clzerointrin.h 2.0 KB

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  1. /*===----------------------- clzerointrin.h - CLZERO ----------------------===
  2. *
  3. * Permission is hereby granted, free of charge, to any person obtaining a copy
  4. * of this software and associated documentation files (the "Software"), to deal
  5. * in the Software without restriction, including without limitation the rights
  6. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  7. * copies of the Software, and to permit persons to whom the Software is
  8. * furnished to do so, subject to the following conditions:
  9. *
  10. * The above copyright notice and this permission notice shall be included in
  11. * all copies or substantial portions of the Software.
  12. *
  13. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19. * THE SOFTWARE.
  20. *
  21. *===-----------------------------------------------------------------------===
  22. */
  23. #ifndef __X86INTRIN_H
  24. #error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead."
  25. #endif
  26. #ifndef _CLZEROINTRIN_H
  27. #define _CLZEROINTRIN_H
  28. /* Define the default attributes for the functions in this file. */
  29. #define __DEFAULT_FN_ATTRS \
  30. __attribute__((__always_inline__, __nodebug__, __target__("clzero")))
  31. /// \brief Loads the cache line address and zero's out the cacheline
  32. ///
  33. /// \headerfile <clzerointrin.h>
  34. ///
  35. /// This intrinsic corresponds to the <c> CLZERO </c> instruction.
  36. ///
  37. /// \param __line
  38. /// A pointer to a cacheline which needs to be zeroed out.
  39. static __inline__ void __DEFAULT_FN_ATTRS
  40. _mm_clzero (void * __line)
  41. {
  42. __builtin_ia32_clzero ((void *)__line);
  43. }
  44. #undef __DEFAULT_FN_ATTRS
  45. #endif /* _CLZEROINTRIN_H */