[llvm] [AArch64][GlobalISel] SIMD fpcvt codegen for rounding nodes (PR #165546)

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Lukacma wrote:

Apologies if I am missng smth obvious, but I dont think any of my code changes were added specifically to handle strictfp cases ? I only added the tests for strictfp cases to show, that the patterns added work for those nodes as well (at least with SDAG). Or are you suggesting, that instead of using any_* nodes to handle both cases with single pattern, I just use lrint and lround, to prevent strictfp nodes from matching ?

https://github.com/llvm/llvm-project/pull/165546