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-rw-r--r--lib/CodeGen/AtomicExpandLoadLinkedPass.cpp53
-rw-r--r--lib/CodeGen/SelectionDAG/LegalizeDAG.cpp37
-rw-r--r--lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp79
-rw-r--r--lib/CodeGen/SelectionDAG/LegalizeTypes.h2
-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAG.cpp53
-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp24
-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp1
-rw-r--r--lib/CodeGen/TargetLoweringBase.cpp4
8 files changed, 163 insertions, 90 deletions
diff --git a/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp b/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
index fbb6e9662d..6f93ced85b 100644
--- a/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
+++ b/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
@@ -299,41 +299,44 @@ bool AtomicExpandLoadLinked::expandAtomicCmpXchg(AtomicCmpXchgInst *CI) {
// Setup the builder so we can create any PHIs we need.
Builder.SetInsertPoint(FailureBB, FailureBB->begin());
BasicBlock *SuccessBB = FailureOrder == Monotonic ? BarrierBB : TryStoreBB;
- PHINode *Success = nullptr, *Failure = nullptr;
+ PHINode *Success = Builder.CreatePHI(Type::getInt1Ty(Ctx), 2);
+ Success->addIncoming(ConstantInt::getTrue(Ctx), SuccessBB);
+ Success->addIncoming(ConstantInt::getFalse(Ctx), LoopBB);
// Look for any users of the cmpxchg that are just comparing the loaded value
// against the desired one, and replace them with the CFG-derived version.
+ SmallVector<ExtractValueInst *, 2> PrunedInsts;
for (auto User : CI->users()) {
- ICmpInst *ICmp = dyn_cast<ICmpInst>(User);
- if (!ICmp)
+ ExtractValueInst *EV = dyn_cast<ExtractValueInst>(User);
+ if (!EV)
continue;
- // Because we know ICmp uses CI, we only need one operand to be the old
- // value.
- if (ICmp->getOperand(0) != CI->getCompareOperand() &&
- ICmp->getOperand(1) != CI->getCompareOperand())
- continue;
+ assert(EV->getNumIndices() == 1 && EV->getIndices()[0] <= 1 &&
+ "weird extraction from { iN, i1 }");
- if (ICmp->getPredicate() == CmpInst::ICMP_EQ) {
- if (!Success) {
- Success = Builder.CreatePHI(Type::getInt1Ty(Ctx), 2);
- Success->addIncoming(ConstantInt::getTrue(Ctx), SuccessBB);
- Success->addIncoming(ConstantInt::getFalse(Ctx), LoopBB);
- }
- ICmp->replaceAllUsesWith(Success);
- } else if (ICmp->getPredicate() == CmpInst::ICMP_NE) {
- if (!Failure) {
- Failure = Builder.CreatePHI(Type::getInt1Ty(Ctx), 2);
- Failure->addIncoming(ConstantInt::getFalse(Ctx), SuccessBB);
- Failure->addIncoming(ConstantInt::getTrue(Ctx), LoopBB);
- }
- ICmp->replaceAllUsesWith(Failure);
- }
+ if (EV->getIndices()[0] == 0)
+ EV->replaceAllUsesWith(Loaded);
+ else
+ EV->replaceAllUsesWith(Success);
+
+ PrunedInsts.push_back(EV);
}
- CI->replaceAllUsesWith(Loaded);
- CI->eraseFromParent();
+ // We can remove the instructions now we're no longer iterating through them.
+ for (auto EV : PrunedInsts)
+ EV->eraseFromParent();
+ if (!CI->use_empty()) {
+ // Some use of the full struct return that we don't understand has happened,
+ // so we've got to reconstruct it properly.
+ Value *Res;
+ Res = Builder.CreateInsertValue(UndefValue::get(CI->getType()), Loaded, 0);
+ Res = Builder.CreateInsertValue(Res, Success, 1);
+
+ CI->replaceAllUsesWith(Res);
+ }
+
+ CI->eraseFromParent();
return true;
}
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index bf7541bf28..c76a52abe6 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3007,14 +3007,14 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) {
case ISD::ATOMIC_LOAD: {
// There is no libcall for atomic load; fake it with ATOMIC_CMP_SWAP.
SDValue Zero = DAG.getConstant(0, Node->getValueType(0));
- SDValue Swap = DAG.getAtomic(ISD::ATOMIC_CMP_SWAP, dl,
- cast<AtomicSDNode>(Node)->getMemoryVT(),
- Node->getOperand(0),
- Node->getOperand(1), Zero, Zero,
- cast<AtomicSDNode>(Node)->getMemOperand(),
- cast<AtomicSDNode>(Node)->getOrdering(),
- cast<AtomicSDNode>(Node)->getOrdering(),
- cast<AtomicSDNode>(Node)->getSynchScope());
+ SDVTList VTs = DAG.getVTList(Node->getValueType(0), MVT::Other);
+ SDValue Swap = DAG.getAtomicCmpSwap(
+ ISD::ATOMIC_CMP_SWAP, dl, cast<AtomicSDNode>(Node)->getMemoryVT(), VTs,
+ Node->getOperand(0), Node->getOperand(1), Zero, Zero,
+ cast<AtomicSDNode>(Node)->getMemOperand(),
+ cast<AtomicSDNode>(Node)->getOrdering(),
+ cast<AtomicSDNode>(Node)->getOrdering(),
+ cast<AtomicSDNode>(Node)->getSynchScope());
Results.push_back(Swap.getValue(0));
Results.push_back(Swap.getValue(1));
break;
@@ -3051,6 +3051,27 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) {
Results.push_back(Tmp.second);
break;
}
+ case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS: {
+ // Expanding an ATOMIC_CMP_SWAP_WITH_SUCCESS produces an ATOMIC_CMP_SWAP and
+ // splits out the success value as a comparison. Expanding the resulting
+ // ATOMIC_CMP_SWAP will produce a libcall.
+ SDVTList VTs = DAG.getVTList(Node->getValueType(0), MVT::Other);
+ SDValue Res = DAG.getAtomicCmpSwap(
+ ISD::ATOMIC_CMP_SWAP, dl, cast<AtomicSDNode>(Node)->getMemoryVT(), VTs,
+ Node->getOperand(0), Node->getOperand(1), Node->getOperand(2),
+ Node->getOperand(3), cast<MemSDNode>(Node)->getMemOperand(),
+ cast<AtomicSDNode>(Node)->getSuccessOrdering(),
+ cast<AtomicSDNode>(Node)->getFailureOrdering(),
+ cast<AtomicSDNode>(Node)->getSynchScope());
+
+ SDValue Success = DAG.getSetCC(SDLoc(Node), Node->getValueType(1),
+ Res, Node->getOperand(2), ISD::SETEQ);
+
+ Results.push_back(Res.getValue(0));
+ Results.push_back(Success);
+ Results.push_back(Res.getValue(1));
+ break;
+ }
case ISD::DYNAMIC_STACKALLOC:
ExpandDYNAMIC_STACKALLOC(Node, Results);
break;
diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
index 2483184dee..a8603423e3 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -138,7 +138,9 @@ void DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) {
Res = PromoteIntRes_Atomic1(cast<AtomicSDNode>(N)); break;
case ISD::ATOMIC_CMP_SWAP:
- Res = PromoteIntRes_Atomic2(cast<AtomicSDNode>(N)); break;
+ case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS:
+ Res = PromoteIntRes_AtomicCmpSwap(cast<AtomicSDNode>(N), ResNo);
+ break;
}
// If the result is null then the sub-method took care of registering it.
@@ -192,16 +194,41 @@ SDValue DAGTypeLegalizer::PromoteIntRes_Atomic1(AtomicSDNode *N) {
return Res;
}
-SDValue DAGTypeLegalizer::PromoteIntRes_Atomic2(AtomicSDNode *N) {
+SDValue DAGTypeLegalizer::PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N,
+ unsigned ResNo) {
+ if (ResNo == 1) {
+ assert(N->getOpcode() == ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS);
+ EVT SVT = getSetCCResultType(N->getOperand(2).getValueType());
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(1));
+
+ // Only use the result of getSetCCResultType if it is legal,
+ // otherwise just use the promoted result type (NVT).
+ if (!TLI.isTypeLegal(SVT))
+ SVT = NVT;
+
+ SDVTList VTs = DAG.getVTList(N->getValueType(0), SVT, MVT::Other);
+ SDValue Res = DAG.getAtomicCmpSwap(
+ ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS, SDLoc(N), N->getMemoryVT(), VTs,
+ N->getChain(), N->getBasePtr(), N->getOperand(2), N->getOperand(3),
+ N->getMemOperand(), N->getSuccessOrdering(), N->getFailureOrdering(),
+ N->getSynchScope());
+ ReplaceValueWith(SDValue(N, 0), Res.getValue(0));
+ ReplaceValueWith(SDValue(N, 2), Res.getValue(2));
+ return Res.getValue(1);
+ }
+
SDValue Op2 = GetPromotedInteger(N->getOperand(2));
SDValue Op3 = GetPromotedInteger(N->getOperand(3));
- SDValue Res = DAG.getAtomic(N->getOpcode(), SDLoc(N), N->getMemoryVT(),
- N->getChain(), N->getBasePtr(), Op2, Op3,
- N->getMemOperand(), N->getSuccessOrdering(),
- N->getFailureOrdering(), N->getSynchScope());
+ SDVTList VTs =
+ DAG.getVTList(Op2.getValueType(), N->getValueType(1), MVT::Other);
+ SDValue Res = DAG.getAtomicCmpSwap(
+ N->getOpcode(), SDLoc(N), N->getMemoryVT(), VTs, N->getChain(),
+ N->getBasePtr(), Op2, Op3, N->getMemOperand(), N->getSuccessOrdering(),
+ N->getFailureOrdering(), N->getSynchScope());
// Legalized the chain result - switch anything that used the old chain to
// use the new one.
- ReplaceValueWith(SDValue(N, 1), Res.getValue(1));
+ unsigned ChainOp = N->getNumValues() - 1;
+ ReplaceValueWith(SDValue(N, ChainOp), Res.getValue(ChainOp));
return Res;
}
@@ -1143,6 +1170,26 @@ void DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) {
ReplaceValueWith(SDValue(N, 1), Tmp.second);
break;
}
+ case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS: {
+ AtomicSDNode *AN = cast<AtomicSDNode>(N);
+ SDVTList VTs = DAG.getVTList(N->getValueType(0), MVT::Other);
+ SDValue Tmp = DAG.getAtomicCmpSwap(
+ ISD::ATOMIC_CMP_SWAP, SDLoc(N), AN->getMemoryVT(), VTs,
+ N->getOperand(0), N->getOperand(1), N->getOperand(2), N->getOperand(3),
+ AN->getMemOperand(), AN->getSuccessOrdering(), AN->getFailureOrdering(),
+ AN->getSynchScope());
+
+ // Expanding to the strong ATOMIC_CMP_SWAP node means we can determine
+ // success simply by comparing the loaded value against the ingoing
+ // comparison.
+ SDValue Success = DAG.getSetCC(SDLoc(N), N->getValueType(1), Tmp,
+ N->getOperand(2), ISD::SETEQ);
+
+ SplitInteger(Tmp, Lo, Hi);
+ ReplaceValueWith(SDValue(N, 1), Success);
+ ReplaceValueWith(SDValue(N, 2), Tmp.getValue(1));
+ break;
+ }
case ISD::AND:
case ISD::OR:
@@ -2388,16 +2435,18 @@ void DAGTypeLegalizer::ExpandIntRes_ATOMIC_LOAD(SDNode *N,
SDValue &Lo, SDValue &Hi) {
SDLoc dl(N);
EVT VT = cast<AtomicSDNode>(N)->getMemoryVT();
+ SDVTList VTs = DAG.getVTList(VT, MVT::i1, MVT::Other);
SDValue Zero = DAG.getConstant(0, VT);
- SDValue Swap = DAG.getAtomic(ISD::ATOMIC_CMP_SWAP, dl, VT,
- N->getOperand(0),
- N->getOperand(1), Zero, Zero,
- cast<AtomicSDNode>(N)->getMemOperand(),
- cast<AtomicSDNode>(N)->getOrdering(),
- cast<AtomicSDNode>(N)->getOrdering(),
- cast<AtomicSDNode>(N)->getSynchScope());
+ SDValue Swap = DAG.getAtomicCmpSwap(
+ ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS, dl,
+ cast<AtomicSDNode>(N)->getMemoryVT(), VTs, N->getOperand(0),
+ N->getOperand(1), Zero, Zero, cast<AtomicSDNode>(N)->getMemOperand(),
+ cast<AtomicSDNode>(N)->getOrdering(),
+ cast<AtomicSDNode>(N)->getOrdering(),
+ cast<AtomicSDNode>(N)->getSynchScope());
+
ReplaceValueWith(SDValue(N, 0), Swap.getValue(0));
- ReplaceValueWith(SDValue(N, 1), Swap.getValue(1));
+ ReplaceValueWith(SDValue(N, 1), Swap.getValue(2));
}
//===----------------------------------------------------------------------===//
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index e4bbc78fa7..04c200c952 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -220,7 +220,7 @@ private:
SDValue PromoteIntRes_AssertZext(SDNode *N);
SDValue PromoteIntRes_Atomic0(AtomicSDNode *N);
SDValue PromoteIntRes_Atomic1(AtomicSDNode *N);
- SDValue PromoteIntRes_Atomic2(AtomicSDNode *N);
+ SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo);
SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N);
SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N);
SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N);
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 010431e532..639eb462e7 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -502,6 +502,7 @@ static void AddNodeIDCustom(FoldingSetNodeID &ID, const SDNode *N) {
break;
}
case ISD::ATOMIC_CMP_SWAP:
+ case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS:
case ISD::ATOMIC_SWAP:
case ISD::ATOMIC_LOAD_ADD:
case ISD::ATOMIC_LOAD_SUB:
@@ -4327,51 +4328,47 @@ SDValue SelectionDAG::getAtomic(unsigned Opcode, SDLoc dl, EVT MemVT,
Ordering, SynchScope);
}
-SDValue SelectionDAG::getAtomic(unsigned Opcode, SDLoc dl, EVT MemVT,
- SDValue Chain, SDValue Ptr, SDValue Cmp,
- SDValue Swp, MachinePointerInfo PtrInfo,
- unsigned Alignment,
- AtomicOrdering SuccessOrdering,
- AtomicOrdering FailureOrdering,
- SynchronizationScope SynchScope) {
+SDValue SelectionDAG::getAtomicCmpSwap(
+ unsigned Opcode, SDLoc dl, EVT MemVT, SDVTList VTs, SDValue Chain,
+ SDValue Ptr, SDValue Cmp, SDValue Swp, MachinePointerInfo PtrInfo,
+ unsigned Alignment, AtomicOrdering SuccessOrdering,
+ AtomicOrdering FailureOrdering, SynchronizationScope SynchScope) {
+ assert(Opcode == ISD::ATOMIC_CMP_SWAP ||
+ Opcode == ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS);
+ assert(Cmp.getValueType() == Swp.getValueType() && "Invalid Atomic Op Types");
+
if (Alignment == 0) // Ensure that codegen never sees alignment 0
Alignment = getEVTAlignment(MemVT);
MachineFunction &MF = getMachineFunction();
- // All atomics are load and store, except for ATMOIC_LOAD and ATOMIC_STORE.
- // For now, atomics are considered to be volatile always.
// FIXME: Volatile isn't really correct; we should keep track of atomic
// orderings in the memoperand.
unsigned Flags = MachineMemOperand::MOVolatile;
- if (Opcode != ISD::ATOMIC_STORE)
- Flags |= MachineMemOperand::MOLoad;
- if (Opcode != ISD::ATOMIC_LOAD)
- Flags |= MachineMemOperand::MOStore;
+ Flags |= MachineMemOperand::MOLoad;
+ Flags |= MachineMemOperand::MOStore;
MachineMemOperand *MMO =
MF.getMachineMemOperand(PtrInfo, Flags, MemVT.getStoreSize(), Alignment);
- return getAtomic(Opcode, dl, MemVT, Chain, Ptr, Cmp, Swp, MMO,
- SuccessOrdering, FailureOrdering, SynchScope);
+ return getAtomicCmpSwap(Opcode, dl, MemVT, VTs, Chain, Ptr, Cmp, Swp, MMO,
+ SuccessOrdering, FailureOrdering, SynchScope);
}
-SDValue SelectionDAG::getAtomic(unsigned Opcode, SDLoc dl, EVT MemVT,
- SDValue Chain,
- SDValue Ptr, SDValue Cmp,
- SDValue Swp, MachineMemOperand *MMO,
- AtomicOrdering SuccessOrdering,
- AtomicOrdering FailureOrdering,
- SynchronizationScope SynchScope) {
- assert(Opcode == ISD::ATOMIC_CMP_SWAP && "Invalid Atomic Op");
+SDValue SelectionDAG::getAtomicCmpSwap(unsigned Opcode, SDLoc dl, EVT MemVT,
+ SDVTList VTs, SDValue Chain, SDValue Ptr,
+ SDValue Cmp, SDValue Swp,
+ MachineMemOperand *MMO,
+ AtomicOrdering SuccessOrdering,
+ AtomicOrdering FailureOrdering,
+ SynchronizationScope SynchScope) {
+ assert(Opcode == ISD::ATOMIC_CMP_SWAP ||
+ Opcode == ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS);
assert(Cmp.getValueType() == Swp.getValueType() && "Invalid Atomic Op Types");
- EVT VT = Cmp.getValueType();
-
- SDVTList VTs = getVTList(VT, MVT::Other);
SDValue Ops[] = {Chain, Ptr, Cmp, Swp};
- return getAtomic(Opcode, dl, MemVT, VTs, Ops, MMO, SuccessOrdering,
- FailureOrdering, SynchScope);
+ return getAtomic(Opcode, dl, MemVT, VTs, Ops, MMO,
+ SuccessOrdering, FailureOrdering, SynchScope);
}
SDValue SelectionDAG::getAtomic(unsigned Opcode, SDLoc dl, EVT MemVT,
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 92a3670e83..136baf56e8 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -3629,19 +3629,17 @@ void SelectionDAGBuilder::visitAtomicCmpXchg(const AtomicCmpXchgInst &I) {
InChain = InsertFenceForAtomic(InChain, SuccessOrder, Scope, true, dl,
DAG, *TLI);
- SDValue L =
- DAG.getAtomic(ISD::ATOMIC_CMP_SWAP, dl,
- getValue(I.getCompareOperand()).getSimpleValueType(),
- InChain,
- getValue(I.getPointerOperand()),
- getValue(I.getCompareOperand()),
- getValue(I.getNewValOperand()),
- MachinePointerInfo(I.getPointerOperand()), 0 /* Alignment */,
- TLI->getInsertFencesForAtomic() ? Monotonic : SuccessOrder,
- TLI->getInsertFencesForAtomic() ? Monotonic : FailureOrder,
- Scope);
-
- SDValue OutChain = L.getValue(1);
+ MVT MemVT = getValue(I.getCompareOperand()).getSimpleValueType();
+ SDVTList VTs = DAG.getVTList(MemVT, MVT::i1, MVT::Other);
+ SDValue L = DAG.getAtomicCmpSwap(
+ ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS, dl, MemVT, VTs, InChain,
+ getValue(I.getPointerOperand()), getValue(I.getCompareOperand()),
+ getValue(I.getNewValOperand()), MachinePointerInfo(I.getPointerOperand()),
+ 0 /* Alignment */,
+ TLI->getInsertFencesForAtomic() ? Monotonic : SuccessOrder,
+ TLI->getInsertFencesForAtomic() ? Monotonic : FailureOrder, Scope);
+
+ SDValue OutChain = L.getValue(2);
if (TLI->getInsertFencesForAtomic())
OutChain = InsertFenceForAtomic(OutChain, SuccessOrder, Scope, false, dl,
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
index d6b525500a..c92fb2453c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -55,6 +55,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
case ISD::PREFETCH: return "Prefetch";
case ISD::ATOMIC_FENCE: return "AtomicFence";
case ISD::ATOMIC_CMP_SWAP: return "AtomicCmpSwap";
+ case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS: return "AtomicCmpSwapWithSuccess";
case ISD::ATOMIC_SWAP: return "AtomicSwap";
case ISD::ATOMIC_LOAD_ADD: return "AtomicLoadAdd";
case ISD::ATOMIC_LOAD_SUB: return "AtomicLoadSub";
diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp
index 906ded4810..f530485543 100644
--- a/lib/CodeGen/TargetLoweringBase.cpp
+++ b/lib/CodeGen/TargetLoweringBase.cpp
@@ -730,6 +730,10 @@ void TargetLoweringBase::initActions() {
setIndexedStoreAction(IM, (MVT::SimpleValueType)VT, Expand);
}
+ // Most backends expect to see the node which just returns the value loaded.
+ setOperationAction(ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS,
+ (MVT::SimpleValueType)VT, Expand);
+
// These operations default to expand.
setOperationAction(ISD::FGETSIGN, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::CONCAT_VECTORS, (MVT::SimpleValueType)VT, Expand);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 16:13:10 +0000