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authorEdward Z. Yang <ezyang@fb.com>2017-06-10 00:08:37 +0300
committerSoumith Chintala <soumith@gmail.com>2017-06-13 23:20:04 +0300
commit18d390c33942f58dd13d1a3455dc3224b209cd21 (patch)
tree184b07c7628f616c6f30e66ea7972f99422b55a2 /lib
parentfa790ef1db2f72a611d6b02360094ab3e9a919c2 (diff)
Short-circuit copy if src and dest are equal.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/THC/generic/THCTensorCopy.cu1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/THC/generic/THCTensorCopy.cu b/lib/THC/generic/THCTensorCopy.cu
index 4198025..a70cc9a 100644
--- a/lib/THC/generic/THCTensorCopy.cu
+++ b/lib/THC/generic/THCTensorCopy.cu
@@ -4,6 +4,7 @@
THC_API void
THCTensor_(copy)(THCState* state, THCTensor* dst, THCTensor* src) {
+ if (dst == src) return;
THC_copyTensor<THCTensor, THCTensor>(state, dst, src);
}