#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*/ print_dir(char *);
int /*<<< orphan*/ usage();
int main(int argc, char *argv[]) {
  if (argc == 1) {
    usage();
    return 1;
  }
  for (int i = 1; i < argc; ++i)
    print_dir(argv[i]);
  return 0;
}


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   $0x1,-0x8(%rbp)
jne    1153 <main+0x33>
mov    $0x0,%al
call   1040 <usage@plt>
movl   $0x1,-0x4(%rbp)
jmp    118c <main+0x6c>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1185 <main+0x65>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdi
call   1030 <print_dir@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    115a <main+0x3a>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
cmp    $0x1,%edi
jne    113b <main+0x1b>
xor    %eax,%eax
call   1040 <usage@plt>
mov    $0x1,%r14d
jmp    1162 <main+0x42>
xor    %r14d,%r14d
cmp    $0x2,%edi
jl     1162 <main+0x42>
mov    %rsi,%r15
mov    %edi,%ebp
mov    $0x1,%ebx
nopl   (%rax)
mov    (%r15,%rbx,8),%rdi
call   1030 <print_dir@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1150 <main+0x30>
mov    %r14d,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp eq i32 %7, 1
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 (...) @usage()
store i32 1, i32* %3
br label %27
11: ; preds = %2
store i32 1, i32* %6
br label %12
12: ; preds = %23, %11
%13 = load i32, i32* %6
%14 = load i32, i32* %4
%15 = icmp slt i32 %13, %14
br i1 %15, label %16, label %26
16: ; preds = %12
%17 = load i8**, i8*** %5
%18 = load i32, i32* %6
%19 = sext i32 %18 to i64
%20 = getelementptr inbounds i8*, i8** %17, i64 %19
%21 = load i8*, i8** %20
%22 = call i32 @print_dir(i8* %21)
br label %23
23: ; preds = %16
%24 = load i32, i32* %6
%25 = add nsw i32 %24, 1
store i32 %25, i32* %6
br label %12
26: ; preds = %12
store i32 0, i32* %3
br label %27
27: ; preds = %26, %9
%28 = load i32, i32* %3
ret i32 %28
}

LLVM IR (-O2):
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 1
br i1 %3, label %8, label %4
4: ; preds = %2
%5 = icmp sgt i32 %0, 1
br i1 %5, label %6, label %17
6: ; preds = %4
%7 = zext i32 %0 to i64
br label %10
8: ; preds = %2
%9 = tail call i32 (...) @usage()
br label %17
10: ; preds = %6, %10
%11 = phi i64 [ 1, %6 ], [ %15, %10 ]
%12 = getelementptr inbounds i8*, i8** %1, i64 %11
%13 = load i8*, i8** %12
%14 = tail call i32 @print_dir(i8* %13)
%15 = add nuw nsw i64 %11, 1
%16 = icmp eq i64 %15, %7
br i1 %16, label %17, label %10
17: ; preds = %10, %4, %8
%18 = phi i32 [ 1, %8 ], [ 0, %4 ], [ 0, %10 ]
ret i32 %18
}