commit 221a4371f95ebdb25ac7d4363accb35c88cb5ea4
author Dan Gohman <gohman@apple.com> Mon Jul 07 23:14:23 2008 +0000
committer Dan Gohman <gohman@apple.com> Mon Jul 07 23:14:23 2008 +0000
tree 24fe54b796f3f450ba6aff12b7357068ca66e341
parent ed825d11548be9f8268490d26d0d0bab0347d6fd

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

lib/Target/Alpha/AlphaISelLowering.cpp

diff --git a/lib/Target/Alpha/AlphaISelLowering.cpp b/lib/Target/Alpha/AlphaISelLowering.cpp
index bf3a31d..0f7fd80 100644
--- a/lib/Target/Alpha/AlphaISelLowering.cpp
+++ b/lib/Target/Alpha/AlphaISelLowering.cpp
@@ -662,18 +662,18 @@
   //test sc and maybe branck to start
   //exit:
   const BasicBlock *LLVM_BB = BB->getBasicBlock();
-  ilist<MachineBasicBlock>::iterator It = BB;
+  MachineFunction::iterator It = BB;
   ++It;
   
   MachineBasicBlock *thisMBB = BB;
-  MachineBasicBlock *llscMBB = new MachineBasicBlock(LLVM_BB);
-  MachineBasicBlock *sinkMBB = new MachineBasicBlock(LLVM_BB);
+  MachineFunction *F = BB->getParent();
+  MachineBasicBlock *llscMBB = F->CreateMachineBasicBlock(LLVM_BB);
+  MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
 
   sinkMBB->transferSuccessors(thisMBB);
 
-  MachineFunction *F = BB->getParent();
-  F->getBasicBlockList().insert(It, llscMBB);
-  F->getBasicBlockList().insert(It, sinkMBB);
+  F->insert(It, llscMBB);
+  F->insert(It, sinkMBB);
 
   BuildMI(thisMBB, TII->get(Alpha::BR)).addMBB(llscMBB);
   
@@ -719,7 +719,7 @@
   thisMBB->addSuccessor(llscMBB);
   llscMBB->addSuccessor(llscMBB);
   llscMBB->addSuccessor(sinkMBB);
-  delete MI;   // The pseudo instruction is gone now.
+  F->DeleteMachineInstr(MI);   // The pseudo instruction is gone now.
 
   return sinkMBB;
 }