[llvm] [SelectionDAG][RISCV] Avoid store merging across function calls (PR #130430)

[Mikhail R. Gadelha via llvm-commits]

mikhailramalho wrote:

> > > Why does the assert fail?
> > 
> > 
> > This line here swaps nodes: https://github.com/llvm/llvm-project/blob/d6c848db4a97103e19c398848bde0876a2c4c88e/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp#L21487
> > It happens when building `526.blender_r/src/blender/source/blender/blenloader/intern/readfile.c`
> 
> If I remember correctly, the NeedRotate flag prevents the code from using vectors doesn't it? Using a ROTL would only work for scalars.

Indeed, the code that triggers the assert fail is trying to merge two f32 into an i64

https://github.com/llvm/llvm-project/pull/130430