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Fix order of operands for crc8_l4r

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The order in which operands appear in the encoded instruction is different
to order in which they appear in assembly. This changes the XCore backend to
use the instruction encoding order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173493 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Osborne
2013-01-25 21:20:28 +00:00
parent a965baca3c
commit 0f1bcedf5a
4 changed files with 48 additions and 27 deletions
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9
lib/Target/XCore/XCoreISelDAGToDAG.cpp
View File

@@ -211,16 +211,11 @@ SDNode *XCoreDAGToDAGISel::Select(SDNode *N) {
return CurDAG->getMachineNode(XCore::LMUL_l6r, dl, MVT::i32, MVT::i32,
Ops, 4);
}
case ISD::INTRINSIC_WO_CHAIN: {
unsigned IntNo = cast<ConstantSDNode>(N->getOperand(0))->getZExtValue();
switch (IntNo) {
case Intrinsic::xcore_crc8:
SDValue Ops[] = { N->getOperand(1), N->getOperand(2), N->getOperand(3) };
case XCoreISD::CRC8: {
SDValue Ops[] = { N->getOperand(0), N->getOperand(1), N->getOperand(2) };
return CurDAG->getMachineNode(XCore::CRC8_l4r, dl, MVT::i32, MVT::i32,
Ops, 3);
}
break;
}
case ISD::BRIND:
if (SDNode *ResNode = SelectBRIND(N))
return ResNode;

22
lib/Target/XCore/XCoreISelLowering.cpp
View File

@@ -54,6 +54,7 @@ getTargetNodeName(unsigned Opcode) const
case XCoreISD::LMUL : return "XCoreISD::LMUL";
case XCoreISD::MACCU : return "XCoreISD::MACCU";
case XCoreISD::MACCS : return "XCoreISD::MACCS";
case XCoreISD::CRC8 : return "XCoreISD::CRC8";
case XCoreISD::BR_JT : return "XCoreISD::BR_JT";
case XCoreISD::BR_JT32 : return "XCoreISD::BR_JT32";
default : return NULL;
@@ -152,6 +153,9 @@ XCoreTargetLowering::XCoreTargetLowering(XCoreTargetMachine &XTM)
setOperationAction(ISD::INIT_TRAMPOLINE, MVT::Other, Custom);
setOperationAction(ISD::ADJUST_TRAMPOLINE, MVT::Other, Custom);
// We want to custom lower some of our intrinsics.
setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
maxStoresPerMemset = maxStoresPerMemsetOptSize = 4;
maxStoresPerMemmove = maxStoresPerMemmoveOptSize
= maxStoresPerMemcpy = maxStoresPerMemcpyOptSize = 2;
@@ -185,6 +189,7 @@ LowerOperation(SDValue Op, SelectionDAG &DAG) const {
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
case ISD::INIT_TRAMPOLINE: return LowerINIT_TRAMPOLINE(Op, DAG);
case ISD::ADJUST_TRAMPOLINE: return LowerADJUST_TRAMPOLINE(Op, DAG);
case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
default:
llvm_unreachable("unimplemented operand");
}
@@ -858,6 +863,23 @@ LowerINIT_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const {
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, OutChains, 5);
}
SDValue XCoreTargetLowering::
LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const {
DebugLoc DL = Op.getDebugLoc();
unsigned IntNo = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
switch (IntNo) {
case Intrinsic::xcore_crc8:
EVT VT = Op.getValueType();
SDValue Data =
DAG.getNode(XCoreISD::CRC8, DL, DAG.getVTList(VT, VT),
Op.getOperand(1), Op.getOperand(2) , Op.getOperand(3));
SDValue Crc(Data.getNode(), 1);
SDValue Results[] = { Crc, Data };
return DAG.getMergeValues(Results, 2, DL);
}
return SDValue();
}
//===----------------------------------------------------------------------===//
// Calling Convention Implementation
//===----------------------------------------------------------------------===//

4
lib/Target/XCore/XCoreISelLowering.h
View File

@@ -63,6 +63,9 @@ namespace llvm {
// Corresponds to MACCS instruction
MACCS,
// Corresponds to CRC8 instruction
CRC8,
// Jumptable branch.
BR_JT,
@@ -147,6 +150,7 @@ namespace llvm {
SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerINIT_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const;
// Inline asm support
std::pair<unsigned, const TargetRegisterClass*>

4
lib/Target/XCore/XCoreInstrInfo.td
View File

@@ -477,10 +477,10 @@ def MACCS_l4r : _L4R<(outs GRRegs:$dst1, GRRegs:$dst2),
[]>;
}
let Constraints = "$src1 = $dst1" in
let Constraints = "$src1 = $dst2" in
def CRC8_l4r : _L4R<(outs GRRegs:$dst1, GRRegs:$dst2),
(ins GRRegs:$src1, GRRegs:$src2, GRRegs:$src3),
"crc8 $dst1, $dst2, $src2, $src3",
"crc8 $dst2, $dst1, $src2, $src3",
[]>;
// Five operand long