diff options
| author | Dan Gohman <gohman@apple.com> | 2010-10-20 00:31:05 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-10-20 00:31:05 +0000 |
| commit | f96e4bd2a3b11928af75fb7472288930d16fec0b (patch) | |
| tree | b8223b2b01587cbfe66bf9beed761e536d29fbca /lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | 8b95c3ebfbd492c2ac863df93e40c11fc2e914fd (diff) | |
Make CodeGen TBAA-aware.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116890 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index e2b1bb4b75..a68b7b0f94 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -2934,6 +2934,7 @@ void SelectionDAGBuilder::visitLoad(const LoadInst &I) { bool isVolatile = I.isVolatile(); bool isNonTemporal = I.getMetadata("nontemporal") != 0; unsigned Alignment = I.getAlignment(); + const MDNode *TBAAInfo = I.getMetadata(LLVMContext::MD_tbaa); SmallVector<EVT, 4> ValueVTs; SmallVector<uint64_t, 4> Offsets; @@ -2947,7 +2948,8 @@ void SelectionDAGBuilder::visitLoad(const LoadInst &I) { if (I.isVolatile()) // Serialize volatile loads with other side effects. Root = getRoot(); - else if (AA->pointsToConstantMemory(SV)) { + else if (AA->pointsToConstantMemory( + AliasAnalysis::Location(SV, AA->getTypeStoreSize(Ty), TBAAInfo))) { // Do not serialize (non-volatile) loads of constant memory with anything. Root = DAG.getEntryNode(); ConstantMemory = true; @@ -2965,7 +2967,7 @@ void SelectionDAGBuilder::visitLoad(const LoadInst &I) { DAG.getConstant(Offsets[i], PtrVT)); SDValue L = DAG.getLoad(ValueVTs[i], getCurDebugLoc(), Root, A, MachinePointerInfo(SV, Offsets[i]), isVolatile, - isNonTemporal, Alignment); + isNonTemporal, Alignment, TBAAInfo); Values[i] = L; Chains[i] = L.getValue(1); @@ -3008,6 +3010,7 @@ void SelectionDAGBuilder::visitStore(const StoreInst &I) { bool isVolatile = I.isVolatile(); bool isNonTemporal = I.getMetadata("nontemporal") != 0; unsigned Alignment = I.getAlignment(); + const MDNode *TBAAInfo = I.getMetadata(LLVMContext::MD_tbaa); for (unsigned i = 0; i != NumValues; ++i) { SDValue Add = DAG.getNode(ISD::ADD, getCurDebugLoc(), PtrVT, Ptr, @@ -3015,7 +3018,7 @@ void SelectionDAGBuilder::visitStore(const StoreInst &I) { Chains[i] = DAG.getStore(Root, getCurDebugLoc(), SDValue(Src.getNode(), Src.getResNo() + i), Add, MachinePointerInfo(PtrV, Offsets[i]), - isVolatile, isNonTemporal, Alignment); + isVolatile, isNonTemporal, Alignment, TBAAInfo); } DAG.setRoot(DAG.getNode(ISD::TokenFactor, getCurDebugLoc(), |