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Hash : e4ec23d7
Author :
Date : 2021-02-10T16:45:50
Neon: Use byte-swap builtins instead of inline asm Define compiler-independent byte-swap macros and use them instead of executing 'rev' via inline assembly code with GCC-compatible compilers or a slow shift-store sequence with Visual C++. * This produces identical assembly code with: - 64-bit GCC 8.4.0 (Linux) - 64-bit GCC 9.3.0 (Linux) - 64-bit Clang 10.0.0 (Linux) - 64-bit Clang 10.0.0 (MinGW) - 64-bit Clang 12.0.0 (Xcode 12.2, macOS) - 64-bit Clang 12.0.0 (Xcode 12.2, iOS) * This produces different assembly code with: - 64-bit GCC 4.9.1 (Linux) - 32-bit GCC 4.8.2 (Linux) - 32-bit GCC 8.4.0 (Linux) - 32-bit GCC 9.3.0 (Linux) Since the intrinsics implementation of Huffman encoding is not used by default with these compilers, this is not a concern. - 32-bit Clang 10.0.0 (Linux) Verified performance neutrality Closes #507
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Files
- aarch32/
- aarch64/
- align.h
- jccolor-neon.c
- jcgray-neon.c
- jcgryext-neon.c
- jchuff.h
- jcphuff-neon.c
- jcsample-neon.c
- jdcolext-neon.c
- jdcolor-neon.c
- jdmerge-neon.c
- jdmrgext-neon.c
- jdsample-neon.c
- jfdctfst-neon.c
- jfdctint-neon.c
- jidctfst-neon.c
- jidctint-neon.c
- jidctred-neon.c
- jquanti-neon.c
- neon-compat.h.in
