diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64ISelLowering.cpp | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp index db00f8dc84a..91629d30444 100644 --- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp +++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp @@ -2711,7 +2711,8 @@ SDValue AArch64TargetLowering::LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const { EVT PtrVT = getPointerTy(); SDLoc DL(Op); - const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal(); + const GlobalAddressSDNode *GN = cast<GlobalAddressSDNode>(Op); + const GlobalValue *GV = GN->getGlobal(); unsigned char OpFlags = Subtarget->ClassifyGlobalReference(GV, getTargetMachine()); @@ -2726,6 +2727,25 @@ SDValue AArch64TargetLowering::LowerGlobalAddress(SDValue Op, return DAG.getNode(AArch64ISD::LOADgot, DL, PtrVT, GotAddr); } + if ((OpFlags & AArch64II::MO_CONSTPOOL) != 0) { + assert(getTargetMachine().getCodeModel() == CodeModel::Small && + "use of MO_CONSTPOOL only supported on small model"); + SDValue Hi = DAG.getTargetConstantPool(GV, PtrVT, 0, 0, AArch64II::MO_PAGE); + SDValue ADRP = DAG.getNode(AArch64ISD::ADRP, DL, PtrVT, Hi); + unsigned char LoFlags = AArch64II::MO_PAGEOFF | AArch64II::MO_NC; + SDValue Lo = DAG.getTargetConstantPool(GV, PtrVT, 0, 0, LoFlags); + SDValue PoolAddr = DAG.getNode(AArch64ISD::ADDlow, DL, PtrVT, ADRP, Lo); + SDValue GlobalAddr = DAG.getLoad(PtrVT, DL, DAG.getEntryNode(), PoolAddr, + MachinePointerInfo::getConstantPool(), + /*isVolatile=*/ false, + /*isNonTemporal=*/ true, + /*isInvariant=*/ true, 8); + if (GN->getOffset() != 0) + return DAG.getNode(ISD::ADD, DL, PtrVT, GlobalAddr, + DAG.getConstant(GN->getOffset(), PtrVT)); + return GlobalAddr; + } + if (getTargetMachine().getCodeModel() == CodeModel::Large) { const unsigned char MO_NC = AArch64II::MO_NC; return DAG.getNode( |
