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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53212 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 1d161cf..7b0eaeb 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -73,7 +73,7 @@
// 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 @@
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) {