armV8 gcc compiler auto-vectorization faster than Neon Intrinsics

ermig1979 / Simd

C++ image processing and machine learning library with using of SIMD: SSE, AVX, AVX-512, AMX for x86/x64, VMX(Altivec) and VSX(Power7) for PowerPC, NEON for ARM.

http://ermig1979.github.io/Simd

MIT License

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armV8 gcc compiler auto-vectorization faster than Neon Intrinsics #259

Open Superman0307 opened 10 months ago

Superman0307 commented 10 months ago

I am confused，why gcc auto-vectorization is faster than neon instrinsics. I test open source code like NCNN .