StackOverflow Questions for Tag: auto-vectorization

Malcolm MacLeod

Reputation: 670

Why is GCC not autovectorising this code unless I expicitly specify any of the possible cost model?

c++optimizationg++vectorizationauto-vectorization

Score: -2

Answers: 1

Poperton

Reputation: 2127

How to auto-vectorize (SIMD) a modular multiplication in Rust

rustsimdmicro-optimizationauto-vectorization

Score: 2

Answers: 1

myej

Reputation: 65

How to avoid if statement? for the compiler cannot optimize it to simd

cif-statementvisual-studio-2012simdauto-vectorization

Score: 0

Answers: 2

pratikpc

Reputation: 608

Why do GCC, ICX and Clang not auto-vectorize using AVX-512 based instructions on Intel processors but do the same on AMD?

c++x86vectorizationavx512auto-vectorization

Score: 3

Answers: 0

casualcoder

Reputation: 4990

What compilers besides gcc can vectorize code?

loopsgcccompiler-optimizationsimdauto-vectorization

Score: 4

Answers: 10

Unlikus

Reputation: 1858

Rust auto vectorization of exp function

assemblyrust64-bitsimdauto-vectorization

Score: 1

Answers: 0

nowox

Reputation: 29066

Why won't simple code get auto-vectorized with SSE and AVX in modern compilers?

coptimizationsseavxauto-vectorization

Score: 29

Answers: 2

Blablablabli

Reputation: 184

Loop not vectorized due to reason '1300'

c++visual-c++vectorizationauto-vectorization

Score: 5

Answers: 3

vev01

Reputation: 15

Why does msvc not vectorize?

visual-c++x86-64vectorizationavx2auto-vectorization

Score: 1

Answers: 1

quiquelhappy

Reputation: 413

C Optimization help needed for SIMD

cgccx86-64simdauto-vectorization

Score: 0

Answers: 0

YjyJeff

Reputation: 903

Why can llvm not auto-vectorize comparing two arrays and write result to vector<bool>?

c++llvmcompiler-optimizationauto-vectorization

Score: 0

Answers: 0

MarkB

Reputation: 1988

Why does GCC generate code that conditionally executes a SIMD implementation?

c++gccsimdauto-vectorization

Score: 28

Answers: 1

Sea Erchin

Reputation: 313

Why can't clang vectorise this loop over a std::span, writing results to a std::array?

c++clangvectorizationsimdauto-vectorization

Score: 4

Answers: 1

Loran

Reputation: 55

AVX512 auto-vectorized C++ matrix-vector functions are much slower when source = destination, in-place

c++assemblyx86-64avx512auto-vectorization

Score: 5

Answers: 1

matanox

Reputation: 13686

Leveraging and optimizing SIMD for matrix axis looping in cython

cythonsimdavxauto-vectorization

Score: 3

Answers: 1

mini

Reputation: 199

Disable JIT Hotspot autovectorization

javavectorizationjvm-hotspotauto-vectorization

Score: 4

Answers: 0

Niccolò Tiezzi

Reputation: 129

Vectorizing vs interleaving loop C++

c++clangcompiler-optimizationsimdauto-vectorization

Score: 3

Answers: 3

blonded04

Reputation: 503

Efficient way to reset array of structs which contain a std::atomic member?

c++stdatomicmemsetauto-vectorization

Score: 2

Answers: 1

Arkathorn

Reputation: 69

Why is the auto-vectorizer failing to find "vectorizable type information"?

c++visual-c++vectorizationcompiler-optimizationauto-vectorization

Score: 0

Answers: 1

Daisy G

Reputation: 31

With gcc -O3 optimization, why does the loop index's type affect gcc's internal GIMPLE vector constants (but not the final asm)?

gcccompiler-constructioncompiler-optimizationauto-vectorizationgimple

Score: 3

Answers: 0

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StackOverflow Questions for Tag: auto-vectorization

Why is GCC not autovectorising this code unless I expicitly specify any of the possible cost model?

How to auto-vectorize (SIMD) a modular multiplication in Rust

How to avoid if statement? for the compiler cannot optimize it to simd

Why do GCC, ICX and Clang not auto-vectorize using AVX-512 based instructions on Intel processors but do the same on AMD?

What compilers besides gcc can vectorize code?

Rust auto vectorization of exp function

Why won&#39;t simple code get auto-vectorized with SSE and AVX in modern compilers?

Loop not vectorized due to reason &#39;1300&#39;

Why does msvc not vectorize?

C Optimization help needed for SIMD

Why can llvm not auto-vectorize comparing two arrays and write result to vector&lt;bool&gt;?

Why does GCC generate code that conditionally executes a SIMD implementation?

Why can&#39;t clang vectorise this loop over a std::span, writing results to a std::array?

AVX512 auto-vectorized C++ matrix-vector functions are much slower when source = destination, in-place

Leveraging and optimizing SIMD for matrix axis looping in cython

Disable JIT Hotspot autovectorization

Vectorizing vs interleaving loop C++

Efficient way to reset array of structs which contain a std::atomic member?

Why is the auto-vectorizer failing to find &quot;vectorizable type information&quot;?

With gcc -O3 optimization, why does the loop index&#39;s type affect gcc&#39;s internal GIMPLE vector constants (but not the final asm)?

Why won't simple code get auto-vectorized with SSE and AVX in modern compilers?

Loop not vectorized due to reason '1300'

Why can llvm not auto-vectorize comparing two arrays and write result to vector<bool>?

Why can't clang vectorise this loop over a std::span, writing results to a std::array?

Why is the auto-vectorizer failing to find "vectorizable type information"?

With gcc -O3 optimization, why does the loop index's type affect gcc's internal GIMPLE vector constants (but not the final asm)?