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1 //===- RegAllocBase.h - basic regalloc interface and driver -----*- C++ -*-===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
14 // - If virtual and physical register liveness is modeled using intervals, then
15 // on-the-fly interference checking is cheap. Furthermore, interferences can be
18 // - Register allocation complexity, and generated code performance is
32 // quality trade-off without relying on a particular theoretical solver.
34 //===----------------------------------------------------------------------===//
99   // The top-level driver. The output is a VirtRegMap that us updated with
110   /// enqueue - Add VirtReg to the priority queue of unassigned registers.
113   /// enqueue - Add VirtReg to the priority queue of unassigned registers.
116   /// dequeue - Return the next unassigned register, or NULL.
134   /// VerifyEnabled - True when -verify-regalloc is given.