[all-commits] [llvm/llvm-project] c3e25e: [VPlan] Add VPInst::getNumOperandsForOpcode, use t...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c3e25e7fc463932d763a0405e8d44151e8679b66
      https://github.com/llvm/llvm-project/commit/c3e25e7fc463932d763a0405e8d44151e8679b66
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-06-24 (Tue, 24 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/unittests/Transforms/Vectorize/VPlanTest.cpp

  Log Message:
  -----------
  [VPlan] Add VPInst::getNumOperandsForOpcode, use to verify in ctor (NFC) (#142284)

Add a new getNumOperandsForOpcode helper to determine the number of
operands from the opcode. For now, it is used to verify the number
operands at VPInstruction construction.

It returns -1 for a few opcodes where the number of operands cannot be
determined (GEP, Switch, PHI, Call).

This can also be used in a follow-up to determine if a VPInstruction is
masked based on the number of arguments.

PR: https://github.com/llvm/llvm-project/pull/142284



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