#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 *, ...);
int main(int argc, char *argv[]) {
  if (argc > 1) {
    while (*argv[1]) {
      printf("[%c]", *argv[1]++);
    }
    printf("\n");
  }
  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   $0x1,-0x8(%rbp)
jle    117d <main+0x6d>
jmp    1135 <main+0x25>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
cmpb   $0x0,(%rax)
je     116f <main+0x5f>
mov    -0x10(%rbp),%rcx
mov    0x8(%rcx),%rax
mov    %rax,%rdx
add    $0x1,%rdx
mov    %rdx,0x8(%rcx)
movsbl (%rax),%esi
lea    0xe9d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1135 <main+0x25>
lea    0xe8f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
cmp    $0x2,%edi
jl     116f <main+0x4f>
push   %r14
push   %rbx
push   %rax
mov    %rsi,%rbx
mov    0x8(%rsi),%rax
cmpb   $0x0,(%rax)
je     115e <main+0x3e>
lea    0xec4(%rip),%r14
nopl   0x0(%rax)
lea    0x1(%rax),%rcx
mov    %rcx,0x8(%rbx)
movsbl (%rax),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%rbx),%rax
cmpb   $0x0,(%rax)
jne    1140 <main+0x20>
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x8,%rsp
pop    %rbx
pop    %r14
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [5 x i8] c"[%c]\00"
@.str.1 = [2 x i8] c"\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 sgt i32 %6, 1
br i1 %7, label %8, label %25
8: ; preds = %2
br label %9
9: ; preds = %15, %8
%10 = load i8**, i8*** %5
%11 = getelementptr inbounds i8*, i8** %10, i64 1
%12 = load i8*, i8** %11
%13 = load i8, i8* %12
%14 = icmp ne i8 %13, 0
br i1 %14, label %15, label %23
15: ; preds = %9
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 1
%18 = load i8*, i8** %17
%19 = getelementptr inbounds i8, i8* %18, i32 1
store i8* %19, i8** %17
%20 = load i8, i8* %18
%21 = sext i8 %20 to i32
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %21)
br label %9
23: ; preds = %9
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %25
25: ; preds = %23, %2
ret i32 0
}

LLVM IR (-O2):
@.str = [5 x i8] c"[%c]\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp sgt i32 %0, 1
br i1 %3, label %4, label %20
4: ; preds = %2
%5 = getelementptr inbounds i8*, i8** %1, i64 1
%6 = load i8*, i8** %5
%7 = load i8, i8* %6
%8 = icmp eq i8 %7, 0
br i1 %8, label %18, label %9
9: ; preds = %4, %9
%10 = phi i8* [ %15, %9 ], [ %6, %4 ]
%11 = getelementptr inbounds i8, i8* %10, i64 1
store i8* %11, i8** %5
%12 = load i8, i8* %10
%13 = sext i8 %12 to i32
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = load i8*, i8** %5
%16 = load i8, i8* %15
%17 = icmp eq i8 %16, 0
br i1 %17, label %18, label %9
18: ; preds = %9, %4
%19 = tail call i32 @putchar(i32 10)
br label %20
20: ; preds = %18, %2
ret i32 0
}