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Support PIC loading of constant pool entries

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89863 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
2009-11-25 12:17:58 +00:00
parent 5b512fe527
commit d71cebf575
3 changed files with 21 additions and 14 deletions
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16
lib/Target/Mips/MipsISelLowering.cpp
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@ -563,8 +563,6 @@ LowerConstantPool(SDValue Op, SelectionDAG &DAG)
SDValue ResNode;
ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op);
Constant *C = N->getConstVal();
SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
N->getOffset(), MipsII::MO_ABS_HILO);
// FIXME there isn't actually debug info here
DebugLoc dl = Op.getDebugLoc();
@ -577,11 +575,21 @@ LowerConstantPool(SDValue Op, SelectionDAG &DAG)
// SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, MVT::i32, CP);
// SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32);
// ResNode = DAG.getNode(ISD::ADD, MVT::i32, GOT, GPRelNode);
//} else { // %hi/%lo relocation
if (getTargetMachine().getRelocationModel() != Reloc::PIC_) {
SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
N->getOffset(), MipsII::MO_ABS_HILO);
SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, MVT::i32, CP);
SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CP);
ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo);
//}
} else {
SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
N->getOffset(), MipsII::MO_GOT);
SDValue Load = DAG.getLoad(MVT::i32, dl, DAG.getEntryNode(),
CP, NULL, 0);
SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CP);
ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, Load, Lo);
}
return ResNode;
}