6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-13 04:38:24 +00:00
Code Issues Projects Releases Wiki Activity

Make CodeGen TBAA-aware.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116890 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-10-20 00:31:05 +00:00
parent 8b95c3ebfb
commit f96e4bd2a3
10 changed files with 92 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
View File

@ -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(),