[all-commits] [llvm/llvm-project] 8f968f: [AggressiveInstCombine] Make cttz fold more resili...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f968fe3ec3ce0d2a77d4ebffb4f5a92f66d0516
      https://github.com/llvm/llvm-project/commit/8f968fe3ec3ce0d2a77d4ebffb4f5a92f66d0516
  Author: David Green <david.green at arm.com>
  Date:   2025-07-31 (Thu, 31 Jul 2025)

  Changed paths:
    M llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
    M llvm/test/Transforms/AggressiveInstCombine/lower-table-based-cttz-basics.ll
    M llvm/test/Transforms/AggressiveInstCombine/negative-lower-table-based-cttz.ll
    M llvm/test/Transforms/PhaseOrdering/lower-table-based-cttz.ll

  Log Message:
  -----------
  [AggressiveInstCombine] Make cttz fold more resiliant to non-array geps (#150896)

Similar to #150639 this fixes the AggressiveInstCombine fold for convert
tables to cttz instructions if the gep types are not array types. i.e
`gep i16 @glob, i64 %idx` instead of `gep [64 x i16] @glob, i64 0, i64 %idx`.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications