3 files changed, 6 insertions, 24 deletions
diff --git a/lib/CodeGen/ExecutionDepsFix.cpp b/lib/CodeGen/ExecutionDepsFix.cpp
index 4ec75cdfec..c057c1bcdc 100644
--- a/lib/CodeGen/ExecutionDepsFix.cpp
+++ b/lib/CodeGen/ExecutionDepsFix.cpp
@@ -654,11 +654,10 @@ bool ExeDepsFix::runOnMachineFunction(MachineFunction &mf) {
   bool anyregs = false;
   for (TargetRegisterClass::const_iterator I = RC->begin(), E = RC->end();
        I != E; ++I)
-    for (const unsigned *AI = TRI->getOverlaps(*I); *AI; ++AI)
-      if (MF->getRegInfo().isPhysRegUsed(*AI)) {
-        anyregs = true;
-        break;
-      }
+    if (MF->getRegInfo().isPhysRegOrOverlapUsed(*I)) {
+      anyregs = true;
+      break;
+    }
   if (!anyregs) return false;
 
   // Initialize the AliasMap on the first use.
diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index b4fd1cb4f5..dd0a83a90a 100644
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -224,17 +224,9 @@ void PEI::calculateCalleeSavedRegisters(MachineFunction &Fn) {
   std::vector<CalleeSavedInfo> CSI;
   for (unsigned i = 0; CSRegs[i]; ++i) {
     unsigned Reg = CSRegs[i];
-    if (Fn.getRegInfo().isPhysRegUsed(Reg)) {
+    if (Fn.getRegInfo().isPhysRegOrOverlapUsed(Reg)) {
       // If the reg is modified, save it!
       CSI.push_back(CalleeSavedInfo(Reg));
-    } else {
-      for (const unsigned *AliasSet = RegInfo->getAliasSet(Reg);
-           *AliasSet; ++AliasSet) {  // Check alias registers too.
-        if (Fn.getRegInfo().isPhysRegUsed(*AliasSet)) {
-          CSI.push_back(CalleeSavedInfo(Reg));
-          break;
-        }
-      }
     }
   }
 
diff --git a/lib/Target/ARM/ARMFrameLowering.cpp b/lib/Target/ARM/ARMFrameLowering.cpp
index 06944b1ca7..41b4b7ec12 100644
--- a/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/lib/Target/ARM/ARMFrameLowering.cpp
@@ -898,18 +898,9 @@ ARMFrameLowering::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
   for (unsigned i = 0; CSRegs[i]; ++i) {
     unsigned Reg = CSRegs[i];
     bool Spilled = false;
-    if (MF.getRegInfo().isPhysRegUsed(Reg)) {
+    if (MF.getRegInfo().isPhysRegOrOverlapUsed(Reg)) {
       Spilled = true;
       CanEliminateFrame = false;
-    } else {
-      // Check alias registers too.
-      for (const unsigned *Aliases =
-             RegInfo->getAliasSet(Reg); *Aliases; ++Aliases) {
-        if (MF.getRegInfo().isPhysRegUsed(*Aliases)) {
-          Spilled = true;
-          CanEliminateFrame = false;
-        }
-      }
     }
 
     if (!ARM::GPRRegisterClass->contains(Reg))