LivePhysRegs: Rework constructor + documentation; NFC
- Take reference instead of pointer to a TRI that cannot be nullptr.
- Improve documentation comments.
llvm-svn: 304038
diff --git a/llvm/lib/Target/PowerPC/PPCExpandISEL.cpp b/llvm/lib/Target/PowerPC/PPCExpandISEL.cpp
index ebd414b..41e3190 100644
--- a/llvm/lib/Target/PowerPC/PPCExpandISEL.cpp
+++ b/llvm/lib/Target/PowerPC/PPCExpandISEL.cpp
@@ -339,7 +339,7 @@
// Note: Cannot use stepBackward instead since we are using the Reg
// liveness state at the end of MBB (liveOut of MBB) as the liveIn for
// NewSuccessor. Otherwise, will cause cyclic dependence.
- LivePhysRegs LPR(MF->getSubtarget<PPCSubtarget>().getRegisterInfo());
+ LivePhysRegs LPR(*MF->getSubtarget<PPCSubtarget>().getRegisterInfo());
SmallVector<std::pair<unsigned, const MachineOperand *>, 2> Clobbers;
for (MachineInstr &MI : *MBB)
LPR.stepForward(MI, Clobbers);