Add a new MachineBasicBlock utility function, isLayoutSuccessor, that

can be used when deciding if a block can transfer control to another
via a fall-through instead of a branch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56968 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-10-02 22:09:09 +00:00
parent e4a5ea3130
commit 6ade6f55a8
2 changed files with 12 additions and 0 deletions

View File

@@ -254,6 +254,11 @@ bool MachineBasicBlock::isSuccessor(MachineBasicBlock *MBB) const {
return I != Successors.end();
}
bool MachineBasicBlock::isLayoutSuccessor(MachineBasicBlock *MBB) const {
MachineFunction::const_iterator I(this);
return next(I) == MachineFunction::const_iterator(MBB);
}
/// removeFromParent - This method unlinks 'this' from the containing function,
/// and returns it, but does not delete it.
MachineBasicBlock *MachineBasicBlock::removeFromParent() {