[PATCH] D20335: [AMDGPU] Emit debugger prologue and emit the rest of the debugger fields in the kernel code header

[Konstantin Zhuravlyov via llvm-commits]

kzhuravl created this revision.
kzhuravl added reviewers: arsenm, tstellarAMD.
kzhuravl added a subscriber: llvm-commits.
Herald added subscribers: kzhuravl, arsenm.

Debugger prologue is emitted if -mattr=+amdgpu-debugger-emit-prologue.

Debugger prologue writes work group IDs and work item IDs to scratch memory at fixed location in the following format:
  - offset 0:  work group ID x
  - offset 4:  work group ID y
  - offset 8:  work group ID z
  - offset 16: work item ID x
  - offset 20: work item ID y
  - offset 24: work item ID z

Set
  - amd_kernel_code_t::debug_wavefront_private_segment_offset_sgpr to scratch wave offset reg
  - amd_kernel_code_t::debug_private_segment_buffer_sgpr to scratch rsrc reg
  - amd_kernel_code_t::is_debug_supported to true if all debugger features are enabled

http://reviews.llvm.org/D20335

Files:
  lib/Target/AMDGPU/AMDGPU.td
  lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
  lib/Target/AMDGPU/AMDGPUAsmPrinter.h
  lib/Target/AMDGPU/AMDGPUSubtarget.cpp
  lib/Target/AMDGPU/AMDGPUSubtarget.h
  lib/Target/AMDGPU/SIFrameLowering.cpp
  lib/Target/AMDGPU/SIFrameLowering.h
  lib/Target/AMDGPU/SIISelLowering.cpp
  lib/Target/AMDGPU/SIInstructions.td
  lib/Target/AMDGPU/SIMachineFunctionInfo.cpp
  lib/Target/AMDGPU/SIMachineFunctionInfo.h
  lib/Target/AMDGPU/SIRegisterInfo.cpp
  test/CodeGen/AMDGPU/debugger-emit-prologue.ll

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