setOperationAction(ISD::MUL, MVT::v8i16, Custom);
setOperationAction(ISD::MUL, MVT::v4i32, Custom);
setOperationAction(ISD::MUL, MVT::v2i64, Custom);
+ // Custom handling for some vector types to avoid expensive expansions
+ setOperationAction(ISD::SDIV, MVT::v4i16, Custom);
+ setOperationAction(ISD::SDIV, MVT::v8i8, Custom);
+ setOperationAction(ISD::UDIV, MVT::v4i16, Custom);
+ setOperationAction(ISD::UDIV, MVT::v8i8, Custom);
setOperationAction(ISD::VSETCC, MVT::v1i64, Expand);
setOperationAction(ISD::VSETCC, MVT::v2i64, Expand);
RC = ARM::GPRRegisterClass;
// Transform the arguments stored in physical registers into virtual ones.
- unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC, dl);
+ unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC);
SDValue ArgValue = DAG.getCopyFromReg(Root, dl, Reg, MVT::i32);
SDValue ArgValue2;
MachinePointerInfo::getFixedStack(FI),
false, false, 0);
} else {
- Reg = MF.addLiveIn(NextVA.getLocReg(), RC, dl);
+ Reg = MF.addLiveIn(NextVA.getLocReg(), RC);
ArgValue2 = DAG.getCopyFromReg(Root, dl, Reg, MVT::i32);
}
llvm_unreachable("RegVT not supported by FORMAL_ARGUMENTS Lowering");
// Transform the arguments in physical registers into virtual ones.
- unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC, dl);
+ unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC);
ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, RegVT);
}
else
RC = ARM::GPRRegisterClass;
- unsigned VReg = MF.addLiveIn(GPRArgRegs[NumGPRs], RC, dl);
+ unsigned VReg = MF.addLiveIn(GPRArgRegs[NumGPRs], RC);
SDValue Val = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
SDValue Store =
DAG.getStore(Val.getValue(1), dl, Val, FIN,
DebugLoc dl = Op.getDebugLoc();
EVT VT = Op.getValueType();
EVT SrcVT = Tmp1.getValueType();
- SDValue AbsVal = DAG.getNode(ISD::FABS, dl, VT, Tmp0);
- SDValue ARMcc = DAG.getConstant(ARMCC::LT, MVT::i32);
- SDValue FP0 = DAG.getConstantFP(0.0, SrcVT);
- SDValue Cmp = getVFPCmp(Tmp1, FP0, DAG, dl);
+ bool F2IisFast = Subtarget->isCortexA9() ||
+ Tmp0.getOpcode() == ISD::BITCAST || Tmp0.getOpcode() == ARMISD::VMOVDRR;
+
+ // Bitcast operand 1 to i32.
+ if (SrcVT == MVT::f64)
+ Tmp1 = DAG.getNode(ARMISD::VMOVRRD, dl, DAG.getVTList(MVT::i32, MVT::i32),
+ &Tmp1, 1).getValue(1);
+ Tmp1 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Tmp1);
+
+ // If float to int conversion isn't going to be super expensive, then simply
+ // or in the signbit.
+ if (F2IisFast) {
+ SDValue Mask1 = DAG.getConstant(0x80000000, MVT::i32);
+ SDValue Mask2 = DAG.getConstant(0x7fffffff, MVT::i32);
+ Tmp1 = DAG.getNode(ISD::AND, dl, MVT::i32, Tmp1, Mask1);
+ if (VT == MVT::f32) {
+ Tmp0 = DAG.getNode(ISD::AND, dl, MVT::i32,
+ DAG.getNode(ISD::BITCAST, dl, MVT::i32, Tmp0), Mask2);
+ return DAG.getNode(ISD::BITCAST, dl, MVT::f32,
+ DAG.getNode(ISD::OR, dl, MVT::i32, Tmp0, Tmp1));
+ }
+
+ // f64: Or the high part with signbit and then combine two parts.
+ Tmp0 = DAG.getNode(ARMISD::VMOVRRD, dl, DAG.getVTList(MVT::i32, MVT::i32),
+ &Tmp0, 1);
+ SDValue Lo = Tmp0.getValue(0);
+ SDValue Hi = DAG.getNode(ISD::AND, dl, MVT::i32, Tmp0.getValue(1), Mask2);
+ Hi = DAG.getNode(ISD::OR, dl, MVT::i32, Hi, Tmp1);
+ return DAG.getNode(ARMISD::VMOVDRR, dl, MVT::f64, Lo, Hi);
+ }
+
+ // Remove the signbit of operand 0.
+ Tmp0 = DAG.getNode(ISD::FABS, dl, VT, Tmp0);
+
+ // If operand 1 signbit is one, then negate operand 0.
+ SDValue ARMcc;
+ SDValue Cmp = getARMCmp(Tmp1, DAG.getConstant(0, MVT::i32),
+ ISD::SETLT, ARMcc, DAG, dl);
SDValue CCR = DAG.getRegister(ARM::CPSR, MVT::i32);
- return DAG.getNode(ARMISD::CNEG, dl, VT, AbsVal, AbsVal, ARMcc, CCR, Cmp);
+ return DAG.getNode(ARMISD::CNEG, dl, VT, Tmp0, Tmp0, ARMcc, CCR, Cmp);
}
SDValue ARMTargetLowering::LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const{
}
// Return LR, which contains the return address. Mark it an implicit live-in.
- unsigned Reg = MF.addLiveIn(ARM::LR, getRegClassFor(MVT::i32), dl);
+ unsigned Reg = MF.addLiveIn(ARM::LR, getRegClassFor(MVT::i32));
return DAG.getCopyFromReg(DAG.getEntryNode(), dl, Reg, VT);
}
return DAG.getNode(NewOpc, DL, VT, Op0, Op1);
}
+static SDValue
+LowerSDIV_v4i8(SDValue X, SDValue Y, DebugLoc dl, SelectionDAG &DAG) {
+ // Convert to float
+ // float4 xf = vcvt_f32_s32(vmovl_s16(a.lo));
+ // float4 yf = vcvt_f32_s32(vmovl_s16(b.lo));
+ X = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v4i32, X);
+ Y = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v4i32, Y);
+ X = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::v4f32, X);
+ Y = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::v4f32, Y);
+ // Get reciprocal estimate.
+ // float4 recip = vrecpeq_f32(yf);
+ Y = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v4f32,
+ DAG.getConstant(Intrinsic::arm_neon_vrecpe, MVT::i32), Y);
+ // Because char has a smaller range than uchar, we can actually get away
+ // without any newton steps. This requires that we use a weird bias
+ // of 0xb000, however (again, this has been exhaustively tested).
+ // float4 result = as_float4(as_int4(xf*recip) + 0xb000);
+ X = DAG.getNode(ISD::FMUL, dl, MVT::v4f32, X, Y);
+ X = DAG.getNode(ISD::BITCAST, dl, MVT::v4i32, X);
+ Y = DAG.getConstant(0xb000, MVT::i32);
+ Y = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, Y, Y, Y, Y);
+ X = DAG.getNode(ISD::ADD, dl, MVT::v4i32, X, Y);
+ X = DAG.getNode(ISD::BITCAST, dl, MVT::v4f32, X);
+ // Convert back to short.
+ X = DAG.getNode(ISD::FP_TO_SINT, dl, MVT::v4i32, X);
+ X = DAG.getNode(ISD::TRUNCATE, dl, MVT::v4i16, X);
+ return X;
+}
+
+static SDValue
+LowerSDIV_v4i16(SDValue N0, SDValue N1, DebugLoc dl, SelectionDAG &DAG) {
+ SDValue N2;
+ // Convert to float.
+ // float4 yf = vcvt_f32_s32(vmovl_s16(y));
+ // float4 xf = vcvt_f32_s32(vmovl_s16(x));
+ N0 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v4i32, N0);
+ N1 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v4i32, N1);
+ N0 = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::v4f32, N0);
+ N1 = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::v4f32, N1);
+
+ // Use reciprocal estimate and one refinement step.
+ // float4 recip = vrecpeq_f32(yf);
+ // recip *= vrecpsq_f32(yf, recip);
+ N2 = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v4f32,
+ DAG.getConstant(Intrinsic::arm_neon_vrecpe, MVT::i32), N1);
+ N1 = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v4f32,
+ DAG.getConstant(Intrinsic::arm_neon_vrecps, MVT::i32),
+ N1, N2);
+ N2 = DAG.getNode(ISD::FMUL, dl, MVT::v4f32, N1, N2);
+ // Because short has a smaller range than ushort, we can actually get away
+ // with only a single newton step. This requires that we use a weird bias
+ // of 89, however (again, this has been exhaustively tested).
+ // float4 result = as_float4(as_int4(xf*recip) + 89);
+ N0 = DAG.getNode(ISD::FMUL, dl, MVT::v4f32, N0, N2);
+ N0 = DAG.getNode(ISD::BITCAST, dl, MVT::v4i32, N0);
+ N1 = DAG.getConstant(89, MVT::i32);
+ N1 = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, N1, N1, N1, N1);
+ N0 = DAG.getNode(ISD::ADD, dl, MVT::v4i32, N0, N1);
+ N0 = DAG.getNode(ISD::BITCAST, dl, MVT::v4f32, N0);
+ // Convert back to integer and return.
+ // return vmovn_s32(vcvt_s32_f32(result));
+ N0 = DAG.getNode(ISD::FP_TO_SINT, dl, MVT::v4i32, N0);
+ N0 = DAG.getNode(ISD::TRUNCATE, dl, MVT::v4i16, N0);
+ return N0;
+}
+
+static SDValue LowerSDIV(SDValue Op, SelectionDAG &DAG) {
+ EVT VT = Op.getValueType();
+ assert((VT == MVT::v4i16 || VT == MVT::v8i8) &&
+ "unexpected type for custom-lowering ISD::SDIV");
+
+ DebugLoc dl = Op.getDebugLoc();
+ SDValue N0 = Op.getOperand(0);
+ SDValue N1 = Op.getOperand(1);
+ SDValue N2, N3;
+
+ if (VT == MVT::v8i8) {
+ N0 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v8i16, N0);
+ N1 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::v8i16, N1);
+
+ N2 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N0,
+ DAG.getIntPtrConstant(4));
+ N3 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N1,
+ DAG.getIntPtrConstant(4));
+ N0 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N0,
+ DAG.getIntPtrConstant(0));
+ N1 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N1,
+ DAG.getIntPtrConstant(0));
+
+ N0 = LowerSDIV_v4i8(N0, N1, dl, DAG); // v4i16
+ N2 = LowerSDIV_v4i8(N2, N3, dl, DAG); // v4i16
+
+ N0 = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v8i16, N0, N2);
+ N0 = LowerCONCAT_VECTORS(N0, DAG);
+
+ N0 = DAG.getNode(ISD::TRUNCATE, dl, MVT::v8i8, N0);
+ return N0;
+ }
+ return LowerSDIV_v4i16(N0, N1, dl, DAG);
+}
+
+static SDValue LowerUDIV(SDValue Op, SelectionDAG &DAG) {
+ EVT VT = Op.getValueType();
+ assert((VT == MVT::v4i16 || VT == MVT::v8i8) &&
+ "unexpected type for custom-lowering ISD::UDIV");
+
+ DebugLoc dl = Op.getDebugLoc();
+ SDValue N0 = Op.getOperand(0);
+ SDValue N1 = Op.getOperand(1);
+ SDValue N2, N3;
+
+ if (VT == MVT::v8i8) {
+ N0 = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::v8i16, N0);
+ N1 = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::v8i16, N1);
+
+ N2 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N0,
+ DAG.getIntPtrConstant(4));
+ N3 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N1,
+ DAG.getIntPtrConstant(4));
+ N0 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N0,
+ DAG.getIntPtrConstant(0));
+ N1 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, MVT::v4i16, N1,
+ DAG.getIntPtrConstant(0));
+
+ N0 = LowerSDIV_v4i16(N0, N1, dl, DAG); // v4i16
+ N2 = LowerSDIV_v4i16(N2, N3, dl, DAG); // v4i16
+
+ N0 = DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v8i16, N0, N2);
+ N0 = LowerCONCAT_VECTORS(N0, DAG);
+
+ N0 = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v8i8,
+ DAG.getConstant(Intrinsic::arm_neon_vqmovnsu, MVT::i32),
+ N0);
+ return N0;
+ }
+
+ // v4i16 sdiv ... Convert to float.
+ // float4 yf = vcvt_f32_s32(vmovl_u16(y));
+ // float4 xf = vcvt_f32_s32(vmovl_u16(x));
+ N0 = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::v4i32, N0);
+ N1 = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::v4i32, N1);
+ N0 = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::v4f32, N0);
+ N1 = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::v4f32, N1);
+
+ // Use reciprocal estimate and two refinement steps.
+ // float4 recip = vrecpeq_f32(yf);
+ // recip *= vrecpsq_f32(yf, recip);
+ // recip *= vrecpsq_f32(yf, recip);
+ N2 = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v4f32,
+ DAG.getConstant(Intrinsic::arm_neon_vrecpe, MVT::i32), N1);
+ N1 = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v4f32,
+ DAG.getConstant(Intrinsic::arm_neon_vrecps, MVT::i32),
+ N1, N2);
+ N2 = DAG.getNode(ISD::FMUL, dl, MVT::v4f32, N1, N2);
+ N1 = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, MVT::v4f32,
+ DAG.getConstant(Intrinsic::arm_neon_vrecps, MVT::i32),
+ N1, N2);
+ N2 = DAG.getNode(ISD::FMUL, dl, MVT::v4f32, N1, N2);
+ // Simply multiplying by the reciprocal estimate can leave us a few ulps
+ // too low, so we add 2 ulps (exhaustive testing shows that this is enough,
+ // and that it will never cause us to return an answer too large).
+ // float4 result = as_float4(as_int4(xf*recip) + 89);
+ N0 = DAG.getNode(ISD::FMUL, dl, MVT::v4f32, N0, N2);
+ N0 = DAG.getNode(ISD::BITCAST, dl, MVT::v4i32, N0);
+ N1 = DAG.getConstant(2, MVT::i32);
+ N1 = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, N1, N1, N1, N1);
+ N0 = DAG.getNode(ISD::ADD, dl, MVT::v4i32, N0, N1);
+ N0 = DAG.getNode(ISD::BITCAST, dl, MVT::v4f32, N0);
+ // Convert back to integer and return.
+ // return vmovn_u32(vcvt_s32_f32(result));
+ N0 = DAG.getNode(ISD::FP_TO_SINT, dl, MVT::v4i32, N0);
+ N0 = DAG.getNode(ISD::TRUNCATE, dl, MVT::v4i16, N0);
+ return N0;
+}
+
SDValue ARMTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
switch (Op.getOpcode()) {
default: llvm_unreachable("Don't know how to custom lower this!");
case ISD::CONCAT_VECTORS: return LowerCONCAT_VECTORS(Op, DAG);
case ISD::FLT_ROUNDS_: return LowerFLT_ROUNDS_(Op, DAG);
case ISD::MUL: return LowerMUL(Op, DAG);
+ case ISD::SDIV: return LowerSDIV(Op, DAG);
+ case ISD::UDIV: return LowerUDIV(Op, DAG);
}
return SDValue();
}
default: llvm_unreachable("unsupported size for AtomicCmpSwap!");
case 1:
ldrOpc = isThumb2 ? ARM::t2LDREXB : ARM::LDREXB;
- strOpc = isThumb2 ? ARM::t2LDREXB : ARM::STREXB;
+ strOpc = isThumb2 ? ARM::t2STREXB : ARM::STREXB;
break;
case 2:
ldrOpc = isThumb2 ? ARM::t2LDREXH : ARM::LDREXH;
projects / oota-llvm.git / blobdiff