Change MBB autonumber a bit to get the reverse mapping as well as a forward
mapping
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14521 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index f4ef3ee..a8a64db 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -29,27 +29,23 @@
// MBBs start out as #-1. When a MBB is added to a MachineFunction, it
// gets the next available unique MBB number. If it is removed from a
// MachineFunction, it goes back to being #-1.
-void ilist_traits<MachineBasicBlock>::addNodeToList (MachineBasicBlock* N)
-{
+void ilist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
assert(N->Parent == 0 && "machine instruction already in a basic block");
N->Parent = Parent;
- N->Number = Parent->getNextMBBNumber();
+ N->Number = Parent->addToMBBNumbering(N);
LeakDetector::removeGarbageObject(N);
-
-
}
-void ilist_traits<MachineBasicBlock>::removeNodeFromList (MachineBasicBlock* N)
-{
+void ilist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
assert(N->Parent != 0 && "machine instruction not in a basic block");
- N->Parent = 0;
+ N->Parent->removeFromMBBNumbering(N->Number);
N->Number = -1;
+ N->Parent = 0;
LeakDetector::addGarbageObject(N);
}
-MachineInstr* ilist_traits<MachineInstr>::createNode()
-{
+MachineInstr* ilist_traits<MachineInstr>::createNode() {
MachineInstr* dummy = new MachineInstr(0, 0);
LeakDetector::removeGarbageObject(dummy);
return dummy;