#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 */

/* Variables and functions */
int /*<<< orphan*/ fputs(char *, int /*<<< orphan*/);
int /*<<< orphan*/ perror(char *);
scalar_t__ remove(char *);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  if (argc != 2) {
    fputs("Usage: rm <filename>\n", stderr);
    return 1;
  }
  if (remove(*++argv) != 0) {
    perror("rm");
    return 1;
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     1171 <main+0x41>
mov    0x2e89(%rip),%rax
mov    (%rax),%esi
lea    0xea0(%rip),%rdi
call   1040 <fputs@plt>
movl   $0x1,-0x4(%rbp)
jmp    11b2 <main+0x82>
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x8,%rcx
mov    %rcx,-0x10(%rbp)
mov    0x8(%rax),%rdi
call   1030 <remove@plt>
cmp    $0x0,%rax
je     11ab <main+0x7b>
lea    0xe7c(%rip),%rdi
call   1050 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    11b2 <main+0x82>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
jne    114b <main+0x1b>
mov    0x8(%rsi),%rdi
call   1030 <remove@plt>
mov    %rax,%rcx
xor    %eax,%eax
test   %rcx,%rcx
jne    1167 <main+0x37>
pop    %rcx
ret
mov    0x2e8e(%rip),%rax
mov    (%rax),%esi
lea    0xea5(%rip),%rdi
call   1040 <fputs@plt>
mov    $0x1,%eax
pop    %rcx
ret
lea    0xea8(%rip),%rdi
call   1050 <perror@plt>
jmp    1160 <main+0x30>

LLVM IR (-O0):
@.str = [22 x i8] c"Usage: rm <filename>\0A\00"
@stderr = global i32 0
@.str.1 = [3 x i8] c"rm\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 2
br i1 %7, label %8, label %11
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = call i32 @fputs(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i32 %9)
store i32 1, i32* %3
br label %20
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i32 1
store i8** %13, i8*** %5
%14 = load i8*, i8** %13
%15 = call i64 @remove(i8* %14)
%16 = icmp ne i64 %15, 0
br i1 %16, label %17, label %19
17: ; preds = %11
%18 = call i32 @perror(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
store i32 1, i32* %3
br label %20
19: ; preds = %11
store i32 0, i32* %3
br label %20
20: ; preds = %19, %17, %8
%21 = load i32, i32* %3
ret i32 %21
}

LLVM IR (-O2):
@.str = [22 x i8] c"Usage: rm <filename>\0A\00"
@stderr = global i32 0
@.str.1 = [3 x i8] c"rm\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %7, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = tail call i32 @fputs(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i32 %5)
br label %14
7: ; preds = %2
%8 = getelementptr inbounds i8*, i8** %1, i64 1
%9 = load i8*, i8** %8
%10 = tail call i64 @remove(i8* %9)
%11 = icmp eq i64 %10, 0
br i1 %11, label %14, label %12
12: ; preds = %7
%13 = tail call i32 @perror(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
br label %14
14: ; preds = %7, %12, %4
%15 = phi i32 [ 1, %4 ], [ 1, %12 ], [ 0, %7 ]
ret i32 %15
}