#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*/ EXIT_SUCCESS;
int /*<<< orphan*/ err_exit(char *, char *);
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ print_procs_by_login(char *);
scalar_t__ strcmp(char *, char *);
int main(int argc, char *argv[]) {
  if ((argc != 2) || strcmp(argv[1], "--help") == 0) {
    err_exit("Usage: %s login\n", argv[0]);
  }
  print_procs_by_login(argv[1]);
  exit(EXIT_SUCCESS);
}


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)
jne    117e <main+0x3e>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
lea    0xe91(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1191 <main+0x51>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xe7b(%rip),%rdi
call   1040 <err_exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1060 <print_procs_by_login@plt>
mov    0x2e3b(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x2,%edi
jne    115e <main+0x1e>
mov    0x8(%rbx),%rdi
lea    0xeac(%rip),%rsi
call   1030 <strcmp@plt>
test   %rax,%rax
jne    116d <main+0x2d>
mov    (%rbx),%rsi
lea    0xe9f(%rip),%rdi
call   1040 <err_exit@plt>
mov    0x8(%rbx),%rdi
call   1060 <print_procs_by_login@plt>
mov    0x2e63(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@.str = [7 x i8] c"--help\00"
@.str.1 = [17 x i8] c"Usage: %s login\0A\00"
@EXIT_SUCCESS = global i32 0
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 %14, label %8
8: ; preds = %2
%9 = load i8**, i8*** %5
%10 = getelementptr inbounds i8*, i8** %9, i64 1
%11 = load i8*, i8** %10
%12 = call i64 @strcmp(i8* %11, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%13 = icmp eq i64 %12, 0
br i1 %13, label %14, label %19
14: ; preds = %8, %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 0
%17 = load i8*, i8** %16
%18 = call i32 @err_exit(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i8* %17)
br label %19
19: ; preds = %14, %8
%20 = load i8**, i8*** %5
%21 = getelementptr inbounds i8*, i8** %20, i64 1
%22 = load i8*, i8** %21
%23 = call i32 @print_procs_by_login(i8* %22)
%24 = load i32, i32* @EXIT_SUCCESS
%25 = call i32 @exit(i32 %24)
unreachable
}

LLVM IR (-O2):
@.str = [7 x i8] c"--help\00"
@.str.1 = [17 x i8] c"Usage: %s login\0A\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %4, label %9
4: ; preds = %2
%5 = getelementptr inbounds i8*, i8** %1, i64 1
%6 = load i8*, i8** %5
%7 = tail call i64 @strcmp(i8* %6, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%8 = icmp eq i64 %7, 0
br i1 %8, label %9, label %12
9: ; preds = %4, %2
%10 = load i8*, i8** %1
%11 = tail call i32 @err_exit(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i8* %10)
br label %12
12: ; preds = %9, %4
%13 = getelementptr inbounds i8*, i8** %1, i64 1
%14 = load i8*, i8** %13
%15 = tail call i32 @print_procs_by_login(i8* %14)
%16 = load i32, i32* @EXIT_SUCCESS
%17 = tail call i32 @exit(i32 %16)
unreachable
}