fork download
copy 
  1. #include <iostream>
  2.  
  3. int main() {
  4.     int arr[] = {43, -25, 14, 16, -25, 78, 69, 96, -18, 23};
  5.     const int size = sizeof(arr) / sizeof(arr[0]);
  6.     int even_count = 0;
  7.  
  8.     __asm__ (
  9.         "movq $0, %%rcx \n\t"
  10.         "movl $0, %%eax \n\t"
  11.         "loop_start: \n\t"
  12.         "cmpq %[size], %%rcx \n\t"
  13.         "jge loop_end \n\t"
  14.         "movl (%[arr], %%rcx, 4), %%ebx \n\t"
  15.         "andl $1, %%ebx \n\t"
  16.         "jz even_number \n\t"
  17.         "jmp next_iteration \n\t"
  18.         "even_number: \n\t"
  19.         "incl %%eax \n\t"
  20.         "next_iteration: \n\t"
  21.         "incq %%rcx \n\t"
  22.         "jmp loop_start \n\t"
  23.         "loop_end: \n\t"
  24.         "movl %%eax, %[count] \n\t"
  25.         : [count] "=r" (even_count)
  26.         : [arr] "r" (arr), [size] "r" ((long)size)
  27.         : "rax", "rbx", "rcx"
  28.     );
  29.  
  30.     std::cout << "Number of even elements: " << even_count << std::endl;
  31.  
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0.01s 5240KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Number of even elements: 5
https://ideone.com/nCkkXn
language:
C++ (gcc 8.3)
created:
13 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!