diff options
| -rw-r--r-- | llvm/include/llvm/CodeGen/GlobalISel/GISelChangeObserver.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/include/llvm/CodeGen/GlobalISel/GISelChangeObserver.h b/llvm/include/llvm/CodeGen/GlobalISel/GISelChangeObserver.h index a2876b62127..e5691cb3517 100644 --- a/llvm/include/llvm/CodeGen/GlobalISel/GISelChangeObserver.h +++ b/llvm/include/llvm/CodeGen/GlobalISel/GISelChangeObserver.h @@ -33,10 +33,17 @@ public: /// An instruction is about to be erased. virtual void erasingInstr(MachineInstr &MI) = 0; - /// An instruction was created and inserted into the function. + + /// An instruction has been created and inserted into the function. + /// Note that the instruction might not be a fully fledged instruction at this + /// point and won't be if the MachineFunction::Delegate is calling it. This is + /// because the delegate only sees the construction of the MachineInstr before + /// operands have been added. virtual void createdInstr(MachineInstr &MI) = 0; + /// This instruction is about to be mutated in some way. virtual void changingInstr(MachineInstr &MI) = 0; + /// This instruction was mutated in some way. virtual void changedInstr(MachineInstr &MI) = 0; |
