8000 ENH: perform inplace operations if one operand is a temporary by juliantaylor · Pull Request #4322 · numpy/numpy · GitHub
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ENH: perform inplace operations if one operand is a temporary #4322

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ENH: perform inplace operations if one operand is a temporary #4322

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b26ce38
ENH: perform inplace operations if one operand is a temporary
juliantaylor Feb 18, 2014
6c4c696
add bitwise operations
juliantaylor Feb 18, 2014
61ae312
add comments and disable true_divide as it can change type
juliantaylor Feb 18, 2014
be38f58
add m2.ref_cnt == 1 eliding for associative operations
juliantaylor Feb 18, 2014
4450dd2
only elide if the inplace operand is on the python stack
juliantaylor Jul 2, 2014
18b9ed5
wip, check last instruction
juliantaylor Aug 6, 2014
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add m2.ref_cnt == 1 eliding for associative operations 
implementation not good, just improve checking for issues in testsuite
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@juliantaylor
juliantaylor committed Aug 6, 2014
commit be38f5833b39092ef7aadacf7ffb546bdf7011cb
15 changes: 15 additions & 0 deletions numpy/core/src/multiarray/number.c
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Original file line number Diff line number Diff line change
Expand Up @@ -384,6 +384,9 @@ array_add(PyArrayObject *m1, PyObject *m2)
if (can_elide_temp(m1, m2)) {
return array_inplace_add(m1, m2);
}
else if (can_elide_temp(m2, m1)) {
return array_inplace_add(m2, m1);
}
else {
return PyArray_GenericBinaryFunction(m1, m2, n_ops.add);
}
Expand All @@ -408,6 +411,9 @@ array_multiply(PyArrayObject *m1, PyObject *m2)
if (can_elide_temp(m1, m2)) {
return array_inplace_multiply(m1, m2);
}
else if (can_elide_temp(m2, m1)) {
return array_inplace_multiply(m2, m1);
}
return PyArray_GenericBinaryFunction(m1, m2, n_ops.multiply);
}

Expand Down Expand Up @@ -639,6 +645,9 @@ array_bitwise_and(PyArrayObject *m1, PyObject *m2)
if (can_elide_temp(m1, m2)) {
return array_inplace_bitwise_and(m1, m2);
}
else if (can_elide_temp(m2, m1)) {
return array_inplace_bitwise_and(m2, m1);
}
return PyArray_GenericBinaryFunction(m1, m2, n_ops.bitwise_and);
}

Expand All @@ -649,6 +658,9 @@ array_bitwise_or(PyArrayObject *m1, PyObject *m2)
if 71F7 (can_elide_temp(m1, m2)) {
return array_inplace_bitwise_or(m1, m2);
}
else if (can_elide_temp(m2, m1)) {
return array_inplace_bitwise_or(m2, m1);
}
return PyArray_GenericBinaryFunction(m1, m2, n_ops.bitwise_or);
}

Expand All @@ -659,6 +671,9 @@ array_bitwise_xor(PyArrayObject *m1, PyObject *m2)
if (can_elide_temp(m1, m2)) {
return array_inplace_bitwise_xor(m1, m2);
}
else if (can_elide_temp(m2, m1)) {
return array_inplace_bitwise_xor(m2, m1);
}
return PyArray_GenericBinaryFunction(m1, m2, n_ops.bitwise_xor);
}

Expand Down
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