#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int fread(char *, int, int, int /*<<< orphan*/ *);
int filecontents(char *path, char *obuf, int osize) {
  int got;
  FILE *fd;
  if (!(fd = fopen(path, "r"))) {
    return -1;
  }
  got = fread(obuf, sizeof(char), osize - 1, fd);
  fclose(fd);
  obuf[got] = '\0';
  return got;
}


x86 assembly (clang, -O0):
<filecontents>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    %edx,-0x1c(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xeb2(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x28(%rbp)
cmp    $0x0,%rax
jne    116d <filecontents+0x3d>
movl   $0xffffffff,-0x4(%rbp)
jmp    11a3 <filecontents+0x73>
mov    -0x18(%rbp),%rdi
mov    -0x1c(%rbp),%edx
sub    $0x1,%edx
mov    -0x28(%rbp),%rcx
mov    $0x1,%esi
call   1030 <fread@plt>
mov    %eax,-0x20(%rbp)
mov    -0x28(%rbp),%rdi
call   1040 <fclose@plt>
mov    -0x18(%rbp),%rax
movslq -0x20(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
mov    -0x20(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<filecontents>:
push   %rbp
push   %r14
push   %rbx
mov    %edx,%ebp
mov    %rsi,%r14
lea    0xec0(%rip),%rsi
call   1050 <fopen@plt>
test   %rax,%rax
je     1176 <filecontents+0x46>
mov    %rax,%rbx
add    $0xffffffff,%ebp
mov    %r14,%rdi
mov    $0x1,%esi
mov    %ebp,%edx
mov    %rax,%rcx
call   1030 <fread@plt>
mov    %eax,%ebp
mov    %rbx,%rdi
call   1040 <fclose@plt>
movslq %ebp,%rax
movb   $0x0,(%r14,%rax,1)
jmp    117b <filecontents+0x4b>
mov    $0xffffffff,%ebp
mov    %ebp,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
define i32 @filecontents(i8* %0, i8* %1, i32 %2) {
%4 = alloca i32
%5 = alloca i8*
%6 = alloca i8*
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32*
store i8* %0, i8** %5
store i8* %1, i8** %6
store i32 %2, i32* %7
%10 = load i8*, i8** %5
%11 = call i32* @fopen(i8* %10, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %11, i32** %9
%12 = icmp ne i32* %11, null
br i1 %12, label %14, label %13
13: ; preds = %3
store i32 -1, i32* %4
br label %27
14: ; preds = %3
%15 = load i8*, i8** %6
%16 = load i32, i32* %7
%17 = sub nsw i32 %16, 1
%18 = load i32*, i32** %9
%19 = call i32 @fread(i8* %15, i32 1, i32 %17, i32* %18)
store i32 %19, i32* %8
%20 = load i32*, i32** %9
%21 = call i32 @fclose(i32* %20)
%22 = load i8*, i8** %6
%23 = load i32, i32* %8
%24 = sext i32 %23 to i64
%25 = getelementptr inbounds i8, i8* %22, i64 %24
store i8 0, i8* %25
%26 = load i32, i32* %8
store i32 %26, i32* %4
br label %27
27: ; preds = %14, %13
%28 = load i32, i32* %4
ret i32 %28
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
define i32 @filecontents(i8* nocapture %0, i8* nocapture %1, i32 %2) {
%4 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%5 = icmp eq i32* %4, null
br i1 %5, label %12, label %6
6: ; preds = %3
%7 = add nsw i32 %2, -1
%8 = tail call i32 @fread(i8* %1, i32 1, i32 %7, i32* %4)
%9 = tail call i32 @fclose(i32* %4)
%10 = sext i32 %8 to i64
%11 = getelementptr inbounds i8, i8* %1, i64 %10
store i8 0, i8* %11
br label %12
12: ; preds = %3, %6
%13 = phi i32 [ %8, %6 ], [ -1, %3 ]
ret i32 %13
}