[PyTorch] Devirtualize TensorImpl::sizes() with macro

[swolchok]

Stack from ghstack:

• [PyTorch] Devirtualize TensorImpl::sizes() with macro #50176 [PyTorch] Devirtualize TensorImpl::sizes() with macro

UndefinedTensorImpl was the only type that overrode this, and IIUC we don't need to do it.

Differential Revision: D25817370

NOTE FOR REVIEWERS: This PR has internal Facebook specific changes or comments, please review them on Phabricator!

[facebook-github-bot]

💊 CI failures summary and remediations

As of commit c7ad841 (more details on the Dr. CI page):

---

• 2/2 failures possibly* introduced in this PR
  • 1/2 non-CircleCI failure(s)

---

🕵️ 1 new failure recognized by patterns

The following CI failures do not appear to be due to upstream breakages:

pytorch_bazel_build (1/1)

Step: "Bazel Build" (full log | diagnosis details | 🔁 rerun)

Jan 08 21:00:12 FAILED: Build did NOT complete successfully (38 packages loaded, 5435 targets configured)

Jan 08 21:00:12 Repository rule http_archive defined at:
Jan 08 21:00:12   /var/lib/jenkins/.cache/bazel/_bazel_jenkins/fdf6d09bf4b4f04a71e2a7dfceb40620/external/bazel_tools/tools/build_defs/repo/http.bzl:336:16: in <toplevel>
Jan 08 21:00:12 WARNING: Download from https://anaconda.org/anaconda/mkl/2020.0/download/linux-64/mkl-2020.0-166.tar.bz2 failed: class java.io.IOException Read timed out
Jan 08 21:00:12 ERROR: An error occurred during the fetch of repository 'mkl':
Jan 08 21:00:12    java.io.IOException: Error downloading [https://anaconda.org/anaconda/mkl/2020.0/download/linux-64/mkl-2020.0-166.tar.bz2] to /var/lib/jenkins/.cache/bazel/_bazel_jenkins/fdf6d09bf4b4f04a71e2a7dfceb40620/external/mkl/mkl-2020.0-166.tar.bz2: Read timed out
Jan 08 21:00:12 ERROR: /var/lib/jenkins/.cache/bazel/_bazel_jenkins/fdf6d09bf4b4f04a71e2a7dfceb40620/external/mkl_dnn/BUILD.bazel:28:1: @mkl_dnn//:mkl-dnn depends on @mkl//:mkl in repository @mkl which failed to fetch. no such package '@mkl//': java.io.IOException: Error downloading [https://anaconda.org/anaconda/mkl/2020.0/download/linux-64/mkl-2020.0-166.tar.bz2] to /var/lib/jenkins/.cache/bazel/_bazel_jenkins/fdf6d09bf4b4f04a71e2a7dfceb40620/external/mkl/mkl-2020.0-166.tar.bz2: Read timed out
Jan 08 21:00:12 ERROR: Analysis of target '//:torch' failed; build aborted: no such package '@mkl//': java.io.IOException: Error downloading [https://anaconda.org/anaconda/mkl/2020.0/download/linux-64/mkl-2020.0-166.tar.bz2] to /var/lib/jenkins/.cache/bazel/_bazel_jenkins/fdf6d09bf4b4f04a71e2a7dfceb40620/external/mkl/mkl-2020.0-166.tar.bz2: Read timed out
Jan 08 21:00:12 INFO: Elapsed time: 155.901s
Jan 08 21:00:12 INFO: 0 processes.
Jan 08 21:00:12 FAILED: Build did NOT complete successfully (38 packages loaded, 5435 targets configured)
Jan 08 21:00:12 FAILED: Build did NOT complete successfully (38 packages loaded, 5435 targets configured)
Jan 08 21:00:12 + cleanup
Jan 08 21:00:12 + retcode=1
Jan 08 21:00:12 + set +x
Jan 08 21:00:12 =================== sccache compilation log ===================
Jan 08 21:00:12 ERROR 2021-01-08T20:57:45Z: sccache::server: ["null"] fatal error: Permission denied (os error 13) at path "/dev/.tmpQnT2rn"
Jan 08 21:00:12 
Jan 08 21:00:12 ERROR 2021-01-08T20:57:45Z: sccache::server: ["null"] 	Permission denied (os error 13) at path "/dev/.tmpQnT2rn"
Jan 08 21:00:12 
Jan 08 21:00:12 ERROR 2021-01-08T20:57:45Z: sccache::server: ["null"] fatal error: Permission denied (os error 13) at path "/dev/.tmpeKauVC"
Jan 08 21:00:12 

---

This comment was automatically generated by Dr. CI (expand for details).

Follow this link to opt-out of these comments for your Pull Requests.

Please report bugs/suggestions to the (internal) Dr. CI Users group.

This comment has been revised 10 times.

[ezyang]

Guessing that sizes_ is still initialized in undefined tensor (so we don't return garbage)

[facebook-github-bot]

This pull request has been merged in b5d3826.