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from 2071889dd30 [AArch64][Falkor] Avoid HW prefetcher tag collisions (step 2) new da7ac1f435e AMDGPU: Figure out private memory regs after lowering new 5472b31175f AMDGPU: Annotate necessity of flat-scratch-init

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Summary of changes: lib/Target/AMDGPU/AMDGPUAnnotateKernelFeatures.cpp | 19 +++++- lib/Target/AMDGPU/SIFrameLowering.cpp | 11 ++-- lib/Target/AMDGPU/SIISelLowering.cpp | 65 ++++++++++++------- lib/Target/AMDGPU/SIISelLowering.h | 2 + lib/Target/AMDGPU/SIMachineFunctionInfo.cpp | 28 +++++---- lib/Target/AMDGPU/SIMachineFunctionInfo.h | 5 +- lib/Target/AMDGPU/SIRegisterInfo.cpp | 4 ++ lib/Target/AMDGPU/SIRegisterInfo.td | 13 +++- .../AMDGPU/annotate-kernel-features-hsa-call.ll | 41 ++++++++++++ test/CodeGen/AMDGPU/scratch-simple.ll | 72 ++++++++++++++-------- .../vgpr-spill-emergency-stack-slot-compute.ll | 36 ++++++++--- .../AMDGPU/vgpr-spill-emergency-stack-slot.ll | 6 +- 12 files changed, 219 insertions(+), 83 deletions(-)