Remove liveout lists from MachineRegisterInfo.

All targets are now adding return value registers as implicit uses on
return instructions, and there is no longer a need for the live out
lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174417 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 2 insertions, 16 deletions

diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 4a9a62a704..1898222005 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -346,13 +346,6 @@ void MachineFunction::print(raw_ostream &OS, SlotIndexes *Indexes) const {
     }
     OS << '\n';
   }
-  if (RegInfo && !RegInfo->liveout_empty()) {
-    OS << "Function Live Outs:";
-    for (MachineRegisterInfo::liveout_iterator
-         I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I)
-      OS << ' ' << PrintReg(*I, TRI);
-    OS << '\n';
-  }
 
   for (const_iterator BB = begin(), E = end(); BB != E; ++BB) {
     OS << '\n';
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index d8b5fd4ea3..32d066894b 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -1515,12 +1515,12 @@ void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM,
       unsigned Reg = MO.getReg();
       if (TargetRegisterInfo::isPhysicalRegister(Reg)) {
         const MachineRegisterInfo &MRI = MF->getRegInfo();
-        if (MRI.use_empty(Reg) && !MRI.isLiveOut(Reg)) {
+        if (MRI.use_empty(Reg)) {
           bool HasAliasLive = false;
           for (MCRegAliasIterator AI(Reg, TM->getRegisterInfo(), true);
                AI.isValid(); ++AI) {
             unsigned AliasReg = *AI;
-            if (!MRI.use_empty(AliasReg) || MRI.isLiveOut(AliasReg)) {
+            if (!MRI.use_empty(AliasReg)) {
               HasAliasLive = true;
               break;
             }
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp
index 21877e52c2..a777f52cb2 100644
--- a/lib/CodeGen/MachineRegisterInfo.cpp
+++ b/lib/CodeGen/MachineRegisterInfo.cpp
@@ -283,13 +283,6 @@ bool MachineRegisterInfo::isLiveIn(unsigned Reg) const {
   return false;
 }
 
-bool MachineRegisterInfo::isLiveOut(unsigned Reg) const {
-  for (liveout_iterator I = liveout_begin(), E = liveout_end(); I != E; ++I)
-    if (*I == Reg)
-      return true;
-  return false;
-}
-
 /// getLiveInPhysReg - If VReg is a live-in virtual register, return the
 /// corresponding live-in physical register.
 unsigned MachineRegisterInfo::getLiveInPhysReg(unsigned VReg) const {