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Optimize strided loop assignment for runtime-contiguous layout types with contiguous assignment by Ivorforce · Pull Request #2810 · xtensor-stack/xtensor · GitHub

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Optimize strided loop assignment for runtime-contiguous layout types with contiguous assignment #2810

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Optimize strided loop assignment for runtime-contiguous layout types with contiguous assignment #2810

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8 changes: 5 additions & 3 deletions include/xtensor/core/xassign.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1135,6 +1135,8 @@ namespace xt
std::size_t simd_size = inner_loop_size / simd_type::size;
std::size_t simd_rest = inner_loop_size % simd_type::size;

bool e1_is_contiguous = E1::contiguous_layout || e1.is_contiguous();

auto fct_stepper = e2.stepper_begin(e1.shape());
auto res_stepper = e1.stepper_begin(e1.shape());

Expand Down Expand Up @@ -1185,7 +1187,7 @@ namespace xt
fct_stepper.to_begin();

// need to step E1 as well if not contigous assign (e.g. view)
if (!E1::contiguous_layout)
if (!E1::contiguous_layout && !e1_is_contiguous)
{
res_stepper.to_begin();
for (std::size_t i = 0; i < idx.size(); ++i)
Expand Down Expand Up @@ -1260,7 +1262,7 @@ namespace xt
fct_stepper.to_begin();

// need to step E1 as well if not contigous assign (e.g. view)
if (!E1::contiguous_layout)
if (!E1::contiguous_layout && !e1_is_contiguous)
{
res_stepper.to_begin();
for (std::size_t i = 0; i < idx.size(); ++i)
Expand Down Expand Up @@ -1305,7 +1307,7 @@ namespace xt
fct_stepper.to_begin();

// need to step E1 as well if not contigous assign (e.g. view)
if (!E1::contiguous_layout)
if (!E1::contiguous_layout && !e1_is_contiguous)
{
res_stepper.to_begin();
for (std::size_t i = 0; i < idx.size(); ++i)
Expand Down
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