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openwrt-packages-dist/libs/libfolly/patches/103-arm-yield.patch

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libfolly: Fix compilation for older ARM platforms ARM6 and below do not support the yield instruction. Do not use it there. Signed-off-by: Rosen Penev <rosenp@gmail.com>
5 years ago
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  1. --- a/folly/portability/Asm.h

  2. +++ b/folly/portability/Asm.h

  3. @@ -38,7 +38,7 @@ inline void asm_volatile_pause() {

  4.    ::_mm_pause();
  5.  #elif defined(__i386__) || FOLLY_X64
  6.    asm volatile("pause");
  7. -#elif FOLLY_AARCH64 || defined(__arm__)

  8. +#elif FOLLY_AARCH64 || (defined(__arm__) && !(__ARM_ARCH < 7))

  9.    asm volatile("yield");
  10.  #elif FOLLY_PPC64
  11.    asm volatile("or 27,27,27");