#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 errno;
int /*<<< orphan*/ printf(char *, ...);
int remove(char *);
char *strerror(int);
int main(int argc, char **argv) {
  if (argc < 2) {
    printf("rm: Need filename\n");
  }
  int error = 0;
  for (int i = 1; i < argc; i++) {
    error = remove(argv[i]);
    if (error) {
      printf("rm: %s\n", strerror(errno));
      error = errno;
      break;
    }
  }
  return error;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    115e <main+0x2e>
lea    0xea9(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x14(%rbp)
movl   $0x1,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11d9 <main+0xa9>
mov    -0x10(%rbp),%rax
movslq -0x18(%rbp),%rcx
mov    (%rax,%rcx,8),%rdi
call   1030 <remove@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0x0,-0x14(%rbp)
je     11c6 <main+0x96>
mov    0x2e43(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
mov    %rax,%rsi
lea    0xe65(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    0x2e24(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x14(%rbp)
jmp    11d9 <main+0xa9>
jmp    11cb <main+0x9b>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    116c <main+0x3c>
mov    -0x14(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
cmp    $0x1,%edi
jg     115a <main+0x1a>
lea    0xeb7(%rip),%rdi
call   1040 <puts@plt>
xor    %eax,%eax
jmp    11ab <main+0x6b>
mov    %rsi,%r14
mov    %edi,%r15d
mov    $0x1,%ebx
cs nopw 0x0(%rax,%rax,1)
nop
mov    (%r14,%rbx,8),%rdi
call   1030 <remove@plt>
test   %eax,%eax
jne    118a <main+0x4a>
add    $0x1,%rbx
cmp    %rbx,%r15
jne    1170 <main+0x30>
xor    %eax,%eax
jmp    11ab <main+0x6b>
mov    0x2e4f(%rip),%rbx
mov    (%rbx),%edi
call   1060 <strerror@plt>
lea    0xe61(%rip),%rdi
mov    %rax,%rsi
xor    %eax,%eax
call   1050 <printf@plt>
mov    (%rbx),%eax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [19 x i8] c"rm: Need filename\0A\00"
@.str.1 = [8 x i8] c"rm: %s\0A\00"
@errno = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp slt i32 %8, 2
br i1 %9, label %10, label %12
10: ; preds = %2
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str, i64 0, i64 0))
br label %12
12: ; preds = %10, %2
store i32 0, i32* %6
store i32 1, i32* %7
br label %13
13: ; preds = %32, %12
%14 = load i32, i32* %7
%15 = load i32, i32* %4
%16 = icmp slt i32 %14, %15
br i1 %16, label %17, label %35
17: ; preds = %13
%18 = load i8**, i8*** %5
%19 = load i32, i32* %7
%20 = sext i32 %19 to i64
%21 = getelementptr inbounds i8*, i8** %18, i64 %20
%22 = load i8*, i8** %21
%23 = call i32 @remove(i8* %22)
store i32 %23, i32* %6
%24 = load i32, i32* %6
%25 = icmp ne i32 %24, 0
br i1 %25, label %26, label %31
26: ; preds = %17
%27 = load i32, i32* @errno
%28 = call i8* @strerror(i32 %27)
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8* %28)
%30 = load i32, i32* @errno
store i32 %30, i32* %6
br label %35
31: ; preds = %17
br label %32
32: ; preds = %31
%33 = load i32, i32* %7
%34 = add nsw i32 %33, 1
store i32 %34, i32* %7
br label %13
35: ; preds = %26, %13
%36 = load i32, i32* %6
ret i32 %36
}

LLVM IR (-O2):
@.str.1 = [8 x i8] c"rm: %s\0A\00"
@errno = global i32 0
@str = [18 x i8] c"rm: Need filename\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %6
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @str, i64 0, i64 0))
br label %22
6: ; preds = %2
%7 = zext i32 %0 to i64
br label %10
8: ; preds = %10
%9 = icmp eq i64 %16, %7
br i1 %9, label %22, label %10
10: ; preds = %6, %8
%11 = phi i64 [ 1, %6 ], [ %16, %8 ]
%12 = getelementptr inbounds i8*, i8** %1, i64 %11
%13 = load i8*, i8** %12
%14 = tail call i32 @remove(i8* %13)
%15 = icmp eq i32 %14, 0
%16 = add nuw nsw i64 %11, 1
br i1 %15, label %8, label %17
17: ; preds = %10
%18 = load i32, i32* @errno
%19 = tail call i8* @strerror(i32 %18)
%20 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8* %19)
%21 = load i32, i32* @errno
br label %22
22: ; preds = %8, %4, %17
%23 = phi i32 [ %21, %17 ], [ 0, %4 ], [ 0, %8 ]
ret i32 %23
}