#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 */
typedef int u_int8_t;

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
int print_buff(u_int8_t *buff, int size) {
  int tmp;
  printf("\n---------Buffer data-------\n");
  for (tmp = 0; tmp < size; tmp++) {
    printf("%02X ", buff[tmp]);
    if ((tmp % 16) == 0 && tmp != 0) {
      printf("\n");
    }
  }
  printf("\n");
  return 0;
}


x86 assembly (clang, -O0):
<print_buff>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1198 <print_buff+0x88>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xecc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
mov    $0x10,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1185 <print_buff+0x75>
cmpl   $0x0,-0x10(%rbp)
je     1185 <print_buff+0x75>
lea    0xe9e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    118a <print_buff+0x7a>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <print_buff+0x24>
lea    0xe7d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_buff>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%ebp
mov    %rdi,%r15
lea    0xec3(%rip),%rdi
call   1040 <puts@plt>
test   %ebp,%ebp
jle    1192 <print_buff+0x62>
mov    %ebp,%ebp
lea    0xeab(%rip),%r14
xor    %ebx,%ebx
jmp    1169 <print_buff+0x39>
nopl   0x0(%rax)
add    $0x1,%rbx
cmp    %rbx,%rbp
je     1192 <print_buff+0x62>
mov    (%r15,%rbx,4),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
test   %rbx,%rbx
je     1160 <print_buff+0x30>
mov    %ebx,%eax
and    $0xf,%eax
test   %rax,%rax
jne    1160 <print_buff+0x30>
mov    $0xa,%edi
call   1030 <putchar@plt>
jmp    1160 <print_buff+0x30>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

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

LLVM IR (-O2):
@.str.1 = [6 x i8] c"%02X \00"
@str = [29 x i8] c"\0A---------Buffer data-------\00"
define i32 @print_buff(i32* nocapture %0, i32 %1) {
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str, i64 0, i64 0))
%4 = icmp sgt i32 %1, 0
br i1 %4, label %5, label %21
5: ; preds = %2
%6 = zext i32 %1 to i64
br label %7
7: ; preds = %5, %18
%8 = phi i64 [ 0, %5 ], [ %19, %18 ]
%9 = getelementptr inbounds i32, i32* %0, i64 %8
%10 = load i32, i32* %9
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32 %10)
%12 = and i64 %8, 15
%13 = icmp eq i64 %12, 0
%14 = icmp ne i64 %8, 0
%15 = and i1 %14, %13
br i1 %15, label %16, label %18
16: ; preds = %7
%17 = tail call i32 @putchar(i32 10)
br label %18
18: ; preds = %7, %16
%19 = add nuw nsw i64 %8, 1
%20 = icmp eq i64 %19, %6
br i1 %20, label %21, label %7
21: ; preds = %18, %2
%22 = tail call i32 @putchar(i32 10)
ret i32 0
}