MachineBasicBlock: Add liveins() method returning an iterator_range
llvm-svn: 245895
diff --git a/llvm/lib/CodeGen/MachineLICM.cpp b/llvm/lib/CodeGen/MachineLICM.cpp
index 3a6f9ea..ebef22e 100644
--- a/llvm/lib/CodeGen/MachineLICM.cpp
+++ b/llvm/lib/CodeGen/MachineLICM.cpp
@@ -534,10 +534,8 @@
// Conservatively treat live-in's as an external def.
// FIXME: That means a reload that're reused in successor block(s) will not
// be LICM'ed.
- for (MachineBasicBlock::livein_iterator I = BB->livein_begin(),
- E = BB->livein_end(); I != E; ++I) {
- unsigned Reg = *I;
- for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI)
+ for (unsigned LI : BB->liveins()) {
+ for (MCRegAliasIterator AI(LI, TRI, true); AI.isValid(); ++AI)
PhysRegDefs.set(*AI);
}