#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 uint8_t;
typedef scalar_t__ uint32_t;

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
void printx(uint8_t *inst, uint32_t len) {
  uint32_t i = 0;
  if (inst != NULL && len > 0) {
    printf("0x");
    for (i = 0; i < len; i++) {
      printf("%02X", inst[i]);
    }
  }
  return;
}


x86 assembly (clang, -O0):
<printx>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movq   $0x0,-0x18(%rbp)
cmpq   $0x0,-0x8(%rbp)
je     1191 <printx+0x81>
cmpq   $0x0,-0x10(%rbp)
jle    1191 <printx+0x81>
lea    0xebb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movq   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%rax
cmp    -0x10(%rbp),%rax
jge    118c <printx+0x7c>
mov    -0x8(%rbp),%rax
mov    -0x18(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe8f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x18(%rbp)
jmp    1154 <printx+0x44>
jmp    1191 <printx+0x81>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printx>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
test   %rdi,%rdi
je     1157 <printx+0x47>
mov    %rsi,%r14
test   %rsi,%rsi
jle    1157 <printx+0x47>
mov    %rdi,%r12
lea    0xed1(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xec6(%rip),%r15
xor    %ebx,%ebx
nop
mov    (%r12,%rbx,4),%esi
mov    %r15,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r14
jne    1140 <printx+0x30>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

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

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