Antoine Pitrou created ARROW-7785:
-------------------------------------
Summary: [C++] sparse_tensor.cc is extremely slow to compile
Key: ARROW-7785
URL: https://issues.apache.org/jira/browse/ARROW-7785
Project: Apache Arrow
Issue Type: Bug
Components: C++
Reporter: Antoine Pitrou
This comes up especially when doing an optimized build. {{sparse_tensor.cc}} is
always enabled even if all components are disabled, and it takes multiple
seconds to compile.
Using [CLangBuildAnalyzer|https://github.com/aras-p/ClangBuildAnalyzer] I get
the following results:
{code}
**** Files that took longest to codegen (compiler backend):
66372 ms:
build-clang-profile/src/arrow/CMakeFiles/arrow_objlib.dir/sparse_tensor.cc.o
16457 ms:
build-clang-profile/src/arrow/CMakeFiles/arrow_objlib.dir/array/diff.cc.o
6283 ms: build-clang-profile/src/arrow/CMakeFiles/arrow_objlib.dir/scalar.cc.o
5284 ms:
build-clang-profile/src/arrow/CMakeFiles/arrow_objlib.dir/builder.cc.o
5090 ms:
build-clang-profile/src/arrow/CMakeFiles/arrow_objlib.dir/array/dict_internal.cc.o
{code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
