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This change will allow the AVX version of non-temporal memcpy to be compiled
even if the compiler isn't run with AVX support. This allows runtime dispatch
to select the AVX implementation for CPUs that are known to be compatible with
AVX instructions.
PiperOrigin-RevId: 619594422
Change-Id: Ia7d92404ef8d10d152030b29b71948ed954f28f5
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PiperOrigin-RevId: 493386604
Change-Id: I289cb38b4a3da5760ab7ef3976d402d165d7e10f
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coverage of the accelerated CRC implementation and some differences
bewteen the internal and external implementation.
This change adds CI coverage to the
linux_clang-latest_libstdcxx_bazel.sh script assuming this script
always runs on machines of at least the Intel Haswell generation.
Fixes include:
* Remove the use of the deprecated xor operator on crc32c_t
* Remove #pragma unroll_completely, which isn't known by GCC or Clang:
https://godbolt.org/z/97j4vbacs
* Fixes for -Wsign-compare, -Wsign-conversion and -Wshorten-64-to-32
PiperOrigin-RevId: 491965029
Change-Id: Ic5e1f3a20f69fcd35fe81ebef63443ad26bf7931
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Using /arch:AVX on MSVC now uses the accelerated implementation
PiperOrigin-RevId: 490550573
Change-Id: I924259845f38ee41d15f23f95ad085ad664642b5
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This implementation can advantage of hardware acceleration available
on common CPUs when using GCC and Clang. A future update may enable
this on MSVC as well.
PiperOrigin-RevId: 487327024
Change-Id: I99a8f1bcbdf25297e776537e23bd0a902e0818a1
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