[PATCH] D17454: Insert nop for each high level source statement

[Konstantin Zhuravlyov via llvm-commits]

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

AMDGPUInsertDebugNops pass inserts DEBUG_NOP pseudo instructions before register allocation. AMDGPULowerDebugNops pass lowers DEBUG_NOP instructions to S_NOP instructions before machine code is emitted.

S_NOP for each high level source statement is needed for tools (i.e. debugger, profiler), which overwrite S_NOPs with S_TRAPs as they see fit.

http://reviews.llvm.org/D17454

Files:
  lib/Target/AMDGPU/AMDGPU.h
  lib/Target/AMDGPU/AMDGPUInsertNopsPass.cpp
  lib/Target/AMDGPU/AMDGPUInstrInfo.h
  lib/Target/AMDGPU/AMDGPUInstructions.td
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  lib/Target/AMDGPU/CMakeLists.txt

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