Reverting r243386 because it has serious post-commit concerns that have not been addressed. Also reverts r243389, which relied on this commit.
llvm-svn: 243527
diff --git a/llvm/lib/CodeGen/MachineBasicBlock.cpp b/llvm/lib/CodeGen/MachineBasicBlock.cpp
index f60e6bd..5d3f7eb 100644
--- a/llvm/lib/CodeGen/MachineBasicBlock.cpp
+++ b/llvm/lib/CodeGen/MachineBasicBlock.cpp
@@ -332,6 +332,11 @@
LiveIns.erase(I);
}
+bool MachineBasicBlock::isLiveIn(unsigned Reg) const {
+ livein_iterator I = std::find(livein_begin(), livein_end(), Reg);
+ return I != livein_end();
+}
+
unsigned
MachineBasicBlock::addLiveIn(unsigned PhysReg, const TargetRegisterClass *RC) {
assert(getParent() && "MBB must be inserted in function");