[all-commits] [llvm/llvm-project] 8aaaba: [CostModel] Unify getCastInstrCost

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8aaabadeced32a1cd959a5b1524b9c927e82bcc0
      https://github.com/llvm/llvm-project/commit/8aaabadeced32a1cd959a5b1524b9c927e82bcc0
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-05-26 (Tue, 26 May 2020)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
    M llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp
    M llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
    M llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
    M llvm/lib/Target/X86/X86TargetTransformInfo.cpp

  Log Message:
  -----------
  [CostModel] Unify getCastInstrCost

Add the remaining cast instruction opcodes to the base implementation
of getUserCost and directly return the result. This allows
getInstructionThroughput to return getUserCost for the casts. This
has required changes to PPC and SystemZ because they implement
getUserCost and/or getCastInstrCost with adjustments for vector
operations. Adjusts have also been made in the remaining backends
that implement the method so that they still produce a cost of zero
or one for cost kinds other than throughput.

Differential Revision: https://reviews.llvm.org/D79848