avx Examples and Free Source Code

Seg fault while using _mm256_i64gather_pd...

c++intrinsics avx avx2

perf report shows this function "__memset_avx2_unaligned_erms" has overhead. does this mea...

c++profiling avx perf avx2

Xcode Apple Clang enable avx512...

xcode clang avx avx2 avx512

How to get data out of AVX registers?...

c++visual-c++avx fma

Is it safe to compile one source with SSE2 another with AVX architecture?...

visual-c++sse intrinsics avx

Shuffling a vector by number of bytes...

c++x86 sse intrinsics avx

why does gcc auto-vectorization for tigerlake use ymm not zmm registers...

c gcc avx avx512 auto-vectorization

What's the fastest way to perform an arbitrary 128/256/512 bit permutation using SIMD instructio...

c++assembly sse avx avx2

SIMD Intrinsics AVX. Tried to use _mm256_mullo_epi64. But got 0xC000001D: Illegal Instruction except...

c++exception simd avx avx2

Disabling AVX2 in CPU for testing purposes...

testing x86 avx instruction-set avx2

AV512: Best way to combine horizontal sum and broadcast...

c intel avx avx512

ASM x86_64 AVX: xmm and ymm registers differences...

assembly nasm x86-64 avx

Unable to return multiple SIMD vectors using vectorcall...

c++clang x86-64 avx calling-convention

QWORD shuffle sequential 7-bits to byte-alignment with SIMD SSE...AVX...

bit-manipulation simd sse avx varint

Convert 128 bit AVX register with 8-bit elements to two 256 bit registers with 32-bit elements...

performance x86 simd avx avx2

C++ compilers give different signs of NaN for constant propagation of subtracting +-Infinity or +-Na...

c++gcc clang nan avx

Fastest way to implement _mm256_mullo_epi4 using AVX2...

c x86-64 intrinsics avx avx2

Simple AVX512 dot-product loop only 10.6x faster, expected 16x...

c++performance avx dot-product avx512

How can I exchange the low 128 bits and high 128 bits in a 256 bit AVX (YMM) register...

x86 simd avx

Which contexts need to be saved in x86-64 with a c function return?...

c x86-64 avx abi context-switch

L1 Cache Usage in Optimised matrix multiplication micro-kernel in C++...

c++optimization matrix-multiplication avx cpu-cache

What is the fastest way to calculate the logical_and (&&) between elements of two __m256i va...

c++simd avx avx2 logical-and

How to load 128bit data to ymm register in assembly?...

assembly x86 avx avx2

Mixing SSE with AVX128 for shorter instructions?...

assembly x86 sse avx micro-optimization

Is it useful to use VZEROUPPER if your program+libraries contain no SSE instructions?...

performance assembly x86 avx micro-optimization

Can I check the values of XMM or YMM registers in Visual C++ breakpoint conditions?...

visual-studio masm visual-studio-debugging avx

Fastest Implementation of Exponential Function Using AVX...

x86 simd avx exponential avx2

Horizontal minimum and maximum using SSE...

c++max sse minimum avx

How to display AVX registers as doubles with GDB?...

gdb simd sse cpu-registers avx

Can Apache web server make use of CPU AVX instructions?...

performance apache avx