[llvm] [VPlan] Cleanup and generalize VPIRMetadata CastInfo (NFC) (PR #190162)

[via llvm-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

* 172105 tests passed
* 3095 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### MLIR
<details>
<summary>MLIR.mlir-runner/sgemm-naive-codegen.mlir (Likely Already Failing)</summary>
This test is already failing at the base commit.

```
Exit Code: -9
Timeout: Reached timeout of 1200 seconds

Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/mlir-opt -pass-pipeline="builtin.module(func.func(convert-linalg-to-loops,lower-affine,convert-scf-to-cf,convert-arith-to-llvm),convert-vector-to-llvm,finalize-memref-to-llvm,convert-func-to-llvm,convert-cf-to-llvm,reconcile-unrealized-casts)" /home/gha/actions-runner/_work/llvm-project/llvm-project/mlir/test/mlir-runner/sgemm-naive-codegen.mlir | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/mlir-runner -O3 -e main -entry-point-result=void -shared-libs=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/libmlir_c_runner_utils.so | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/mlir/test/mlir-runner/sgemm-naive-codegen.mlir
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/mlir-opt '-pass-pipeline=builtin.module(func.func(convert-linalg-to-loops,lower-affine,convert-scf-to-cf,convert-arith-to-llvm),convert-vector-to-llvm,finalize-memref-to-llvm,convert-func-to-llvm,convert-cf-to-llvm,reconcile-unrealized-casts)' /home/gha/actions-runner/_work/llvm-project/llvm-project/mlir/test/mlir-runner/sgemm-naive-codegen.mlir
# note: command had no output on stdout or stderr
# error: command reached timeout: True
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/mlir-runner -O3 -e main -entry-point-result=void -shared-libs=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/libmlir_c_runner_utils.so
# note: command had no output on stdout or stderr
# error: command failed with exit status: -9
# error: command reached timeout: True
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/mlir/test/mlir-runner/sgemm-naive-codegen.mlir
# note: command had no output on stdout or stderr
# error: command failed with exit status: -9
# error: command reached timeout: True

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/190162