lib/CodeGen/MachinePassRegistry.cpp

   1 //===-- CodeGen/MachineInstr.cpp ------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the machine function pass registry for register allocators
  11 // and instruction schedulers.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm/CodeGen/MachinePassRegistry.h"
  16
  17 using namespace llvm;
  18
  19 void MachinePassRegistryListener::anchor() { }
  20
  21 /// setDefault - Set the default constructor by name.
  22 void MachinePassRegistry::setDefault(StringRef Name) {
  23   MachinePassCtor Ctor = nullptr;
  24   for(MachinePassRegistryNode *R = getList(); R; R = R->getNext()) {
  25     if (R->getName() == Name) {
  26       Ctor = R->getCtor();
  27       break;
  28     }
  29   }
  30   assert(Ctor && "Unregistered pass name");
  31   setDefault(Ctor);
  32 }
  33
  34 /// Add - Adds a function pass to the registration list.
  35 ///
  36 void MachinePassRegistry::Add(MachinePassRegistryNode *Node) {
  37   Node->setNext(List);
  38   List = Node;
  39   if (Listener) Listener->NotifyAdd(Node->getName(),
  40                                     Node->getCtor(),
  41                                     Node->getDescription());
  42 }
  43
  44
  45 /// Remove - Removes a function pass from the registration list.
  46 ///
  47 void MachinePassRegistry::Remove(MachinePassRegistryNode *Node) {
  48   for (MachinePassRegistryNode **I = &List; *I; I = (*I)->getNextAddress()) {
  49     if (*I == Node) {
  50       if (Listener) Listener->NotifyRemove(Node->getName());
  51       *I = (*I)->getNext();
  52       break;
  53     }
  54   }
  55 }