[all-commits] [llvm/llvm-project] 9a976f: [llvm] Always use TargetConstant for FP_ROUND ISD ...

[David Truby via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9a976f36615dbe15e76c12b22f711b2e597a8e51
      https://github.com/llvm/llvm-project/commit/9a976f36615dbe15e76c12b22f711b2e597a8e51
  Author: David Truby <david.truby at arm.com>
  Date:   2022-08-03 (Wed, 03 Aug 2022)

  Changed paths:
    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/LegalizeVectorOps.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/sve-fcopysign.ll

  Log Message:
  -----------
  [llvm] Always use TargetConstant for FP_ROUND ISD Nodes

This patch ensures consistency in the construction of FP_ROUND nodes
such that they always use ISD::TargetConstant instead of ISD::Constant.

This additionally fixes a bug in the AArch64 SVE backend where patterns
were matching against TargetConstant nodes and sometimes failing when
passed a Constant node.

Reviewed By: paulwalker-arm

Differential Revision: https://reviews.llvm.org/D130370