[llvm] [RISCV] Enable shouldMaximizeVectorBandwidth (PR #216005)

[via llvm-commits]

github-actions[bot] wrote:

test-suite diff from 21f78d9c5dd6c92464093facae4c24a52a0fd846...8d940b1262039644c90ac4f2e8add9df339de39a: https://github.com/llvm/llvm-project/actions/runs/31692672710/artifacts/9180175581

Statistics: https://github.com/llvm/llvm-project/actions/runs/31692672710/artifacts/9180176492

## riscv64-linux-gnu `-march=rva23u64 -O3`
| ('Program', '')                             |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:--------------------------------------------|-------------------------:|-------------------------:|-------------------------:|
| ultiSource...ch/consumer-lame/consumer-lame |                   123124 |                   129660 |              0.0530847   |
| ultiSource...OE-ProxyApps-C/XSBench/XSBench |                     7960 |                     8286 |              0.0409548   |
| ultiSource...chmarks/Prolangs-C/agrep/agrep |                    36056 |                    36616 |              0.0155314   |
| ultiSource...hmarks/ASC_Sequoia/AMGmk/AMGmk |                    10418 |                    10536 |              0.0113266   |
| ultiSource...nch/mpeg2/mpeg2dec/mpeg2decode |                    35942 |                    36298 |              0.00990485  |
| ultiSource...Benchmarks/SciMark2-C/scimark2 |                     9116 |                     9166 |              0.00548486  |
| ultiSource...arks/DOE-ProxyApps-C/CoMD/CoMD |                    27160 |                    27306 |              0.00537555  |
| ultiSource/Applications/lua/lua             |                   101528 |                   102012 |              0.00476716  |
| ultiSource...ing-dbl/IndirectAddressing-dbl |                    31030 |                    31174 |              0.00464067  |
| ultiSource...enchmarks/mafft/pairlocalalign |                   262220 |                   262956 |              0.0028068   |
| ultiSource/Benchmarks/nbench/nbench         |                    30274 |                    30356 |              0.00270859  |
| icroBenchm...on/LoopVectorizationBenchmarks |                   298652 |                   299288 |              0.00212957  |
| icroBenchm...oopInterchange/LoopInterchange |                   166534 |                   166858 |              0.00194555  |
| icroBenchm...Diffusion/AnisotropicDiffusion |                   169218 |                   169542 |              0.00191469  |
| icroBenchm...teralFiltering/BilateralFilter |                   169260 |                   169584 |              0.00191421  |
| Geomean difference                          |                      nan |                      nan |              0.000195605 |
## 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/216005