[MLIR][LLVM] Fix recursive DI type export memory leak (#88122)

Followup to discussion
https://github.com/llvm/llvm-project/pull/87295#discussion_r1556016667.

The export cache should not cache temporary nodes.

GitOrigin-RevId: 9c3475acc9b11d08f0e0b3e230429e9f552d5f80
2 files changed
tree: f9d7de32c4ecc6a14b29a31ecfe6972ef15141ac
  1. benchmark/
  2. cmake/
  3. docs/
  4. examples/
  5. include/
  6. lib/
  7. python/
  8. test/
  9. tools/
  10. unittests/
  11. utils/
  12. .clang-format
  13. .clang-tidy
  14. CMakeLists.txt
  15. LICENSE.TXT
  16. README.md
README.md

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