getAnalysisUsage - Subclasses that override getAnalysisUsage must call this.
Declared in <llvm/CodeGen/MachineFunctionPass.h>
virtual
void
getAnalysisUsage(AnalysisUsage& AU) const override;
For MachineFunctionPasses, calling AU.preservesCFG() indicates that the pass does not modify the MachineBasicBlock CFG.
| Name | Description |
|---|---|
| AU | Analysis usage object to update with this pass's requirements. |