#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 strlen(char *);
int main(int argc, char *argv[]) {
  printf("\n");
  for (int i = 0; i < argc; i++) {
    for (int j = 0, n = strlen(argv[i]); j < n; j++)
      printf("%c\n", argv[i][j]);
    printf("\n");
  }
}


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)
lea    0xec5(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11ca <main+0xaa>
movl   $0x0,-0x18(%rbp)
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdi
call   1030 <strlen@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x1c(%rbp),%eax
jge    11ae <main+0x8e>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movslq -0x18(%rbp),%rcx
movsbl (%rax,%rcx,1),%esi
lea    0xe67(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    1172 <main+0x52>
lea    0xe4d(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    114b <main+0x2b>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r12
mov    %edi,%ebp
mov    $0xa,%edi
call   1030 <putchar@plt>
test   %ebp,%ebp
jle    11ad <main+0x7d>
mov    %ebp,%r15d
lea    0xea8(%rip),%r14
xor    %r13d,%r13d
jmp    1173 <main+0x43>
nopl   (%rax)
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%r13
cmp    %r15,%r13
je     11ad <main+0x7d>
mov    (%r12,%r13,8),%rdi
call   1040 <strlen@plt>
test   %eax,%eax
jle    1160 <main+0x30>
mov    %eax,%ebx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
xchg   %ax,%ax
mov    (%r12,%r13,8),%rax
movsbl (%rax,%rbp,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
add    $0x1,%rbp
cmp    %rbp,%rbx
jne    1190 <main+0x60>
jmp    1160 <main+0x30>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [4 x i8] c"%c\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %6
br label %10
10: ; preds = %42, %2
%11 = load i32, i32* %6
%12 = load i32, i32* %4
%13 = icmp slt i32 %11, %12
br i1 %13, label %14, label %45
14: ; preds = %10
store i32 0, i32* %7
%15 = load i8**, i8*** %5
%16 = load i32, i32* %6
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds i8*, i8** %15, i64 %17
%19 = load i8*, i8** %18
%20 = call i32 @strlen(i8* %19)
store i32 %20, i32* %8
br label %21
21: ; preds = %37, %14
%22 = load i32, i32* %7
%23 = load i32, i32* %8
%24 = icmp slt i32 %22, %23
br i1 %24, label %25, label %40
25: ; preds = %21
%26 = load i8**, i8*** %5
%27 = load i32, i32* %6
%28 = sext i32 %27 to i64
%29 = getelementptr inbounds i8*, i8** %26, i64 %28
%30 = load i8*, i8** %29
%31 = load i32, i32* %7
%32 = sext i32 %31 to i64
%33 = getelementptr inbounds i8, i8* %30, i64 %32
%34 = load i8, i8* %33
%35 = sext i8 %34 to i32
%36 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %35)
br label %37
37: ; preds = %25
%38 = load i32, i32* %7
%39 = add nsw i32 %38, 1
store i32 %39, i32* %7
br label %21
40: ; preds = %21
%41 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
br label %42
42: ; preds = %40
%43 = load i32, i32* %6
%44 = add nsw i32 %43, 1
store i32 %44, i32* %6
br label %10
45: ; preds = %10
%46 = load i32, i32* %3
ret i32 %46
}

LLVM IR (-O2):
@.str.1 = [4 x i8] c"%c\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = tail call i32 @putchar(i32 10)
%4 = icmp sgt i32 %0, 0
br i1 %4, label %5, label %7
5: ; preds = %2
%6 = zext i32 %0 to i64
br label %8
7: ; preds = %16, %2
ret i32 0
8: ; preds = %5, %16
%9 = phi i64 [ 0, %5 ], [ %18, %16 ]
%10 = getelementptr inbounds i8*, i8** %1, i64 %9
%11 = load i8*, i8** %10
%12 = tail call i32 @strlen(i8* %11)
%13 = icmp sgt i32 %12, 0
br i1 %13, label %14, label %16
14: ; preds = %8
%15 = zext i32 %12 to i64
br label %20
16: ; preds = %20, %8
%17 = tail call i32 @putchar(i32 10)
%18 = add nuw nsw i64 %9, 1
%19 = icmp eq i64 %18, %6
br i1 %19, label %7, label %8
20: ; preds = %14, %20
%21 = phi i64 [ 0, %14 ], [ %27, %20 ]
%22 = load i8*, i8** %10
%23 = getelementptr inbounds i8, i8* %22, i64 %21
%24 = load i8, i8* %23
%25 = sext i8 %24 to i32
%26 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %25)
%27 = add nuw nsw i64 %21, 1
%28 = icmp eq i64 %27, %15
br i1 %28, label %16, label %20
}