Move LiveUnionArray into LiveIntervalUnion.h

It is useful outside RegAllocBase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158041 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 26 deletions

diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp
index 5b2ec5e5aa..3349b4448c 100644
--- a/lib/CodeGen/RegAllocBase.cpp
+++ b/lib/CodeGen/RegAllocBase.cpp
@@ -52,10 +52,11 @@ bool RegAllocBase::VerifyEnabled = false;
 void RegAllocBase::verify() {
   LiveVirtRegBitSet VisitedVRegs;
   OwningArrayPtr<LiveVirtRegBitSet>
-    unionVRegs(new LiveVirtRegBitSet[PhysReg2LiveUnion.numRegs()]);
+    unionVRegs(new LiveVirtRegBitSet[TRI->getNumRegs()]);
 
   // Verify disjoint unions.
-  for (unsigned PhysReg = 0; PhysReg < PhysReg2LiveUnion.numRegs(); ++PhysReg) {
+  for (unsigned PhysReg = 0, NumRegs = TRI->getNumRegs(); PhysReg != NumRegs;
+       ++PhysReg) {
     DEBUG(PhysReg2LiveUnion[PhysReg].print(dbgs(), TRI));
     LiveVirtRegBitSet &VRegs = unionVRegs[PhysReg];
     PhysReg2LiveUnion[PhysReg].verify(VRegs);
@@ -89,16 +90,6 @@ void RegAllocBase::verify() {
 //                         RegAllocBase Implementation
 //===----------------------------------------------------------------------===//
 
-// Instantiate a LiveIntervalUnion for each physical register.
-void RegAllocBase::LiveUnionArray::init(LiveIntervalUnion::Allocator &allocator,
-                                        unsigned NRegs) {
-  NumRegs = NRegs;
-  Array =
-    static_cast<LiveIntervalUnion*>(malloc(sizeof(LiveIntervalUnion)*NRegs));
-  for (unsigned r = 0; r != NRegs; ++r)
-    new(Array + r) LiveIntervalUnion(allocator);
-}
-
 void RegAllocBase::init(VirtRegMap &vrm, LiveIntervals &lis) {
   NamedRegionTimer T("Initialize", TimerGroupName, TimePassesIsEnabled);
   TRI = &vrm.getTargetRegInfo();
@@ -109,25 +100,15 @@ void RegAllocBase::init(VirtRegMap &vrm, LiveIntervals &lis) {
   RegClassInfo.runOnMachineFunction(vrm.getMachineFunction());
 
   const unsigned NumRegs = TRI->getNumRegs();
-  if (NumRegs != PhysReg2LiveUnion.numRegs()) {
+  if (NumRegs != PhysReg2LiveUnion.size()) {
     PhysReg2LiveUnion.init(UnionAllocator, NumRegs);
     // Cache an interferece query for each physical reg
-    Queries.reset(new LiveIntervalUnion::Query[PhysReg2LiveUnion.numRegs()]);
+    Queries.reset(new LiveIntervalUnion::Query[NumRegs]);
   }
 }
 
-void RegAllocBase::LiveUnionArray::clear() {
-  if (!Array)
-    return;
-  for (unsigned r = 0; r != NumRegs; ++r)
-    Array[r].~LiveIntervalUnion();
-  free(Array);
-  NumRegs =  0;
-  Array = 0;
-}
-
 void RegAllocBase::releaseMemory() {
-  for (unsigned r = 0, e = PhysReg2LiveUnion.numRegs(); r != e; ++r)
+  for (unsigned r = 0, e = PhysReg2LiveUnion.size(); r != e; ++r)
     PhysReg2LiveUnion[r].clear();
 }
 
@@ -253,7 +234,8 @@ void RegAllocBase::addMBBLiveIns(MachineFunction *MF) {
     return;
 
   LiveIntervalUnion::SegmentIter SI;
-  for (unsigned PhysReg = 0; PhysReg < PhysReg2LiveUnion.numRegs(); ++PhysReg) {
+  for (unsigned PhysReg = 0, NumRegs = TRI->getNumRegs(); PhysReg != NumRegs;
+       ++PhysReg) {
     LiveIntervalUnion &LiveUnion = PhysReg2LiveUnion[PhysReg];
     if (LiveUnion.empty())
       continue;