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author | Dan Gohman <gohman@apple.com> | 2008-07-07 23:14:23 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2008-07-07 23:14:23 +0000 |
commit | 221a4371f95ebdb25ac7d4363accb35c88cb5ea4 (patch) | |
tree | 24fe54b796f3f450ba6aff12b7357068ca66e341 /lib/CodeGen/TargetInstrInfoImpl.cpp | |
parent | ed825d11548be9f8268490d26d0d0bab0347d6fd (diff) | |
download | external_llvm-221a4371f95ebdb25ac7d4363accb35c88cb5ea4.zip external_llvm-221a4371f95ebdb25ac7d4363accb35c88cb5ea4.tar.gz external_llvm-221a4371f95ebdb25ac7d4363accb35c88cb5ea4.tar.bz2 |
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
Diffstat (limited to 'lib/CodeGen/TargetInstrInfoImpl.cpp')
-rw-r--r-- | lib/CodeGen/TargetInstrInfoImpl.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/CodeGen/TargetInstrInfoImpl.cpp b/lib/CodeGen/TargetInstrInfoImpl.cpp index ff9c129..4e7fec3 100644 --- a/lib/CodeGen/TargetInstrInfoImpl.cpp +++ b/lib/CodeGen/TargetInstrInfoImpl.cpp @@ -40,7 +40,9 @@ MachineInstr *TargetInstrInfoImpl::commuteInstruction(MachineInstr *MI, // Create a new instruction. unsigned Reg0 = ChangeReg0 ? Reg2 : MI->getOperand(0).getReg(); bool Reg0IsDead = MI->getOperand(0).isDead(); - return BuildMI(MI->getDesc()).addReg(Reg0, true, false, false, Reg0IsDead) + MachineFunction &MF = *MI->getParent()->getParent(); + return BuildMI(MF, MI->getDesc()) + .addReg(Reg0, true, false, false, Reg0IsDead) .addReg(Reg2, false, false, Reg2IsKill) .addReg(Reg1, false, false, Reg1IsKill); } @@ -104,7 +106,7 @@ void TargetInstrInfoImpl::reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned DestReg, const MachineInstr *Orig) const { - MachineInstr *MI = Orig->clone(); + MachineInstr *MI = MBB.getParent()->CloneMachineInstr(Orig); MI->getOperand(0).setReg(DestReg); MBB.insert(I, MI); } |