[all-commits] [llvm/llvm-project] 8b4d73: [X86] Enable ISD::TRUNCATE support from v2i64 and ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8b4d7333f4a16457f471d1790638f742e7f2c5fb
      https://github.com/llvm/llvm-project/commit/8b4d7333f4a16457f471d1790638f742e7f2c5fb
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2023-07-22 (Sat, 22 Jul 2023)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp

  Log Message:
  -----------
  [X86] Enable ISD::TRUNCATE support from v2i64 and v4i64 nodes

Addresses the last comment from D154592 - ensure we only truncate with PACKSS/PACKUS when it can be cheaply done (and use shuffles otherwise).