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!3739 not eliminate memcpy when nexe node is graph output 

Merge pull request !3739 from laiyongqiang/eliminate_memcpy_bug
This commit is contained in:
mindspore-ci-bot 2020-07-31 17:35:11 +08:00 committed by Gitee
parent fd1f0d3cb6 2458431750
commit 953f91cef8
2 changed files with 10 additions and 1 deletions
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9
mindspore/ccsrc/backend/optimizer/ascend/enhancer/getnext_memcpy_elimination.cc
View File

@ -56,12 +56,19 @@ const AnfNodePtr GetnextMemcpyElimination::Process(const FuncGraphPtr &graph, co
return nullptr;
}
// 3. next_node is not nop node and it has only one input which is memcpy's output
// 3. next_node is not nop node, not graph output and it has only one input which is memcpy's output
for (auto &item : next_nodes) {
auto next_node = item.first->cast<CNodePtr>();
if (opt::IsNopNode(next_node)) {
return nullptr;
}
auto graph_outputs = AnfAlgo::GetAllOutput(graph->output(), {prim::kPrimTupleGetItem});
auto iter = std::find(graph_outputs.begin(), graph_outputs.end(), next_node);
if (iter != graph_outputs.end()) {
return nullptr;
}
if (next_node->inputs().size() != 2) {
MS_LOG(DEBUG) << "next node has more than one input";
return nullptr;

2
tests/ut/cpp/python_input/gtest_input/pre_activate/getnext_memcpy_elimination_test.py
View File

@ -44,12 +44,14 @@ def test_getnext_memcpy_elimination(tag):
res = get_next()
res = memcpy_async_attr(res)
res = cast(res)
res = add(res)
return res
@fns
def after():
res = get_next()
res = cast(res)
res = add(res)
return res
return fns[tag]