#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(unsigned char *buf, unsigned int size) {
  for (unsigned int i = 0; i < size; i++) {
    if (i && i % 16 == 0)
      printf("\n");
    printf("%02X ", buf[i]);
  }
  printf("\n");
}


x86 assembly (clang, -O0):
<dump>:
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+0x70>
cmpl   $0x0,-0x10(%rbp)
je     1159 <dump+0x49>
mov    -0x10(%rbp),%eax
and    $0xf,%eax
cmp    $0x0,%eax
jne    1159 <dump+0x49>
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%ecx
movzbl (%rax,%rcx,1),%esi
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1126 <dump+0x16>
lea    0xe79(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dump>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
test   %esi,%esi
je     1173 <dump+0x53>
mov    %rdi,%r15
mov    %esi,%r12d
lea    0xec7(%rip),%r14
xor    %ebx,%ebx
jmp    1158 <dump+0x38>
nopl   (%rax)
movzbl (%r15,%rbx,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r12
je     1173 <dump+0x53>
test   %rbx,%rbx
je     1140 <dump+0x20>
mov    %ebx,%eax
and    $0xf,%eax
test   %rax,%rax
jne    1140 <dump+0x20>
mov    $0xa,%edi
call   1030 <putchar@plt>
jmp    1140 <dump+0x20>
mov    $0xa,%edi
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [6 x i8] c"%02X \00"
define void @dump(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 = %27, %2
%7 = load i32, i32* %5
%8 = load i32, i32* %4
%9 = icmp ult i32 %7, %8
br i1 %9, label %10, label %30
10: ; preds = %6
%11 = load i32, i32* %5
%12 = icmp ne i32 %11, 0
br i1 %12, label %13, label %19
13: ; preds = %10
%14 = load i32, i32* %5
%15 = urem i32 %14, 16
%16 = icmp eq i32 %15, 0
br i1 %16, label %17, label %19
17: ; preds = %13
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
br label %19
19: ; preds = %17, %13, %10
%20 = load i8*, i8** %3
%21 = load i32, i32* %5
%22 = zext i32 %21 to i64
%23 = getelementptr inbounds i8, i8* %20, i64 %22
%24 = load i8, i8* %23
%25 = zext i8 %24 to i32
%26 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32 %25)
br label %27
27: ; preds = %19
%28 = load i32, i32* %5
%29 = add i32 %28, 1
store i32 %29, i32* %5
br label %6
30: ; preds = %6
%31 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.1 = [6 x i8] c"%02X \00"
define void @dump(i8* nocapture %0, i32 %1) {
%3 = icmp eq i32 %1, 0
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = zext i32 %1 to i64
br label %8
6: ; preds = %16, %2
%7 = tail call i32 @putchar(i32 10)
ret void
8: ; preds = %4, %16
%9 = phi i64 [ 0, %4 ], [ %21, %16 ]
%10 = icmp ne i64 %9, 0
%11 = and i64 %9, 15
%12 = icmp eq i64 %11, 0
%13 = and i1 %10, %12
br i1 %13, label %14, label %16
14: ; preds = %8
%15 = tail call i32 @putchar(i32 10)
br label %16
16: ; preds = %14, %8
%17 = getelementptr inbounds i8, i8* %0, i64 %9
%18 = load i8, i8* %17
%19 = zext i8 %18 to i32
%20 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32 %19)
%21 = add nuw nsw i64 %9, 1
%22 = icmp eq i64 %21, %5
br i1 %22, label %6, label %8
}