#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-namespace {
-class TargetLoweringObjectFileAlpha : public TargetLoweringObjectFile {
-public:
- void Initialize(MCContext &Ctx, const TargetMachine &TM) {
- TargetLoweringObjectFile::Initialize(Ctx, TM);
- TextSection = getOrCreateSection(".text", true,
- SectionKind::getText());
- DataSection = getOrCreateSection(".data", true,
- SectionKind::getDataRel());
- ReadOnlySection = getOrCreateSection(".rodata", true,
- SectionKind::getReadOnly());
- }
-};
-}
-
-
-
/// AddLiveIn - This helper function adds the specified physical register to the
/// MachineFunction as a live in value. It also creates a corresponding virtual
/// register for it.
}
AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM)
- : TargetLowering(TM, new TargetLoweringObjectFileAlpha()) {
+ : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
// Set up the TargetLowering object.
//I am having problems with shr n i8 1
setShiftAmountType(MVT::i64);
setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
+ setOperationAction(ISD::SRL_PARTS, MVT::i64, Custom);
+ setOperationAction(ISD::SRA_PARTS, MVT::i64, Expand);
+ setOperationAction(ISD::SHL_PARTS, MVT::i64, Expand);
// We don't support sin/cos/sqrt/pow
setOperationAction(ISD::FSIN , MVT::f64, Expand);
}
}
+ case ISD::SRL_PARTS: {
+ SDValue ShOpLo = Op.getOperand(0);
+ SDValue ShOpHi = Op.getOperand(1);
+ SDValue ShAmt = Op.getOperand(2);
+ SDValue bm = DAG.getNode(ISD::SUB, dl, MVT::i64,
+ DAG.getConstant(64, MVT::i64), ShAmt);
+ SDValue BMCC = DAG.getSetCC(dl, MVT::i64, bm,
+ DAG.getConstant(0, MVT::i64), ISD::SETLE);
+ // if 64 - shAmt <= 0
+ SDValue Hi_Neg = DAG.getConstant(0, MVT::i64);
+ SDValue ShAmt_Neg = DAG.getNode(ISD::SUB, dl, MVT::i64,
+ DAG.getConstant(0, MVT::i64), bm);
+ SDValue Lo_Neg = DAG.getNode(ISD::SRL, dl, MVT::i64, ShOpHi, ShAmt_Neg);
+ // else
+ SDValue carries = DAG.getNode(ISD::SHL, dl, MVT::i64, ShOpHi, bm);
+ SDValue Hi_Pos = DAG.getNode(ISD::SRL, dl, MVT::i64, ShOpHi, ShAmt);
+ SDValue Lo_Pos = DAG.getNode(ISD::SRL, dl, MVT::i64, ShOpLo, ShAmt);
+ Lo_Pos = DAG.getNode(ISD::OR, dl, MVT::i64, Lo_Pos, carries);
+ // Merge
+ SDValue Hi = DAG.getNode(ISD::SELECT, dl, MVT::i64, BMCC, Hi_Neg, Hi_Pos);
+ SDValue Lo = DAG.getNode(ISD::SELECT, dl, MVT::i64, BMCC, Lo_Neg, Lo_Pos);
+ SDValue Ops[2] = { Lo, Hi };
+ return DAG.getMergeValues(Ops, 2, dl);
+ }
+ // case ISD::SRA_PARTS:
+
+ // case ISD::SHL_PARTS:
+
+
case ISD::SINT_TO_FP: {
assert(Op.getOperand(0).getValueType() == MVT::i64 &&
"Unhandled SINT_TO_FP type in custom expander!");