[all-commits] [llvm/llvm-project] aab2ff: [SDAG][X86] Form pseudo fmin/fmax from select_cc (...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: aab2ff0b9096df1d5168e293c81b6653e759890d
      https://github.com/llvm/llvm-project/commit/aab2ff0b9096df1d5168e293c81b6653e759890d
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2026-07-13 (Mon, 13 Jul 2026)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/X86/avx512fp16-fmaxnum.ll
    M llvm/test/CodeGen/X86/avx512fp16-fminnum.ll

  Log Message:
  -----------
  [SDAG][X86] Form pseudo fmin/fmax from select_cc (#208717)

Create PSEUDO_FMIN/PSEUDO_FMAX from SELECT_CC in addition to
SELECT/VSELECT.

Unfortunately we can't just do this in the common SimplifySelectCC()
helper because of the StrictFP handling and need to handle all three
cases explicitly.

I ran into this trying to use the ops on s390x, but there are also some
avx512 cases that benefit, so I split out this generalization.



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