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| author | Dan Gohman <gohman@apple.com> | 2008-07-07 23:14:23 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-07-07 23:14:23 +0000 |
| commit | 8e5f2c6f65841542e2a7092553fe42a00048e4c7 (patch) | |
| tree | 24fe54b796f3f450ba6aff12b7357068ca66e341 /lib/CodeGen/IfConversion.cpp | |
| parent | 0e5f1306b059b62d7725f324e087efbc8e7a782d (diff) | |
| download | llvm-8e5f2c6f65841542e2a7092553fe42a00048e4c7.tar.gz llvm-8e5f2c6f65841542e2a7092553fe42a00048e4c7.tar.bz2 llvm-8e5f2c6f65841542e2a7092553fe42a00048e4c7.tar.xz | |
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/IfConversion.cpp')
| -rw-r--r-- | lib/CodeGen/IfConversion.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/IfConversion.cpp b/lib/CodeGen/IfConversion.cpp index 67182ba4bd..b59674c41a 100644 --- a/lib/CodeGen/IfConversion.cpp +++ b/lib/CodeGen/IfConversion.cpp @@ -1134,6 +1134,8 @@ void IfConverter::PredicateBlock(BBInfo &BBI, void IfConverter::CopyAndPredicateBlock(BBInfo &ToBBI, BBInfo &FromBBI, std::vector<MachineOperand> &Cond, bool IgnoreBr) { + MachineFunction &MF = *ToBBI.BB->getParent(); + for (MachineBasicBlock::iterator I = FromBBI.BB->begin(), E = FromBBI.BB->end(); I != E; ++I) { const TargetInstrDesc &TID = I->getDesc(); @@ -1142,7 +1144,7 @@ void IfConverter::CopyAndPredicateBlock(BBInfo &ToBBI, BBInfo &FromBBI, if (IgnoreBr && !isPredicated && TID.isBranch()) break; - MachineInstr *MI = I->clone(); + MachineInstr *MI = MF.CloneMachineInstr(I); ToBBI.BB->insert(ToBBI.BB->end(), MI); ToBBI.NonPredSize++; |