#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 *, ...);
void dump_stuff_be_noeol(void *x, unsigned int size) {
  unsigned int i;
  for (i = 0; i < size; i++) {
    printf("%.2x", ((unsigned char *)x)[i ^ 3]);
    if ((i % 4) == 3)
      printf(" ");
  }
}


x86 assembly (clang, -O0):
<dump_stuff_be_noeol>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jae    1180 <dump_stuff_be_noeol+0x70>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%ecx
xor    $0x3,%ecx
mov    %ecx,%ecx
movzbl (%rax,%rcx,1),%esi
lea    0xeb7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
and    $0x3,%eax
cmp    $0x3,%eax
jne    116d <dump_stuff_be_noeol+0x5d>
lea    0xe9f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1172 <dump_stuff_be_noeol+0x62>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1126 <dump_stuff_be_noeol+0x16>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dump_stuff_be_noeol>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
test   %esi,%esi
je     1170 <dump_stuff_be_noeol+0x50>
mov    %esi,%ebx
mov    %rdi,%r14
lea    0xec9(%rip),%r15
xor    %ebp,%ebp
jmp    1147 <dump_stuff_be_noeol+0x27>
nopl   0x0(%rax,%rax,1)
add    $0x1,%ebp
cmp    %ebp,%ebx
je     1170 <dump_stuff_be_noeol+0x50>
mov    %ebp,%eax
xor    $0x3,%rax
movzbl (%r14,%rax,1),%esi
mov    %r15,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %ebp,%eax
not    %eax
test   $0x3,%al
jne    1140 <dump_stuff_be_noeol+0x20>
mov    $0x20,%edi
call   1030 <putchar@plt>
jmp    1140 <dump_stuff_be_noeol+0x20>
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [5 x i8] c"%.2x\00"
@.str.1 = [2 x i8] c" \00"
define void @dump_stuff_be_noeol(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
store i32 0, i32* %5
br label %6
6: ; preds = %25, %2
%7 = load i32, i32* %5
%8 = load i32, i32* %4
%9 = icmp ult i32 %7, %8
br i1 %9, label %10, label %28
10: ; preds = %6
%11 = load i8*, i8** %3
%12 = load i32, i32* %5
%13 = xor i32 %12, 3
%14 = zext i32 %13 to i64
%15 = getelementptr inbounds i8, i8* %11, i64 %14
%16 = load i8, i8* %15
%17 = zext i8 %16 to i32
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %17)
%19 = load i32, i32* %5
%20 = urem i32 %19, 4
%21 = icmp eq i32 %20, 3
br i1 %21, label %22, label %24
22: ; preds = %10
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %24
24: ; preds = %22, %10
br label %25
25: ; preds = %24
%26 = load i32, i32* %5
%27 = add i32 %26, 1
store i32 %27, i32* %5
br label %6
28: ; preds = %6
ret void
}

LLVM IR (-O2):
@.str = [5 x i8] c"%.2x\00"
define void @dump_stuff_be_noeol(i8* nocapture %0, i32 %1) {
%3 = icmp eq i32 %1, 0
br i1 %3, label %19, label %4
4: ; preds = %2, %16
%5 = phi i32 [ %17, %16 ], [ 0, %2 ]
%6 = xor i32 %5, 3
%7 = zext i32 %6 to i64
%8 = getelementptr inbounds i8, i8* %0, i64 %7
%9 = load i8, i8* %8
%10 = zext i8 %9 to i32
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %10)
%12 = and i32 %5, 3
%13 = icmp eq i32 %12, 3
br i1 %13, label %14, label %16
14: ; preds = %4
%15 = tail call i32 @putchar(i32 32)
br label %16
16: ; preds = %4, %14
%17 = add nuw i32 %5, 1
%18 = icmp eq i32 %17, %1
br i1 %18, label %19, label %4
19: ; preds = %16, %2
ret void
}