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llvm-svn: 43923
This commit is contained in:
Evan Cheng 2007-11-09 01:28:33 +00:00
parent 7e1d8b99ab
commit 781ed42681
2 changed files with 11 additions and 14 deletions
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18
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -1599,17 +1599,21 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case 8: LD = DAG.getLoad(MVT::i64, Chain, Addr, NULL, 0); break;
}
Addr = LD;
if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) {
// For PIC, the sequence is:
// BRIND(load(Jumptable + index) + RelocBase)
// RelocBase can be JumpTable, GOT or some sort of global base.
if (PTy != MVT::i32)
Addr = DAG.getNode(ISD::SIGN_EXTEND, PTy, Addr);
Addr = DAG.getNode(ISD::ADD, PTy, Addr,
TLI.getPICJumpTableRelocBase(Table, DAG));
}
// RelocBase is the JumpTable on PPC and X86, GOT on Alpha
SDOperand Reloc;
if (TLI.usesGlobalOffsetTable())
Reloc = DAG.getNode(ISD::GLOBAL_OFFSET_TABLE, PTy);
else
Reloc = Table;
Addr = (PTy != MVT::i32) ? DAG.getNode(ISD::SIGN_EXTEND, PTy, LD) : LD;
Addr = DAG.getNode(ISD::ADD, PTy, Addr, Reloc);
Result = DAG.getNode(ISD::BRIND, MVT::Other, LD.getValue(1), Addr);
} else {
Result = DAG.getNode(ISD::BRIND, MVT::Other, LD.getValue(1), LD);
}
}
}
break;

7
lib/CodeGen/SelectionDAG/TargetLowering.cpp
View File

@ -393,13 +393,6 @@ unsigned TargetLowering::getVectorTypeBreakdown(MVT::ValueType VT,
return 1;
}
SDOperand TargetLowering::getPICJumpTableRelocBase(SDOperand Table,
SelectionDAG &DAG) const {
if (usesGlobalOffsetTable())
return DAG.getNode(ISD::GLOBAL_OFFSET_TABLE, getPointerTy());
return Table;
}
//===----------------------------------------------------------------------===//
// Optimization Methods
//===----------------------------------------------------------------------===//