[llvm] [Analysis][RISCV] More accurately estimate the cost of strided vector loads (PR #175135)

[via llvm-commits]

github-actions[bot] wrote:

test-suite diff from 585df631037b5cf8d822b9d6de5abb74cf79d1f4...5fe3be104b9eb0610de03d4ec537b822526db5b1: https://github.com/llvm/llvm-project/actions/runs/36125265668/artifacts/10862697062

Statistics: https://github.com/llvm/llvm-project/actions/runs/36125265668/artifacts/10862737029

## 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/175135