[all-commits] [llvm/llvm-project] a60dea: [ConstantHoisting] Don't attempt to hoist Constant...

[Paul Walker via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a60deaa2046b2aafc4ba2542d6ad42b80af054b0
      https://github.com/llvm/llvm-project/commit/a60deaa2046b2aafc4ba2542d6ad42b80af054b0
  Author: Paul Walker <paul.walker at arm.com>
  Date:   2024-03-18 (Mon, 18 Mar 2024)

  Changed paths:
    M llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
    M llvm/test/Transforms/ConstantHoisting/AArch64/large-immediate.ll

  Log Message:
  -----------
  [ConstantHoisting] Don't attempt to hoist ConstantInt vectors. (#85416)

The pass uses the TTI hook getIntImmCostIntrin that only supports scalar
integer types. Whilst hoisting expensive vector constant is likely
worthwhile, this is new behaviour and so I've followed the path taken by
the GEP variant of collectConstantCandidates and simply bail for vector
types.



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