[llvm] [RISCV] Disable fixed vectors in getOptimalMemOpType if minimum VLEN is 32. (PR #102974)

[Craig Topper via llvm-commits]

topperc wrote:

> > > At the moment, trying to use zve32x/zve32f is living very dangerously.
> 
> > 
> 
> > zve32x/zve32f are supposed to work as long as zvl64b or higher is also used.
> 
> 
> 
> Yes, I tested with my case, when I pass `_zve32f` it will not generate any vector instruction, and I want to ask how can I disable the auto vectorization for RVV since most of my cases are written by using rvv intrinsic API.

-fno-vectorize
-fno-slp-vectorize

https://github.com/llvm/llvm-project/pull/102974