[all-commits] [llvm/llvm-project] 8f4b7e: [AMDGPU][CostModel] Refine cost model for control-...

[Daniil Fukalov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f4b7e94a2b4465b7dac889da286cbd26309457b
      https://github.com/llvm/llvm-project/commit/8f4b7e94a2b4465b7dac889da286cbd26309457b
  Author: dfukalov <daniil.fukalov at amd.com>
  Date:   2021-04-10 (Sat, 10 Apr 2021)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/include/llvm/CodeGen/BasicTTIImpl.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.h
    M llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h
    M llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
    M llvm/lib/Target/PowerPC/PPCTargetTransformInfo.h
    M llvm/lib/Target/X86/X86TargetTransformInfo.cpp
    M llvm/lib/Target/X86/X86TargetTransformInfo.h
    R llvm/test/Analysis/CostModel/AMDGPU/br.ll
    A llvm/test/Analysis/CostModel/AMDGPU/control-flow.ll
    M llvm/test/CodeGen/AMDGPU/unroll.ll
    M llvm/test/Transforms/LoopUnroll/AMDGPU/unroll-cost-addrspacecast.ll

  Log Message:
  -----------
  [AMDGPU][CostModel] Refine cost model for control-flow instructions.

Added cost estimation for switch instruction, updated costs of branches, fixed
phi cost.
Had to increase `-amdgpu-unroll-threshold-if` default value since conditional
branch cost (size) was corrected to higher value.
Test renamed to "control-flow.ll".

Removed redundant code in `X86TTIImpl::getCFInstrCost()` and
`PPCTTIImpl::getCFInstrCost()`.

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D96805