kc3-lang/libjpeg-turbo/simd

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• Hash : 57ba02a4
  Author :
  Date : 2021-10-01T16:28:54
  

  Build: Improve Neon capability detection
  
  - Use check_c_source_compiles() rather than check_symbol_exists() to
    detect the presence of vld1_s16_x3(), vld1_u16_x2(), and
    vld1q_u8_x4().  check_symbol_exists() is unreliable for detecting
    intrinsics, and in practice, it did not detect the presence of the
    aforementioned intrinsics in versions of GCC that support them.
  
  - Set DEFAULT_NEON_INTRINSICS=0 for GCC < 12, even if the aforementioned
    intrinsics are available.  The AArch64 back end in GCC 10 and 11
    supports the necessary intrinsics, but the GAS implementation is still
    faster when using those compilers.
  
  Fixes #547
  

• Files

• CMakeLists.txt
• arm/
• i386/
• jsimd.h
• mips/
• mips64/
• nasm/
• powerpc/
• x86_64/

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  Git SSH	git@git.kmx.io:kc3-lang/libjpeg-turbo.git
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