[llvm] [LV] Consider EVL legality for TTI tail folding preference (PR #144790)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-aarch64-windows` running on `linaro-armv8-windows-msvc-05` while building `llvm` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/141/builds/9572

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test) failure: build (failure)
...
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/11/12 (2237 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/2/12 (2238 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/3/12 (2239 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/4/12 (2240 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/5/12 (2241 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/6/12 (2242 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/7/12 (2243 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/8/12 (2244 of 2247)
PASS: lldb-unit :: ValueObject/./LLDBValueObjectTests.exe/9/12 (2245 of 2247)
PASS: lldb-unit :: tools/lldb-server/tests/./LLDBServerTests.exe/0/1 (2246 of 2247)
command timed out: 2400 seconds without output running [b'ninja', b'check-lldb'], attempting to kill
program finished with exit code 1
elapsedTime=5129.039465

```

</details>

https://github.com/llvm/llvm-project/pull/144790