                    "Out of memory\n");
    return 0;
  }
  fseek(f, 0, SEEK_SET);
  fread(buf, 1, *len, f);
  fclose(f);
  return buf;
}


x86 assembly (clang, -O0):
<read_file>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xe75(%rip),%rsi
call   1090 <fopen@plt>
mov    %rax,-0x20(%rbp)
cmpq   $0x0,-0x20(%rbp)
jne    11c7 <read_file+0x57>
mov    0x2e32(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rdx
lea    0xe50(%rip),%rsi
mov    $0x0,%al
call   1050 <fprintf@plt>
movq   $0x0,-0x8(%rbp)
jmp    1274 <read_file+0x104>
mov    -0x20(%rbp),%rdi
mov    0x2e16(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x20(%rbp),%rdi
call   1060 <ftell@plt>
mov    %rax,%rcx
mov    -0x18(%rbp),%rax
mov    %rcx,(%rax)
mov    -0x18(%rbp),%rax
mov    (%rax),%rdi
call   1070 <malloc@plt>
mov    %rax,-0x28(%rbp)
cmpq   $0x0,-0x28(%rbp)
jne    1236 <read_file+0xc6>
mov    -0x20(%rbp),%rdi
call   1040 <fclose@plt>
mov    0x2dbf(%rip),%rax
mov    (%rax),%edi
lea    0xe0a(%rip),%rsi
mov    $0x0,%al
call   1050 <fprintf@plt>
movq   $0x0,-0x8(%rbp)
jmp    1274 <read_file+0x104>
mov    -0x20(%rbp),%rdi
mov    0x2d8f(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1080 <fseek@plt>
mov    -0x28(%rbp),%rdi
mov    -0x18(%rbp),%rax
mov    (%rax),%rdx
mov    -0x20(%rbp),%rcx
mov    $0x1,%esi
call   1030 <fread@plt>
mov    -0x20(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x28(%rbp),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<read_file>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r15
mov    %rdi,%r12
lea    0xe7b(%rip),%rsi
call   1090 <fopen@plt>
test   %rax,%rax
je     11f0 <read_file+0x80>
mov    %rax,%rbx
mov    0x2e4f(%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     120f <read_file+0x9f>
mov    %rax,%r14
mov    0x2e09(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1080 <fseek@plt>
mov    (%r15),%rdx
mov    %r14,%rdi
mov    $0x1,%esi
mov    %rbx,%rcx
call   1030 <fread@plt>
mov    %rbx,%rdi
call   1040 <fclose@plt>
jmp    1231 <read_file+0xc1>
mov    0x2de1(%rip),%rax
mov    (%rax),%edi
lea    0xe03(%rip),%rsi
xor    %r14d,%r14d
mov    %r12,%rdx
xor    %eax,%eax
call   1050 <fprintf@plt>
jmp    1231 <read_file+0xc1>
mov    %rbx,%rdi
call   1040 <fclose@plt>
mov    0x2dba(%rip),%rax
mov    (%rax),%edi
lea    0xe05(%rip),%rsi
xor    %r14d,%r14d
xor    %eax,%eax
call   1050 <fprintf@plt>
mov    %r14,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
@stderr = global i32 0
@.str.1 = [41 x i8] c"remotethread WARNING: Unable to open %s\0A\00"
@SEEK_END = global i32 0
@.str.2 = [37 x i8] c"remotethread WARNING: Out of memory\0A\00"
@SEEK_SET = global i32 0
define i8* @read_file(i8* %0, i64* %1) {
%3 = alloca i8*
%4 = alloca i8*
%5 = alloca i64*
%6 = alloca i32*
%7 = alloca i8*
store i8* %0, i8** %4
store i64* %1, i64** %5
%8 = load i8*, i8** %4
%9 = call i32* @fopen(i8* %8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %9, i32** %6
%10 = load i32*, i32** %6
%11 = icmp eq i32* %10, null
br i1 %11, label %12, label %16
12: ; preds = %2
%13 = load i32, i32* @stderr
%14 = load i8*, i8** %4
%15 = call i32 (i32, i8*, ...) @fprintf(i32 %13, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.1, i64 0, i64 0), i8* %14)
store i8* null, i8** %3
br label %45
16: ; preds = %2
%17 = load i32*, i32** %6
%18 = load i32, i32* @SEEK_END
%19 = call i32 @fseek(i32* %17, i32 0, i32 %18)
%20 = load i32*, i32** %6
%21 = call i64 @ftell(i32* %20)
%22 = load i64*, i64** %5
store i64 %21, i64* %22
%23 = load i64*, i64** %5
%24 = load i64, i64* %23
%25 = call i8* @malloc(i64 %24)
store i8* %25, i8** %7
%26 = load i8*, i8** %7
%27 = icmp eq i8* %26, null
br i1 %27, label %28, label %33
28: ; preds = %16
%29 = load i32*, i32** %6
%30 = call i32 @fclose(i32* %29)
%31 = load i32, i32* @stderr
%32 = call i32 (i32, i8*, ...) @fprintf(i32 %31, i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.2, i64 0, i64 0))
store i8* null, i8** %3
br label %45
33: ; preds = %16
%34 = load i32*, i32** %6
%35 = load i32, i32* @SEEK_SET
%36 = call i32 @fseek(i32* %34, i32 0, i32 %35)
%37 = load i8*, i8** %7
%38 = load i64*, i64** %5
%39 = load i64, i64* %38
%40 = load i32*, i32** %6
%41 = call i32 @fread(i8* %37, i32 1, i64 %39, i32* %40)
%42 = load i32*, i32** %6
%43 = call i32 @fclose(i32* %42)
%44 = load i8*, i8** %7
store i8* %44, i8** %3
br label %45
45: ; preds = %33, %28, %12
%46 = load i8*, i8** %3
ret i8* %46
}

LLVM IR (-O2):
@.str = [3 x i8] c"rb\00"
@stderr = global i32 0
@.str.1 = [41 x i8] c"remotethread WARNING: Unable to open %s\0A\00"
@SEEK_END = global i32 0
@.str.2 = [37 x i8] c"remotethread WARNING: Out of memory\0A\00"
@SEEK_SET = global i32 0
define noalias i8* @read_file(i8* %0, i64* nocapture %1) {
%3 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%4 = icmp eq i32* %3, null
br i1 %4, label %5, label %8
5: ; preds = %2
%6 = load i32, i32* @stderr
%7 = tail call i32 (i32, i8*, ...) @fprintf(i32 %6, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.1, i64 0, i64 0), i8* %0)
br label %24
8: ; preds = %2
%9 = load i32, i32* @SEEK_END
%10 = tail call i32 @fseek(i32* %3, i32 0, i32 %9)
%11 = tail call i64 @ftell(i32* %3)
store i64 %11, i64* %1
%12 = tail call i8* @malloc(i64 %11)
%13 = icmp eq i8* %12, null
br i1 %13, label %14, label %18
14: ; preds = %8
%15 = tail call i32 @fclose(i32* %3)
%16 = load i32, i32* @stderr
%17 = tail call i32 (i32, i8*, ...) @fprintf(i32 %16, i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.2, i64 0, i64 0))
br label %24
18: ; preds = %8
%19 = load i32, i32* @SEEK_SET
%20 = tail call i32 @fseek(i32* %3, i32 0, i32 %19)
%21 = load i64, i64* %1
%22 = tail call i32 @fread(i8* %12, i32 1, i64 %21, i32* %3)
%23 = tail call i32 @fclose(i32* %3)
br label %24
24: ; preds = %14, %18, %5
%25 = phi i8* [ null, %5 ], [ null, %14 ], [ %12, %18 ]
ret i8* %25
}