[all-commits] [llvm/llvm-project] 35a392: [X86] widenSubVector - widen from smaller build ve...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 35a392553d790064566d4430f249b1e740052dfa
      https://github.com/llvm/llvm-project/commit/35a392553d790064566d4430f249b1e740052dfa
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-01-10 (Fri, 10 Jan 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/shuffle-vs-trunc-512.ll
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx.ll

  Log Message:
  -----------
  [X86] widenSubVector - widen from smaller build vector if the upper elements are already the same padding elements (#122445)

Further simplifies some shuffle masks to help additional combines



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