experiments/STT-tensorflow
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Allow subslicing Tensors with a single dimension.

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PiperOrigin-RevId: 214553359
This commit is contained in:
A. Unique TensorFlower 2018-09-25 21:54:20 -07:00 committed by TensorFlower Gardener
parent 6666516f39
commit f2b17b22e1
3 changed files with 5 additions and 2 deletions
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2
tensorflow/core/framework/tensor.cc
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@ -813,7 +813,7 @@ Tensor Tensor::Slice(int64 start, int64 limit) const {
} }
Tensor Tensor::SubSlice(int64 index) const { Tensor Tensor::SubSlice(int64 index) const {
CHECK_GE(dims(), 2); // Crash ok. CHECK_GE(dims(), 1); // Crash ok.
CHECK_LE(0, index); // Crash ok. CHECK_LE(0, index); // Crash ok.
int64 dim0_size = shape_.dim_size(0); int64 dim0_size = shape_.dim_size(0);
CHECK_LE(index, dim0_size); // Crash ok. CHECK_LE(index, dim0_size); // Crash ok.

2
tensorflow/core/framework/tensor.h
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@ -219,7 +219,7 @@ class Tensor {
/// must check the returned tensor's alignment before calling certain /// must check the returned tensor's alignment before calling certain
/// methods that have alignment requirement (e.g., `flat()`, `tensor()`). /// methods that have alignment requirement (e.g., `flat()`, `tensor()`).
/// ///
/// REQUIRES: `dims()` >= 2 /// REQUIRES: `dims()` >= 1
/// REQUIRES: `0 <= dim0_start < dim_size(0)` /// REQUIRES: `0 <= dim0_start < dim_size(0)`
Tensor SubSlice(int64 index) const; Tensor SubSlice(int64 index) const;

3
tensorflow/core/framework/tensor_test.cc
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@ -1246,6 +1246,9 @@ TEST(Tensor, SubSlice_Basic) {
EXPECT_EQ(&tx(5, j, k), &ty(j, k)); EXPECT_EQ(&tx(5, j, k), &ty(j, k));
} }
} }
Tensor z = y.SubSlice(3).SubSlice(31);
auto tz = z.unaligned_flat<float>();
EXPECT_EQ(*tz.data(), 5.0);
} }
{ {
// Test unaligned access via a SubSlice. // Test unaligned access via a SubSlice.