[all-commits] [llvm/llvm-project] 112766: [SelectionDAG] Make sure FMF are propagated when g...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1127662c6dc2a276839c75a42238b11a3ad00f32
      https://github.com/llvm/llvm-project/commit/1127662c6dc2a276839c75a42238b11a3ad00f32
  Author: Craig Topper <craig.topper at intel.com>
  Date:   2020-10-05 (Mon, 05 Oct 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/SelectionDAG.h
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/fmf-propagation.ll

  Log Message:
  -----------
  [SelectionDAG] Make sure FMF are propagated when getSetcc canonicalizes FP constants to RHS.

getNode handling for ISD:SETCC calls FoldSETCC which can canonicalize
FP constants to the RHS. When this happens we should create the node
with the FMF that was requested. By using FlagInserter when can ensure
any calls to getNode/getSetcc during canonicalization will also get the flags.

Differential Revision: https://reviews.llvm.org/D88063