aboutsummaryrefslogtreecommitdiffstats
path: root/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp')
-rw-r--r--lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp125
1 files changed, 109 insertions, 16 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
index 6b8fec6..4591e79 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -68,6 +68,8 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
case ISD::EXTRACT_VECTOR_ELT:
R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break;
case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
+ case ISD::FMINNUM: R = SoftenFloatRes_FMINNUM(N); break;
+ case ISD::FMAXNUM: R = SoftenFloatRes_FMAXNUM(N); break;
case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
@@ -85,7 +87,7 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
case ISD::FNEG: R = SoftenFloatRes_FNEG(N); break;
case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
- case ISD::FP16_TO_FP32:R = SoftenFloatRes_FP16_TO_FP32(N); break;
+ case ISD::FP16_TO_FP: R = SoftenFloatRes_FP16_TO_FP(N); break;
case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
case ISD::FREM: R = SoftenFloatRes_FREM(N); break;
@@ -153,6 +155,32 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask);
}
+SDValue DAGTypeLegalizer::SoftenFloatRes_FMINNUM(SDNode *N) {
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
+ return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
+ RTLIB::FMIN_F32,
+ RTLIB::FMIN_F64,
+ RTLIB::FMIN_F80,
+ RTLIB::FMIN_F128,
+ RTLIB::FMIN_PPCF128),
+ NVT, Ops, 2, false, SDLoc(N)).first;
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FMAXNUM(SDNode *N) {
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
+ return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
+ RTLIB::FMAX_F32,
+ RTLIB::FMAX_F64,
+ RTLIB::FMAX_F80,
+ RTLIB::FMAX_F128,
+ RTLIB::FMAX_PPCF128),
+ NVT, Ops, 2, false, SDLoc(N)).first;
+}
+
SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@@ -373,23 +401,48 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Op = N->getOperand(0);
+
+ // There's only a libcall for f16 -> f32, so proceed in two stages. Also, it's
+ // entirely possible for both f16 and f32 to be legal, so use the fully
+ // hard-float FP_EXTEND rather than FP16_TO_FP.
+ if (Op.getValueType() == MVT::f16 && N->getValueType(0) != MVT::f32) {
+ Op = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), MVT::f32, Op);
+ if (getTypeAction(MVT::f32) == TargetLowering::TypeSoftenFloat)
+ SoftenFloatResult(Op.getNode(), 0);
+ }
+
RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
+ if (getTypeAction(Op.getValueType()) == TargetLowering::TypeSoftenFloat)
+ Op = GetSoftenedFloat(Op);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
}
// FIXME: Should we just use 'normal' FP_EXTEND / FP_TRUNC instead of special
// nodes?
-SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP32(SDNode *N) {
- EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+SDValue DAGTypeLegalizer::SoftenFloatRes_FP16_TO_FP(SDNode *N) {
+ EVT MidVT = TLI.getTypeToTransformTo(*DAG.getContext(), MVT::f32);
SDValue Op = N->getOperand(0);
- return TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, NVT, &Op, 1, false,
- SDLoc(N)).first;
+ SDValue Res32 = TLI.makeLibCall(DAG, RTLIB::FPEXT_F16_F32, MidVT, &Op, 1,
+ false, SDLoc(N)).first;
+ if (N->getValueType(0) == MVT::f32)
+ return Res32;
+
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ RTLIB::Libcall LC = RTLIB::getFPEXT(MVT::f32, N->getValueType(0));
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
+ return TLI.makeLibCall(DAG, LC, NVT, &Res32, 1, false, SDLoc(N)).first;
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Op = N->getOperand(0);
+ if (N->getValueType(0) == MVT::f16) {
+ // Semi-soften first, to FP_TO_FP16, so that targets which support f16 as a
+ // storage-only type get a chance to select things.
+ return DAG.getNode(ISD::FP_TO_FP16, SDLoc(N), NVT, Op);
+ }
+
RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
@@ -498,6 +551,9 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ if (N->getValueType(0) == MVT::f16)
+ return DAG.getNode(ISD::FP_TO_FP16, SDLoc(N), NVT, N->getOperand(0));
+
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::TRUNC_F32,
@@ -520,7 +576,7 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(),
L->getPointerInfo(), NVT, L->isVolatile(),
L->isNonTemporal(), false, L->getAlignment(),
- L->getTBAAInfo());
+ L->getAAInfo());
// Legalized the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
@@ -533,7 +589,7 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
L->getBasePtr(), L->getOffset(), L->getPointerInfo(),
L->getMemoryVT(), L->isVolatile(),
L->isNonTemporal(), false, L->getAlignment(),
- L->getTBAAInfo());
+ L->getAAInfo());
// Legalized the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
@@ -625,10 +681,11 @@ bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break;
case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
+ case ISD::FP_EXTEND: Res = SoftenFloatOp_FP_EXTEND(N); break;
+ case ISD::FP_TO_FP16: // Same as FP_ROUND for softening purposes
case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
- case ISD::FP32_TO_FP16:Res = SoftenFloatOp_FP32_TO_FP16(N); break;
case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
@@ -654,11 +711,32 @@ SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) {
GetSoftenedFloat(N->getOperand(0)));
}
+SDValue DAGTypeLegalizer::SoftenFloatOp_FP_EXTEND(SDNode *N) {
+ // If we get here, the result must be legal but the source illegal.
+ EVT SVT = N->getOperand(0).getValueType();
+ EVT RVT = N->getValueType(0);
+ SDValue Op = GetSoftenedFloat(N->getOperand(0));
+
+ if (SVT == MVT::f16)
+ return DAG.getNode(ISD::FP16_TO_FP, SDLoc(N), RVT, Op);
+
+ RTLIB::Libcall LC = RTLIB::getFPEXT(SVT, RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND libcall");
+
+ return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
+}
+
+
SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
+ // We actually deal with the partially-softened FP_TO_FP16 node too, which
+ // returns an i16 so doesn't meet the constraints necessary for FP_ROUND.
+ assert(N->getOpcode() == ISD::FP_ROUND || N->getOpcode() == ISD::FP_TO_FP16);
+
EVT SVT = N->getOperand(0).getValueType();
EVT RVT = N->getValueType(0);
+ EVT FloatRVT = N->getOpcode() == ISD::FP_TO_FP16 ? MVT::f16 : RVT;
- RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT);
+ RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, FloatRVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
SDValue Op = GetSoftenedFloat(N->getOperand(0));
@@ -704,13 +782,6 @@ SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
}
-SDValue DAGTypeLegalizer::SoftenFloatOp_FP32_TO_FP16(SDNode *N) {
- EVT RVT = N->getValueType(0);
- RTLIB::Libcall LC = RTLIB::FPROUND_F32_F16;
- SDValue Op = GetSoftenedFloat(N->getOperand(0));
- return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
-}
-
SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
@@ -813,6 +884,8 @@ void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
+ case ISD::FMINNUM: ExpandFloatRes_FMINNUM(N, Lo, Hi); break;
+ case ISD::FMAXNUM: ExpandFloatRes_FMAXNUM(N, Lo, Hi); break;
case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break;
@@ -876,6 +949,26 @@ void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
ISD::SETEQ);
}
+void DAGTypeLegalizer::ExpandFloatRes_FMINNUM(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::FMIN_F32, RTLIB::FMIN_F64,
+ RTLIB::FMIN_F80, RTLIB::FMIN_F128,
+ RTLIB::FMIN_PPCF128),
+ N, false);
+ GetPairElements(Call, Lo, Hi);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FMAXNUM(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::FMAX_F32, RTLIB::FMAX_F64,
+ RTLIB::FMAX_F80, RTLIB::FMAX_F128,
+ RTLIB::FMAX_PPCF128),
+ N, false);
+ GetPairElements(Call, Lo, Hi);
+}
+
void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
generated by cgit v1.1 at 2024-05-17 23:18:38 +0000