[Sparc] Add long double (f128) instructions to sparc backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189198 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcISelLowering.cpp b/lib/Target/Sparc/SparcISelLowering.cpp
index ce9cd94..654a03a 100644
--- a/lib/Target/Sparc/SparcISelLowering.cpp
+++ b/lib/Target/Sparc/SparcISelLowering.cpp
@@ -1257,15 +1257,21 @@
addRegisterClass(MVT::i32, &SP::IntRegsRegClass);
addRegisterClass(MVT::f32, &SP::FPRegsRegClass);
addRegisterClass(MVT::f64, &SP::DFPRegsRegClass);
+ addRegisterClass(MVT::f128, &SP::QFPRegsRegClass);
if (Subtarget->is64Bit())
addRegisterClass(MVT::i64, &SP::I64RegsRegClass);
// Turn FP extload into load/fextend
setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
+ setLoadExtAction(ISD::EXTLOAD, MVT::f64, Expand);
+
// Sparc doesn't have i1 sign extending load
setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
+
// Turn FP truncstore into trunc + store.
setTruncStoreAction(MVT::f64, MVT::f32, Expand);
+ setTruncStoreAction(MVT::f128, MVT::f32, Expand);
+ setTruncStoreAction(MVT::f128, MVT::f64, Expand);
// Custom legalize GlobalAddress nodes into LO/HI parts.
setOperationAction(ISD::GlobalAddress, getPointerTy(), Custom);
@@ -1299,9 +1305,12 @@
setOperationAction(ISD::SELECT, MVT::i32, Expand);
setOperationAction(ISD::SELECT, MVT::f32, Expand);
setOperationAction(ISD::SELECT, MVT::f64, Expand);
+ setOperationAction(ISD::SELECT, MVT::f128, Expand);
+
setOperationAction(ISD::SETCC, MVT::i32, Expand);
setOperationAction(ISD::SETCC, MVT::f32, Expand);
setOperationAction(ISD::SETCC, MVT::f64, Expand);
+ setOperationAction(ISD::SETCC, MVT::f128, Expand);
// Sparc doesn't have BRCOND either, it has BR_CC.
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
@@ -1310,10 +1319,12 @@
setOperationAction(ISD::BR_CC, MVT::i32, Custom);
setOperationAction(ISD::BR_CC, MVT::f32, Custom);
setOperationAction(ISD::BR_CC, MVT::f64, Custom);
+ setOperationAction(ISD::BR_CC, MVT::f128, Custom);
setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
+ setOperationAction(ISD::SELECT_CC, MVT::f128, Custom);
if (Subtarget->is64Bit()) {
setOperationAction(ISD::BITCAST, MVT::f64, Expand);
@@ -1334,6 +1345,11 @@
setOperationAction(ISD::FABS, MVT::f64, Custom);
}
+ setOperationAction(ISD::FSIN , MVT::f128, Expand);
+ setOperationAction(ISD::FCOS , MVT::f128, Expand);
+ setOperationAction(ISD::FSINCOS, MVT::f128, Expand);
+ setOperationAction(ISD::FREM , MVT::f128, Expand);
+ setOperationAction(ISD::FMA , MVT::f128, Expand);
setOperationAction(ISD::FSIN , MVT::f64, Expand);
setOperationAction(ISD::FCOS , MVT::f64, Expand);
setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
@@ -1352,8 +1368,10 @@
setOperationAction(ISD::ROTL , MVT::i32, Expand);
setOperationAction(ISD::ROTR , MVT::i32, Expand);
setOperationAction(ISD::BSWAP, MVT::i32, Expand);
+ setOperationAction(ISD::FCOPYSIGN, MVT::f128, Expand);
setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
+ setOperationAction(ISD::FPOW , MVT::f128, Expand);
setOperationAction(ISD::FPOW , MVT::f64, Expand);
setOperationAction(ISD::FPOW , MVT::f32, Expand);
@@ -1387,6 +1405,31 @@
if (Subtarget->isV9())
setOperationAction(ISD::CTPOP, MVT::i32, Legal);
+ if (Subtarget->isV9() && Subtarget->hasHardQuad()) {
+ setOperationAction(ISD::LOAD, MVT::f128, Legal);
+ setOperationAction(ISD::STORE, MVT::f128, Legal);
+ } else {
+ setOperationAction(ISD::LOAD, MVT::f128, Custom);
+ setOperationAction(ISD::STORE, MVT::f128, Custom);
+ }
+
+ if (Subtarget->hasHardQuad()) {
+ setOperationAction(ISD::FADD, MVT::f128, Legal);
+ setOperationAction(ISD::FSUB, MVT::f128, Legal);
+ setOperationAction(ISD::FMUL, MVT::f128, Legal);
+ setOperationAction(ISD::FDIV, MVT::f128, Legal);
+ setOperationAction(ISD::FSQRT, MVT::f128, Legal);
+ setOperationAction(ISD::FP_EXTEND, MVT::f128, Legal);
+ setOperationAction(ISD::FP_ROUND, MVT::f64, Legal);
+ if (Subtarget->isV9()) {
+ setOperationAction(ISD::FNEG, MVT::f128, Legal);
+ setOperationAction(ISD::FABS, MVT::f128, Legal);
+ } else {
+ setOperationAction(ISD::FNEG, MVT::f128, Custom);
+ setOperationAction(ISD::FABS, MVT::f128, Custom);
+ }
+ }
+
setMinFunctionAlignment(2);
computeRegisterProperties();
@@ -1800,6 +1843,94 @@
return DstReg64;
}
+// Lower a f128 load into two f64 loads.
+static SDValue LowerF128Load(SDValue Op, SelectionDAG &DAG)
+{
+ SDLoc dl(Op);
+ LoadSDNode *LdNode = dyn_cast<LoadSDNode>(Op.getNode());
+ assert(LdNode && LdNode->getOffset().getOpcode() == ISD::UNDEF
+ && "Unexpected node type");
+
+ SDValue Hi64 = DAG.getLoad(MVT::f64,
+ dl,
+ LdNode->getChain(),
+ LdNode->getBasePtr(),
+ LdNode->getPointerInfo(),
+ false, false, false, 8);
+ EVT addrVT = LdNode->getBasePtr().getValueType();
+ SDValue LoPtr = DAG.getNode(ISD::ADD, dl, addrVT,
+ LdNode->getBasePtr(),
+ DAG.getConstant(8, addrVT));
+ SDValue Lo64 = DAG.getLoad(MVT::f64,
+ dl,
+ LdNode->getChain(),
+ LoPtr,
+ LdNode->getPointerInfo(),
+ false, false, false, 8);
+
+ SDValue SubRegEven = DAG.getTargetConstant(SP::sub_even64, MVT::i32);
+ SDValue SubRegOdd = DAG.getTargetConstant(SP::sub_odd64, MVT::i32);
+
+ SDNode *InFP128 = DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
+ dl, MVT::f128);
+ InFP128 = DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl,
+ MVT::f128,
+ SDValue(InFP128, 0),
+ Hi64,
+ SubRegEven);
+ InFP128 = DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl,
+ MVT::f128,
+ SDValue(InFP128, 0),
+ Lo64,
+ SubRegOdd);
+ SDValue OutChains[2] = { SDValue(Hi64.getNode(), 1),
+ SDValue(Lo64.getNode(), 1) };
+ SDValue OutChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ &OutChains[0], 2);
+ SDValue Ops[2] = {SDValue(InFP128,0), OutChain};
+ return DAG.getMergeValues(Ops, 2, dl);
+}
+
+// Lower a f128 store into two f64 stores.
+static SDValue LowerF128Store(SDValue Op, SelectionDAG &DAG) {
+ SDLoc dl(Op);
+ StoreSDNode *StNode = dyn_cast<StoreSDNode>(Op.getNode());
+ assert(StNode && StNode->getOffset().getOpcode() == ISD::UNDEF
+ && "Unexpected node type");
+ SDValue SubRegEven = DAG.getTargetConstant(SP::sub_even64, MVT::i32);
+ SDValue SubRegOdd = DAG.getTargetConstant(SP::sub_odd64, MVT::i32);
+
+ SDNode *Hi64 = DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG,
+ dl,
+ MVT::f64,
+ StNode->getValue(),
+ SubRegEven);
+ SDNode *Lo64 = DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG,
+ dl,
+ MVT::f64,
+ StNode->getValue(),
+ SubRegOdd);
+ SDValue OutChains[2];
+ OutChains[0] = DAG.getStore(StNode->getChain(),
+ dl,
+ SDValue(Hi64, 0),
+ StNode->getBasePtr(),
+ MachinePointerInfo(),
+ false, false, 8);
+ EVT addrVT = StNode->getBasePtr().getValueType();
+ SDValue LoPtr = DAG.getNode(ISD::ADD, dl, addrVT,
+ StNode->getBasePtr(),
+ DAG.getConstant(8, addrVT));
+ OutChains[1] = DAG.getStore(StNode->getChain(),
+ dl,
+ SDValue(Lo64, 0),
+ LoPtr,
+ MachinePointerInfo(),
+ false, false, 8);
+ return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ &OutChains[0], 2);
+}
+
SDValue SparcTargetLowering::
LowerOperation(SDValue Op, SelectionDAG &DAG) const {
switch (Op.getOpcode()) {
@@ -1822,6 +1953,9 @@
case ISD::VASTART: return LowerVASTART(Op, DAG, *this);
case ISD::VAARG: return LowerVAARG(Op, DAG);
case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG);
+
+ case ISD::LOAD: return LowerF128Load(Op, DAG);
+ case ISD::STORE: return LowerF128Store(Op, DAG);
}
}