#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 /*<<< orphan*/ buf;

/* Variables and functions */
int /*<<< orphan*/ snprintf(char *, int, char *, unsigned char);
char *pt(unsigned char *md, unsigned int len) {
  unsigned int i;
  static char buf[80];
  for (i = 0; i < len; i++)
    snprintf(buf + i * 2, sizeof(buf) - i * 2, "%02x", md[i]);
  return (buf);
}


x86 assembly (clang, -O0):
<pt>:
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    117d <pt+0x6d>
mov    -0x10(%rbp),%eax
shl    $0x1,%eax
mov    %eax,%eax
lea    0x2eff(%rip),%rdi
add    %rax,%rdi
mov    -0x10(%rbp),%eax
shl    $0x1,%eax
mov    %eax,%eax
mov    %eax,%ecx
mov    $0x50,%eax
sub    %rcx,%rax
mov    %eax,%esi
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%ecx
lea    0xe9a(%rip),%rdx
movzbl (%rax,%rcx,1),%ecx
call   1030 <snprintf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1126 <pt+0x16>
lea    0x2ebc(%rip),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<pt>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
test   %esi,%esi
je     1164 <pt+0x54>
mov    %rdi,%r12
mov    %esi,%r15d
add    %r15,%r15
mov    $0x50,%ebp
xor    %ebx,%ebx
lea    0x2f0a(%rip),%r13
lea    0xec3(%rip),%r14
nopl   (%rax)
mov    %ebx,%edi
add    %r13,%rdi
movzbl (%r12),%ecx
mov    %ebp,%esi
mov    %r14,%rdx
call   1030 <snprintf@plt>
add    $0x1,%r12
add    $0xfffffffe,%ebp
add    $0x2,%rbx
cmp    %rbx,%r15
jne    1140 <pt+0x30>
lea    0x2ed5(%rip),%rax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@pt.buf = internal global [80 x i8] zeroinitializer
@.str = [5 x i8] c"%02x\00"
define i8* @pt(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 = %26, %2
%7 = load i32, i32* %5
%8 = load i32, i32* %4
%9 = icmp ult i32 %7, %8
br i1 %9, label %10, label %29
10: ; preds = %6
%11 = load i32, i32* %5
%12 = mul i32 %11, 2
%13 = zext i32 %12 to i64
%14 = getelementptr inbounds i8, i8* getelementptr inbounds ([80 x i8], [80 x i8]* @pt.buf, i64 0, i64 0), i64 %13
%15 = load i32, i32* %5
%16 = mul i32 %15, 2
%17 = zext i32 %16 to i64
%18 = sub i64 80, %17
%19 = trunc i64 %18 to i32
%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 = call i32 @snprintf(i8* %14, i32 %19, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8 zeroext %24)
br label %26
26: ; preds = %10
%27 = load i32, i32* %5
%28 = add i32 %27, 1
store i32 %28, i32* %5
br label %6
29: ; preds = %6
ret i8* getelementptr inbounds ([80 x i8], [80 x i8]* @pt.buf, i64 0, i64 0)
}

LLVM IR (-O2):
@pt.buf = internal global [80 x i8] zeroinitializer
@.str = [5 x i8] c"%02x\00"
define i8* @pt(i8* nocapture %0, i32 %1) {
%3 = icmp eq i32 %1, 0
br i1 %3, label %18, label %4
4: ; preds = %2
%5 = zext i32 %1 to i64
br label %6
6: ; preds = %4, %6
%7 = phi i64 [ 0, %4 ], [ %16, %6 ]
%8 = trunc i64 %7 to i32
%9 = shl i32 %8, 1
%10 = zext i32 %9 to i64
%11 = getelementptr inbounds [80 x i8], [80 x i8]* @pt.buf, i64 0, i64 %10
%12 = sub i32 80, %9
%13 = getelementptr inbounds i8, i8* %0, i64 %7
%14 = load i8, i8* %13
%15 = tail call i32 @snprintf(i8* %11, i32 %12, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8 zeroext %14)
%16 = add nuw nsw i64 %7, 1
%17 = icmp eq i64 %16, %5
br i1 %17, label %18, label %6
18: ; preds = %6, %2
ret i8* getelementptr inbounds ([80 x i8], [80 x i8]* @pt.buf, i64 0, i64 0)
}