[X86][Costmodel] Load/store i32/f32 Stride=2 VF=32 interleaving costs
The only sched models that for cpu's that support avx2 but not avx512 are: haswell, broadwell, skylake, zen1-3 Here for `store` pattern we are starting to have spilling, so accurate modelling may be problematic, although if i drop the spilling, the measurements don't change. For load we have: https://godbolt.org/z/1oTTnncbx - for intels `Block RThroughput: =16.0`; for ryzens, `Block RThroughput: <=8.0` So pick cost of `16`. For store we have: https://godbolt.org/z/1oTTnncbx - for intels `Block RThroughput: =16.0`; for ryzens, `Block RThroughput: =8.0` So pick cost of `16`. I'm directly using the shuffling asm the llc produced, without any manual fixups that may be needed to ensure sequential execution. Reviewed By: RKSimon Differential Revision: https://reviews.llvm.org/D110761
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