#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*/ printf(char *, char *);
scalar_t__ unlink(char *);
int main(int argc, char *argv[]) {
  if (argc < 2) {
    printf("Usage: %s: file\n", argv[0]);
    return 1;
  }
  if (unlink(argv[1]) < 0) {
    printf("Cannot remove %s\n", argv[1]);
    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)
jge    115f <main+0x3f>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xeb2(%rip),%rdi
call   1040 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    119d <main+0x7d>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <unlink@plt>
cmp    $0x0,%rax
jge    1196 <main+0x76>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rsi
lea    0xe8c(%rip),%rdi
call   1040 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    119d <main+0x7d>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x2,%edi
jge    1132 <main+0x12>
lea    0xed0(%rip),%rdi
jmp    1152 <main+0x32>
mov    0x8(%rbx),%rdi
call   1030 <unlink@plt>
mov    %rax,%rcx
xor    %eax,%eax
test   %rcx,%rcx
js     1147 <main+0x27>
pop    %rbx
ret
add    $0x8,%rbx
lea    0xebf(%rip),%rdi
mov    (%rbx),%rsi
call   1040 <printf@plt>
mov    $0x1,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Usage: %s: file\0A\00"
@.str.1 = [18 x i8] c"Cannot remove %s\0A\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 slt i32 %6, 2
br i1 %7, label %8, label %13
8: ; preds = %2
%9 = load i8**, i8*** %5
%10 = getelementptr inbounds i8*, i8** %9, i64 0
%11 = load i8*, i8** %10
%12 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8* %11)
store i32 1, i32* %3
br label %25
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i64 @unlink(i8* %16)
%18 = icmp slt i64 %17, 0
br i1 %18, label %19, label %24
19: ; preds = %13
%20 = load i8**, i8*** %5
%21 = getelementptr inbounds i8*, i8** %20, i64 1
%22 = load i8*, i8** %21
%23 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0), i8* %22)
store i32 1, i32* %3
br label %25
24: ; preds = %13
store i32 0, i32* %3
br label %25
25: ; preds = %24, %19, %8
%26 = load i32, i32* %3
ret i32 %26
}

LLVM IR (-O2):
@.str = [17 x i8] c"Usage: %s: file\0A\00"
@.str.1 = [18 x i8] c"Cannot remove %s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %9, label %4
4: ; preds = %2
%5 = getelementptr inbounds i8*, i8** %1, i64 1
%6 = load i8*, i8** %5
%7 = tail call i64 @unlink(i8* %6)
%8 = icmp slt i64 %7, 0
br i1 %8, label %9, label %14
9: ; preds = %4, %2
%10 = phi i8** [ %1, %2 ], [ %5, %4 ]
%11 = phi i8* [ getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), %2 ], [ getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0), %4 ]
%12 = load i8*, i8** %10
%13 = tail call i32 @printf(i8* %11, i8* %12)
br label %14
14: ; preds = %9, %4
%15 = phi i32 [ 0, %4 ], [ 1, %9 ]
ret i32 %15
}