#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*/ puth2(unsigned char const);
int /*<<< orphan*/ puts(char *);
void hexdump(const void *a, int l) {
  int i;
  for (i = 0; i < l; i++) {
    if (i != 0 && (i & 0xf) == 0)
      puts("\n");
    puth2(((const unsigned char *)a)[i]);
    puts(" ");
  }
  puts("\n");
}


x86 assembly (clang, -O0):
<hexdump>:
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
jge    1192 <hexdump+0x72>
cmpl   $0x0,-0x10(%rbp)
je     1167 <hexdump+0x47>
mov    -0x10(%rbp),%eax
and    $0xf,%eax
cmp    $0x0,%eax
jne    1167 <hexdump+0x47>
lea    0xe9e(%rip),%rdi
call   1030 <puts@plt>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movzbl (%rax,%rcx,1),%edi
call   1040 <puth2@plt>
lea    0xe83(%rip),%rdi
call   1030 <puts@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1136 <hexdump+0x16>
lea    0xe67(%rip),%rdi
call   1030 <puts@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<hexdump>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
test   %esi,%esi
jle    1184 <hexdump+0x64>
mov    %rdi,%r12
mov    %esi,%r13d
xor    %ebx,%ebx
lea    0xec4(%rip),%r14
lea    0xebf(%rip),%r15
jmp    116b <hexdump+0x4b>
cs nopw 0x0(%rax,%rax,1)
nop
movzbl (%r12,%rbx,1),%edi
call   1040 <puth2@plt>
mov    %r15,%rdi
call   1030 <puts@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
je     1184 <hexdump+0x64>
test   %rbx,%rbx
je     1150 <hexdump+0x30>
mov    %ebx,%eax
and    $0xf,%eax
test   %rax,%rax
jne    1150 <hexdump+0x30>
mov    %r14,%rdi
call   1030 <puts@plt>
jmp    1150 <hexdump+0x30>
lea    0xe75(%rip),%rdi
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [2 x i8] c" \00"
define void @hexdump(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 slt 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 = and i32 %14, 15
%16 = icmp eq i32 %15, 0
br i1 %16, label %17, label %19
17: ; preds = %13
%18 = call i32 @puts(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 = sext i32 %21 to i64
%23 = getelementptr inbounds i8, i8* %20, i64 %22
%24 = load i8, i8* %23
%25 = call i32 @puth2(i8 zeroext %24)
%26 = call i32 @puts(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %27
27: ; preds = %19
%28 = load i32, i32* %5
%29 = add nsw i32 %28, 1
store i32 %29, i32* %5
br label %6
30: ; preds = %6
%31 = call i32 @puts(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [2 x i8] c" \00"
define void @hexdump(i8* nocapture %0, i32 %1) {
%3 = icmp sgt i32 %1, 0
br i1 %3, label %4, label %21
4: ; preds = %2
%5 = zext i32 %1 to i64
br label %6
6: ; preds = %4, %14
%7 = phi i64 [ 0, %4 ], [ %19, %14 ]
%8 = icmp ne i64 %7, 0
%9 = and i64 %7, 15
%10 = icmp eq i64 %9, 0
%11 = and i1 %8, %10
br i1 %11, label %12, label %14
12: ; preds = %6
%13 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
br label %14
14: ; preds = %12, %6
%15 = getelementptr inbounds i8, i8* %0, i64 %7
%16 = load i8, i8* %15
%17 = tail call i32 @puth2(i8 zeroext %16)
%18 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%19 = add nuw nsw i64 %7, 1
%20 = icmp eq i64 %19, %5
br i1 %20, label %21, label %6
21: ; preds = %14, %2
%22 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
ret void
}