Pool-allocation for MachineInstrs, MachineBasicBlocks, and

MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "Emit" phase of scheduling, as well as later phases
in CodeGen. Combined with other changes, this speeds up the
"instruction selection" phase of CodeGen by 10% in some cases.

llvm-svn: 53212

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index 1d161cf6e35..7b0eaeb341b 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -73,7 +73,7 @@ void LiveIntervals::releaseMemory() {
   // Release VNInfo memroy regions after all VNInfo objects are dtor'd.
   VNInfoAllocator.Reset();
   for (unsigned i = 0, e = ClonedMIs.size(); i != e; ++i)
-    delete ClonedMIs[i];
+    mf_->DeleteMachineInstr(ClonedMIs[i]);
 }
 
 void LiveIntervals::computeNumbering() {
@@ -1562,7 +1562,7 @@ addIntervalsForSpills(const LiveInterval &li,
       ReMatOrigDefs[VN] = ReMatDefMI;
       // Original def may be modified so we have to make a copy here. vrm must
       // delete these!
-      ReMatDefs[VN] = ReMatDefMI = ReMatDefMI->clone();
+      ReMatDefs[VN] = ReMatDefMI = mf_->CloneMachineInstr(ReMatDefMI);
 
       bool CanDelete = true;
       if (VNI->hasPHIKill) {