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Fix PR10475

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- ISD::SHL/SRL/SRA must have either both scalar or both vector operands
  but TLI.getShiftAmountTy() so far only return scalar type. As a
  result, backend logic assuming that breaks.
- Rename the original TLI.getShiftAmountTy() to
  TLI.getScalarShiftAmountTy() and re-define TLI.getShiftAmountTy() to
  return target-specificed scalar type or the same vector type as the
  1st operand.
- Fix most TICG logic assuming TLI.getShiftAmountTy() a simple scalar
  type.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176364 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Liao
2013-03-01 18:40:30 +00:00
parent b8f307b2d6
commit a6b20ced76
14 changed files with 69 additions and 23 deletions
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23
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
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@ -531,9 +531,10 @@ SDValue DAGTypeLegalizer::PromoteIntRes_SETCC(SDNode *N) {
}
SDValue DAGTypeLegalizer::PromoteIntRes_SHL(SDNode *N) {
return DAG.getNode(ISD::SHL, N->getDebugLoc(),
TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)),
GetPromotedInteger(N->getOperand(0)), N->getOperand(1));
SDValue Res = GetPromotedInteger(N->getOperand(0));
SDValue Amt = N->getOperand(1);
Amt = Amt.getValueType().isVector() ? ZExtPromotedInteger(Amt) : Amt;
return DAG.getNode(ISD::SHL, N->getDebugLoc(), Res.getValueType(), Res, Amt);
}
SDValue DAGTypeLegalizer::PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N) {
@ -555,16 +556,17 @@ SDValue DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(SDNode *N) {
SDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) {
// The input value must be properly sign extended.
SDValue Res = SExtPromotedInteger(N->getOperand(0));
return DAG.getNode(ISD::SRA, N->getDebugLoc(),
Res.getValueType(), Res, N->getOperand(1));
SDValue Amt = N->getOperand(1);
Amt = Amt.getValueType().isVector() ? ZExtPromotedInteger(Amt) : Amt;
return DAG.getNode(ISD::SRA, N->getDebugLoc(), Res.getValueType(), Res, Amt);
}
SDValue DAGTypeLegalizer::PromoteIntRes_SRL(SDNode *N) {
// The input value must be properly zero extended.
EVT VT = N->getValueType(0);
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
SDValue Res = ZExtPromotedInteger(N->getOperand(0));
return DAG.getNode(ISD::SRL, N->getDebugLoc(), NVT, Res, N->getOperand(1));
SDValue Amt = N->getOperand(1);
Amt = Amt.getValueType().isVector() ? ZExtPromotedInteger(Amt) : Amt;
return DAG.getNode(ISD::SRL, N->getDebugLoc(), Res.getValueType(), Res, Amt);
}
SDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) {
@ -2101,8 +2103,9 @@ void DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N,
// have an illegal type. Fix that first by casting the operand, otherwise
// the new SHL_PARTS operation would need further legalization.
SDValue ShiftOp = N->getOperand(1);
MVT ShiftTy = TLI.getShiftAmountTy(VT);
assert(ShiftTy.getSizeInBits() >= Log2_32_Ceil(VT.getSizeInBits()) &&
EVT ShiftTy = TLI.getShiftAmountTy(VT);
assert(ShiftTy.getScalarType().getSizeInBits() >=
Log2_32_Ceil(VT.getScalarType().getSizeInBits()) &&
"ShiftAmountTy is too small to cover the range of this type!");
if (ShiftOp.getValueType() != ShiftTy)
ShiftOp = DAG.getZExtOrTrunc(ShiftOp, dl, ShiftTy);