[all-commits] [llvm/llvm-project] bec4c7: [InstCombine] Unpack scalable struct loads/stores....

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bec4c7f5f7fb044dbc7b134a00f4cf29b5cb2b48
      https://github.com/llvm/llvm-project/commit/bec4c7f5f7fb044dbc7b134a00f4cf29b5cb2b48
  Author: David Green <david.green at arm.com>
  Date:   2025-01-23 (Thu, 23 Jan 2025)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
    M llvm/test/Transforms/InstCombine/scalable-vector-struct.ll

  Log Message:
  -----------
  [InstCombine] Unpack scalable struct loads/stores. (#123986)

This teaches unpackLoadToAggregate and unpackStoreToAggregate to unpack
scalable structs to individual loads/stores with insertvalues /
extractvalues. The gep used for the offsets uses an i8 ptradd as opposed
to a struct gep, as the geps for scalable structs are not supported and
we canonicalize to i8.



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