[llvm] [SDAG] Add basic type legalization for experimental.vector.match (PR #213344)

[via llvm-commits]

github-actions[bot] wrote:

test-suite diff from 7a0afd38069f6660bbd6ff73904c8578fe8dfae1...4bd457793ff15b53418b4374ffebe3d2bc6026e4: https://github.com/llvm/llvm-project/actions/runs/30895372571/artifacts/8890031354

Statistics: https://github.com/llvm/llvm-project/actions/runs/30895372571/artifacts/8890031812

## riscv64-linux-gnu `-march=rva23u64 -O3`
| ('Program', '')    |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:-------------------|-------------------------:|-------------------------:|-------------------------:|
| Geomean difference |                      nan |                      nan |                        0 |
## aarch64-linux-gnu `-march=armv9-a -O3`
| ('Program', '')    |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:-------------------|-------------------------:|-------------------------:|-------------------------:|
| Geomean difference |                      nan |                      nan |                        0 |
## x86_64-linux-gnu `-march=x86-64-v3 -O3`
| ('Program', '')    |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:-------------------|-------------------------:|-------------------------:|-------------------------:|
| Geomean difference |                      nan |                      nan |                        0 |


https://github.com/llvm/llvm-project/pull/213344