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Add target flags to SPARC address operands.

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SDNodes and MachineOperands get target flags representing the %hi() and
%lo() assembly annotations that eventually become relocations.

Also define flags to be used by the 64-bit code models.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179468 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2013-04-14 01:33:32 +00:00
parent 63496f66c5
commit 0ec587e26c
3 changed files with 95 additions and 14 deletions
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44
lib/Target/Sparc/SparcISelLowering.cpp
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@@ -15,6 +15,7 @@
#include "SparcISelLowering.h"
#include "SparcMachineFunctionInfo.h"
#include "SparcTargetMachine.h"
#include "MCTargetDesc/SparcBaseInfo.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
@@ -1354,24 +1355,39 @@ static void LookThroughSetCC(SDValue &LHS, SDValue &RHS,
}
}
// Convert to a target node and set target flags.
SDValue SparcTargetLowering::withTargetFlags(SDValue Op, unsigned TF,
SelectionDAG &DAG) const {
if (const GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op))
return DAG.getTargetGlobalAddress(GA->getGlobal(),
GA->getDebugLoc(),
GA->getValueType(0),
GA->getOffset(), TF);
llvm_unreachable("Unhandled address SDNode");
}
// Split Op into high and low parts according to HiTF and LoTF.
// Return an ADD node combining the parts.
SDValue SparcTargetLowering::makeHiLoPair(SDValue Op,
unsigned HiTF, unsigned LoTF,
SelectionDAG &DAG) const {
DebugLoc DL = Op.getDebugLoc();
EVT VT = Op.getValueType();
SDValue Hi = DAG.getNode(SPISD::Hi, DL, VT, withTargetFlags(Op, HiTF, DAG));
SDValue Lo = DAG.getNode(SPISD::Lo, DL, VT, withTargetFlags(Op, LoTF, DAG));
return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
}
SDValue SparcTargetLowering::LowerGlobalAddress(SDValue Op,
SelectionDAG &DAG) const {
const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
// FIXME there isn't really any debug info here
DebugLoc dl = Op.getDebugLoc();
SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32);
SDValue Hi = DAG.getNode(SPISD::Hi, dl, MVT::i32, GA);
SDValue Lo = DAG.getNode(SPISD::Lo, dl, MVT::i32, GA);
SDValue HiLo = makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
return DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
return HiLo;
SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, dl,
getPointerTy());
SDValue RelAddr = DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
SDValue AbsAddr = DAG.getNode(ISD::ADD, dl, MVT::i32,
GlobalBase, RelAddr);
return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
DebugLoc DL = Op.getDebugLoc();
SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, getPointerTy());
SDValue AbsAddr = DAG.getNode(ISD::ADD, DL, getPointerTy(), GlobalBase, HiLo);
return DAG.getLoad(getPointerTy(), DL, DAG.getEntryNode(),
AbsAddr, MachinePointerInfo(), false, false, false, 0);
}