[all-commits] [llvm/llvm-project] f737df: [AArch64][CostModel] Increase the cost of illegal ...

[Graham Hunter via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f737df73a3d8549bf52719c8df41aca091bd7efb
      https://github.com/llvm/llvm-project/commit/f737df73a3d8549bf52719c8df41aca091bd7efb
  Author: Graham Hunter <graham.hunter at arm.com>
  Date:   2025-03-25 (Tue, 25 Mar 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/AArch64/sve-cast.ll
    A llvm/test/Analysis/CostModel/AArch64/sve-itofp.ll

  Log Message:
  -----------
  [AArch64][CostModel] Increase the cost of illegal SVE int-to-fp converts (#130756)

If a scalable vector uitofp or sitofp effectively extends the size of
each element as part of the conversion, the AArch64 backend
may need to plant multiple unpacks before converting. Increase
the cost in those cases to account for this.



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