[PATCH] D63731: [AMDGPU] Prevent VGPR copies from moving across the EXEC mask definitions

[Alexander via Phabricator via llvm-commits]

alex-t updated this revision to Diff 214124.
alex-t added a comment.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

According the reviewer's request the check for implicit defs has been added.
New helper functions in MachineInstr.h are necessary because the current interface like MachineInstr::getNumExplicitDefs returns just the MCInstDesc::NumDefs for non variadic opcodes.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63731/new/

https://reviews.llvm.org/D63731

Files:
  llvm/include/llvm/CodeGen/MachineInstr.h
  llvm/lib/CodeGen/PeepholeOptimizer.cpp
  llvm/lib/Target/AMDGPU/SIFoldOperands.cpp
  llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
  llvm/test/CodeGen/AMDGPU/constant-fold-imm-immreg.mir

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