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/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index 10a5e8c..d33f3d2 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -670,7 +670,7 @@
}
void ScheduleDAG::AddMemOperand(MachineInstr *MI, const MachineMemOperand &MO) {
- MI->addMemOperand(MO);
+ MI->addMemOperand(*MF, MO);
}
/// getSubRegisterRegClass - Returns the register class of specified register
@@ -726,7 +726,7 @@
unsigned SubIdx = cast<ConstantSDNode>(Node->getOperand(1))->getValue();
// Create the extract_subreg machine instruction.
- MachineInstr *MI = BuildMI(TII->get(TargetInstrInfo::EXTRACT_SUBREG));
+ MachineInstr *MI = BuildMI(*MF, TII->get(TargetInstrInfo::EXTRACT_SUBREG));
// Figure out the register class to create for the destreg.
unsigned VReg = getVR(Node->getOperand(0), VRBaseMap);
@@ -772,7 +772,7 @@
}
// Create the insert_subreg or subreg_to_reg machine instruction.
- MachineInstr *MI = BuildMI(TII->get(Opc));
+ MachineInstr *MI = BuildMI(*MF, TII->get(Opc));
MI->addOperand(MachineOperand::CreateReg(VRBase, true));
// If creating a subreg_to_reg, then the first input operand
@@ -829,7 +829,7 @@
#endif
// Create the new machine instruction.
- MachineInstr *MI = BuildMI(II);
+ MachineInstr *MI = BuildMI(*MF, II);
// Add result register values for things that are defined by this
// instruction.
@@ -853,7 +853,7 @@
else {
DOUT << "Sched: COMMUTED TO: " << *NewMI;
if (MI != NewMI) {
- delete MI;
+ MF->DeleteMachineInstr(MI);
MI = NewMI;
}
++NumCommutes;
@@ -928,7 +928,7 @@
--NumOps; // Ignore the flag operand.
// Create the inline asm machine instruction.
- MachineInstr *MI = BuildMI(TII->get(TargetInstrInfo::INLINEASM));
+ MachineInstr *MI = BuildMI(*MF, TII->get(TargetInstrInfo::INLINEASM));
// Add the asm string as an external symbol operand.
const char *AsmStr =