[llvm] [GlobalISel] Optimized MatchData Handling (PR #92115)

[Amara Emerson via llvm-commits]

aemerson wrote:

Similar thing with LTO:
```
Program                                       compile_time
                                              lhs          rhs    diff
kimwitu++/kc                                    6.30         6.33  0.4%
7zip/7zip-benchmark                            14.14        14.17  0.2%
Bullet/bullet                                  10.43        10.44  0.1%
sqlite3/sqlite3                                 2.36         2.36  0.1%
SPASS/SPASS                                     4.34         4.34  0.1%
consumer-typeset/consumer-typeset               3.41         3.40 -0.0%
mafft/pairlocalalign                            2.55         2.54 -0.0%
tramp3d-v4/tramp3d-v4                           5.37         5.36 -0.0%
lencod/lencod                                   4.41         4.41 -0.1%
                           Geomean difference                      0.1%
```

https://github.com/llvm/llvm-project/pull/92115