[XCore] LowerLOAD/LowerSTORE - Use allowsMemoryAccess wrapper. NFCI.

Noticed in D63075 - there was a allowsMisalignedMemoryAccesses call to check for unaligned loads and a check for aligned legal type loads - which is exactly what allowsMemoryAccess does.

llvm-svn: 363137

1 files changed, 14 insertions, 28 deletions

diff --git a/llvm/lib/Target/XCore/XCoreISelLowering.cpp b/llvm/lib/Target/XCore/XCoreISelLowering.cpp
index 51dbf016392..2145ba5a6f8 100644
--- a/llvm/lib/Target/XCore/XCoreISelLowering.cpp
+++ b/llvm/lib/Target/XCore/XCoreISelLowering.cpp
@@ -406,23 +406,16 @@ static bool isWordAligned(SDValue Value, SelectionDAG &DAG)
   return Known.countMinTrailingZeros() >= 2;
 }
 
-SDValue XCoreTargetLowering::
-LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
+SDValue XCoreTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+  LLVMContext &Context = *DAG.getContext();
   LoadSDNode *LD = cast<LoadSDNode>(Op);
   assert(LD->getExtensionType() == ISD::NON_EXTLOAD &&
          "Unexpected extension type");
   assert(LD->getMemoryVT() == MVT::i32 && "Unexpected load EVT");
-  if (allowsMisalignedMemoryAccesses(LD->getMemoryVT(),
-                                     LD->getAddressSpace(),
-                                     LD->getAlignment()))
-    return SDValue();
 
-  auto &TD = DAG.getDataLayout();
-  unsigned ABIAlignment = TD.getABITypeAlignment(
-      LD->getMemoryVT().getTypeForEVT(*DAG.getContext()));
-  // Leave aligned load alone.
-  if (LD->getAlignment() >= ABIAlignment)
+  if (allowsMemoryAccess(Context, DAG.getDataLayout(), LD->getMemoryVT(),
+                         *LD->getMemOperand()))
     return SDValue();
 
   SDValue Chain = LD->getChain();
@@ -469,7 +462,7 @@ LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
   }
 
   // Lower to a call to __misaligned_load(BasePtr).
-  Type *IntPtrTy = TD.getIntPtrType(*DAG.getContext());
+  Type *IntPtrTy = DAG.getDataLayout().getIntPtrType(Context);
   TargetLowering::ArgListTy Args;
   TargetLowering::ArgListEntry Entry;
 
@@ -489,23 +482,16 @@ LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
   return DAG.getMergeValues(Ops, DL);
 }
 
-SDValue XCoreTargetLowering::
-LowerSTORE(SDValue Op, SelectionDAG &DAG) const
-{
+SDValue XCoreTargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
+  LLVMContext &Context = *DAG.getContext();
   StoreSDNode *ST = cast<StoreSDNode>(Op);
   assert(!ST->isTruncatingStore() && "Unexpected store type");
   assert(ST->getMemoryVT() == MVT::i32 && "Unexpected store EVT");
-  if (allowsMisalignedMemoryAccesses(ST->getMemoryVT(),
-                                     ST->getAddressSpace(),
-                                     ST->getAlignment())) {
-    return SDValue();
-  }
-  unsigned ABIAlignment = DAG.getDataLayout().getABITypeAlignment(
-      ST->getMemoryVT().getTypeForEVT(*DAG.getContext()));
-  // Leave aligned store alone.
-  if (ST->getAlignment() >= ABIAlignment) {
+
+  if (allowsMemoryAccess(Context, DAG.getDataLayout(), ST->getMemoryVT(),
+                         *ST->getMemOperand()))
     return SDValue();
-  }
+
   SDValue Chain = ST->getChain();
   SDValue BasePtr = ST->getBasePtr();
   SDValue Value = ST->getValue();
@@ -514,7 +500,7 @@ LowerSTORE(SDValue Op, SelectionDAG &DAG) const
   if (ST->getAlignment() == 2) {
     SDValue Low = Value;
     SDValue High = DAG.getNode(ISD::SRL, dl, MVT::i32, Value,
-                                      DAG.getConstant(16, dl, MVT::i32));
+                               DAG.getConstant(16, dl, MVT::i32));
     SDValue StoreLow = DAG.getTruncStore(
         Chain, dl, Low, BasePtr, ST->getPointerInfo(), MVT::i16,
         /* Alignment = */ 2, ST->getMemOperand()->getFlags());
@@ -527,7 +513,7 @@ LowerSTORE(SDValue Op, SelectionDAG &DAG) const
   }
 
   // Lower to a call to __misaligned_store(BasePtr, Value).
-  Type *IntPtrTy = DAG.getDataLayout().getIntPtrType(*DAG.getContext());
+  Type *IntPtrTy = DAG.getDataLayout().getIntPtrType(Context);
   TargetLowering::ArgListTy Args;
   TargetLowering::ArgListEntry Entry;
 
@@ -540,7 +526,7 @@ LowerSTORE(SDValue Op, SelectionDAG &DAG) const
 
   TargetLowering::CallLoweringInfo CLI(DAG);
   CLI.setDebugLoc(dl).setChain(Chain).setCallee(
-      CallingConv::C, Type::getVoidTy(*DAG.getContext()),
+      CallingConv::C, Type::getVoidTy(Context),
       DAG.getExternalSymbol("__misaligned_store",
                             getPointerTy(DAG.getDataLayout())),
       std::move(Args));