[all-commits] [llvm/llvm-project] 0daf9b: [X86][LegalizeTypes] Add SoftPromoteHalf support S...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 0daf9b8e41327b1511b2bbc272184ff4fdb8de79
      https://github.com/llvm/llvm-project/commit/0daf9b8e41327b1511b2bbc272184ff4fdb8de79
  Author: Craig Topper <craig.topper at gmail.com>
  Date:   2020-02-11 (Tue, 11 Feb 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/ISDOpcodes.h
    M llvm/include/llvm/CodeGen/SelectionDAGNodes.h
    M llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.h
    M llvm/lib/Target/X86/X86InstrAVX512.td
    M llvm/lib/Target/X86/X86InstrFragmentsSIMD.td
    M llvm/lib/Target/X86/X86InstrSSE.td

  Log Message:
  -----------
  [X86][LegalizeTypes] Add SoftPromoteHalf support STRICT_FP_EXTEND and STRICT_FP_ROUND

This adds a strict version of FP16_TO_FP and FP_TO_FP16 and uses
them to implement soft promotion for the half type. This is
enough to provide basic support for __fp16 with strictfp.

Add the necessary X86 support to use VCVTPS2PH/VCVTPH2PS when F16C
is enabled.