Reapply r99881 with some fixes: only call destructor in releaseMemory!

llvm-svn: 99883

2 files changed, 6 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/LiveInterval.cpp b/llvm/lib/CodeGen/LiveInterval.cpp
index e207f607dad..7af25dd7e88 100644
--- a/llvm/lib/CodeGen/LiveInterval.cpp
+++ b/llvm/lib/CodeGen/LiveInterval.cpp
@@ -305,7 +305,6 @@ void LiveInterval::removeRange(SlotIndex Start, SlotIndex End,
             do {
               VNInfo *VNI = valnos.back();
               valnos.pop_back();
-              VNI->~VNInfo();
             } while (!valnos.empty() && valnos.back()->isUnused());
           } else {
             ValNo->setIsUnused(true);
@@ -353,7 +352,6 @@ void LiveInterval::removeValNo(VNInfo *ValNo) {
     do {
       VNInfo *VNI = valnos.back();
       valnos.pop_back();
-      VNI->~VNInfo();
     } while (!valnos.empty() && valnos.back()->isUnused());
   } else {
     ValNo->setIsUnused(true);
@@ -581,7 +579,6 @@ void LiveInterval::MergeValueInAsValue(
           do {
             VNInfo *VNI = valnos.back();
             valnos.pop_back();
-            VNI->~VNInfo();
           } while (!valnos.empty() && valnos.back()->isUnused());
         } else {
           V1->setIsUnused(true);
@@ -658,7 +655,6 @@ void LiveInterval::MergeInClobberRanges(LiveIntervals &li_,
   if (UnusedValNo) {
     // Delete the last unused val#.
     valnos.pop_back();
-    UnusedValNo->~VNInfo();
   }
 }
 
@@ -751,7 +747,6 @@ VNInfo* LiveInterval::MergeValueNumberInto(VNInfo *V1, VNInfo *V2) {
     do {
       VNInfo *VNI = valnos.back();
       valnos.pop_back();
-      VNI->~VNInfo();
     } while (valnos.back()->isUnused());
   } else {
     V1->setIsUnused(true);
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index e657c46c721..53366b9f074 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -82,6 +82,11 @@ void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
   MachineFunctionPass::getAnalysisUsage(AU);
 }
 
+static void VNInfoDTor(void* Ptr)
+{
+   reinterpret_cast<VNInfo*>(Ptr)->~VNInfo();
+}
+
 void LiveIntervals::releaseMemory() {
   // Free the live intervals themselves.
   for (DenseMap<unsigned, LiveInterval*>::iterator I = r2iMap_.begin(),
@@ -91,7 +96,7 @@ void LiveIntervals::releaseMemory() {
   r2iMap_.clear();
 
   // Release VNInfo memroy regions after all VNInfo objects are dtor'd.
-  VNInfoAllocator.Reset();
+  VNInfoAllocator.Reset((unsigned)sizeof(VNInfo), alignof<VNInfo>(), VNInfoDTor);
   while (!CloneMIs.empty()) {
     MachineInstr *MI = CloneMIs.back();
     CloneMIs.pop_back();