#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*/ perror(int /*<<< orphan*/ *);
int /*<<< orphan*/ printf(char *, char *);
scalar_t__ remove_mount(char *);
int main(int argc, char *argv[]) {
  if (argc < 2) {
    printf("Usage: %s MOUNTPOINT\n", argv[0]);
    return 1;
  }
  if (remove_mount(argv[1]) != 0) {
    perror(NULL);
    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    116f <main+0x3f>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xea2(%rip),%rdi
call   1030 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11a2 <main+0x72>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <remove_mount@plt>
cmp    $0x0,%rax
je     119b <main+0x6b>
xor    %eax,%eax
mov    %eax,%edi
call   1040 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    11a2 <main+0x72>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x1,%edi
jg     114c <main+0x1c>
mov    (%rsi),%rsi
lea    0xec0(%rip),%rdi
call   1030 <printf@plt>
mov    $0x1,%eax
jmp    115f <main+0x2f>
mov    0x8(%rsi),%rdi
call   1050 <remove_mount@plt>
mov    %rax,%rcx
xor    %eax,%eax
test   %rcx,%rcx
jne    1161 <main+0x31>
pop    %rcx
ret
xor    %edi,%edi
call   1040 <perror@plt>
jmp    1145 <main+0x15>

LLVM IR (-O0):
@.str = [22 x i8] c"Usage: %s MOUNTPOINT\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 ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %11)
store i32 1, i32* %3
br label %22
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i64 @remove_mount(i8* %16)
%18 = icmp ne i64 %17, 0
br i1 %18, label %19, label %21
19: ; preds = %13
%20 = call i32 @perror(i32* null)
store i32 1, i32* %3
br label %22
21: ; preds = %13
store i32 0, i32* %3
br label %22
22: ; preds = %21, %19, %8
%23 = load i32, i32* %3
ret i32 %23
}

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