Intrinsics for CPUID like informations?

by

After some digging I have found a useful built-in functions that is gcc specific.

The only problem is that this kind of functions are really limited ( basically you have only 2 functions, 1 for the CPU “name” and 1 for the set of registers )

an example is

#include <stdio.h>

int main()
{
    if (__builtin_cpu_supports("mmx")) {
        printf("\nI got MMX !\n");
    } else
        printf("\nWhat ? MMX ? What is that ?\n");
    return (0);
}

and apparently this built-in functions work under mingw-w64 too.

More Related Contents:

  1. Is `reinterpret_cast`ing between hardware SIMD vector pointer and the corresponding type an undefined behavior?
  2. How to check if a CPU supports the SSE3 instruction set?
  3. When should I use _mm_sfence _mm_lfence and _mm_mfence
  4. How do I call “cpuid” in Linux?
  5. inlining failed in call to always_inline ‘__m256d _mm256_broadcast_sd(const double*)’
  6. SSE, intrinsics, and alignment
  7. RDRAND and RDSEED intrinsics on various compilers?
  8. How to emulate _mm256_loadu_epi32 with gcc or clang?
  9. Emulating shifts on 32 bytes with AVX
  10. C++ error: ‘_mm_sin_ps’ was not declared in this scope
  11. CPUID implementations in C++
  12. Get member of __m128 by index?
  13. Visual Studio 2017: _mm_load_ps often compiled to movups
  14. How to implement “_mm_storeu_epi64” without aliasing problems?
  15. Most efficient way to check if all __m128i components are 0 [using
  16. VS: unexpected optimization behavior with _BitScanReverse64 intrinsic
  17. Simple calculator should take 2 seconds to fix its like 10 lines
  18. “std::endl” vs “\n”
  19. Post-increment and pre-increment within a ‘for’ loop produce same output [duplicate]
  20. Unicode Processing in C++
  21. Any reason to overload global new and delete?
  22. Why is the copy constructor not called?
  23. union ‘punning’ structs w/ “common initial sequence”: Why does C (99+), but not C++, stipulate a ‘visible declaration of the union type’?
  24. C++ parameter pack, constrained to have instances of a single type?
  25. Initializing container of unique_ptrs from initializer list fails with GCC 4.7
  26. Is an iterator in C++ a pointer?
  27. iterator adapter to iterate just the values in a map?
  28. Load an PEM encoded X.509 certificate into Windows CryptoAPI
  29. c++11 std::async doesn’t work in mingw
  30. Does an R compiler to C/C++ exist?

Leave a Comment