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-rw-r--r--lib/Target/CellSPU/SPUISelLowering.cpp378
1 files changed, 118 insertions, 260 deletions
diff --git a/lib/Target/CellSPU/SPUISelLowering.cpp b/lib/Target/CellSPU/SPUISelLowering.cpp
index e840ee0747..43248dd7be 100644
--- a/lib/Target/CellSPU/SPUISelLowering.cpp
+++ b/lib/Target/CellSPU/SPUISelLowering.cpp
@@ -1,5 +1,5 @@
-//===-- SPUISelLowering.cpp - Cell SPU DAG Lowering Implementation --------===//
//
+//===-- SPUISelLowering.cpp - Cell SPU DAG Lowering Implementation --------===//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
@@ -1353,7 +1353,7 @@ getVecImm(SDNode *N) {
}
}
- return 0; // All UNDEF: use implicit def.; not Constant node
+ return 0;
}
/// get_vec_i18imm - Test if this vector is a vector filled with the same value
@@ -1480,131 +1480,30 @@ SDValue SPU::get_v2i64_imm(SDNode *N, SelectionDAG &DAG) {
return SDValue();
}
-// If this is a vector of constants or undefs, get the bits. A bit in
-// UndefBits is set if the corresponding element of the vector is an
-// ISD::UNDEF value. For undefs, the corresponding VectorBits values are
-// zero. Return true if this is not an array of constants, false if it is.
-//
-static bool GetConstantBuildVectorBits(SDNode *BV, uint64_t VectorBits[2],
- uint64_t UndefBits[2]) {
- // Start with zero'd results.
- VectorBits[0] = VectorBits[1] = UndefBits[0] = UndefBits[1] = 0;
-
- unsigned EltBitSize = BV->getOperand(0).getValueType().getSizeInBits();
- for (unsigned i = 0, e = BV->getNumOperands(); i != e; ++i) {
- SDValue OpVal = BV->getOperand(i);
-
- unsigned PartNo = i >= e/2; // In the upper 128 bits?
- unsigned SlotNo = e/2 - (i & (e/2-1))-1; // Which subpiece of the uint64_t.
-
- uint64_t EltBits = 0;
- if (OpVal.getOpcode() == ISD::UNDEF) {
- uint64_t EltUndefBits = ~0ULL >> (64-EltBitSize);
- UndefBits[PartNo] |= EltUndefBits << (SlotNo*EltBitSize);
- continue;
- } else if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(OpVal)) {
- EltBits = CN->getZExtValue() & (~0ULL >> (64-EltBitSize));
- } else if (ConstantFPSDNode *CN = dyn_cast<ConstantFPSDNode>(OpVal)) {
- const APFloat &apf = CN->getValueAPF();
- EltBits = (CN->getValueType(0) == MVT::f32
- ? FloatToBits(apf.convertToFloat())
- : DoubleToBits(apf.convertToDouble()));
- } else {
- // Nonconstant element.
- return true;
- }
-
- VectorBits[PartNo] |= EltBits << (SlotNo*EltBitSize);
- }
-
- //printf("%llx %llx %llx %llx\n",
- // VectorBits[0], VectorBits[1], UndefBits[0], UndefBits[1]);
- return false;
-}
-
-/// If this is a splat (repetition) of a value across the whole vector, return
-/// the smallest size that splats it. For example, "0x01010101010101..." is a
-/// splat of 0x01, 0x0101, and 0x01010101. We return SplatBits = 0x01 and
-/// SplatSize = 1 byte.
-static bool isConstantSplat(const uint64_t Bits128[2],
- const uint64_t Undef128[2],
- int MinSplatBits,
- uint64_t &SplatBits, uint64_t &SplatUndef,
- int &SplatSize) {
- // Don't let undefs prevent splats from matching. See if the top 64-bits are
- // the same as the lower 64-bits, ignoring undefs.
- uint64_t Bits64 = Bits128[0] | Bits128[1];
- uint64_t Undef64 = Undef128[0] & Undef128[1];
- uint32_t Bits32 = uint32_t(Bits64) | uint32_t(Bits64 >> 32);
- uint32_t Undef32 = uint32_t(Undef64) & uint32_t(Undef64 >> 32);
- uint16_t Bits16 = uint16_t(Bits32) | uint16_t(Bits32 >> 16);
- uint16_t Undef16 = uint16_t(Undef32) & uint16_t(Undef32 >> 16);
-
- if ((Bits128[0] & ~Undef128[1]) == (Bits128[1] & ~Undef128[0])) {
- if (MinSplatBits < 64) {
-
- // Check that the top 32-bits are the same as the lower 32-bits, ignoring
- // undefs.
- if ((Bits64 & (~Undef64 >> 32)) == ((Bits64 >> 32) & ~Undef64)) {
- if (MinSplatBits < 32) {
-
- // If the top 16-bits are different than the lower 16-bits, ignoring
- // undefs, we have an i32 splat.
- if ((Bits32 & (~Undef32 >> 16)) == ((Bits32 >> 16) & ~Undef32)) {
- if (MinSplatBits < 16) {
- // If the top 8-bits are different than the lower 8-bits, ignoring
- // undefs, we have an i16 splat.
- if ((Bits16 & (uint16_t(~Undef16) >> 8))
- == ((Bits16 >> 8) & ~Undef16)) {
- // Otherwise, we have an 8-bit splat.
- SplatBits = uint8_t(Bits16) | uint8_t(Bits16 >> 8);
- SplatUndef = uint8_t(Undef16) & uint8_t(Undef16 >> 8);
- SplatSize = 1;
- return true;
- }
- } else {
- SplatBits = Bits16;
- SplatUndef = Undef16;
- SplatSize = 2;
- return true;
- }
- }
- } else {
- SplatBits = Bits32;
- SplatUndef = Undef32;
- SplatSize = 4;
- return true;
- }
- }
- } else {
- SplatBits = Bits128[0];
- SplatUndef = Undef128[0];
- SplatSize = 8;
- return true;
- }
- }
-
- return false; // Can't be a splat if two pieces don't match.
-}
-
//! Lower a BUILD_VECTOR instruction creatively:
SDValue
LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) {
MVT VT = Op.getValueType();
+ MVT EltVT = VT.getVectorElementType();
DebugLoc dl = Op.getDebugLoc();
- // If this is a vector of constants or undefs, get the bits. A bit in
- // UndefBits is set if the corresponding element of the vector is an
- // ISD::UNDEF value. For undefs, the corresponding VectorBits values are
- // zero.
- uint64_t VectorBits[2];
- uint64_t UndefBits[2];
- uint64_t SplatBits, SplatUndef;
- int SplatSize;
- if (GetConstantBuildVectorBits(Op.getNode(), VectorBits, UndefBits)
- || !isConstantSplat(VectorBits, UndefBits,
- VT.getVectorElementType().getSizeInBits(),
- SplatBits, SplatUndef, SplatSize))
- return SDValue(); // Not a constant vector, not a splat.
+ BuildVectorSDNode *BCN = dyn_cast<BuildVectorSDNode>(Op.getNode());
+ assert(BCN != 0 && "Expected BuildVectorSDNode in SPU LowerBUILD_VECTOR");
+ unsigned minSplatBits = EltVT.getSizeInBits();
+
+ if (minSplatBits < 16)
+ minSplatBits = 16;
+
+ APInt APSplatBits, APSplatUndef;
+ unsigned SplatBitSize;
+ bool HasAnyUndefs;
+
+ if (!BCN->isConstantSplat(APSplatBits, APSplatUndef, SplatBitSize,
+ HasAnyUndefs, minSplatBits)
+ || minSplatBits < SplatBitSize)
+ return SDValue(); // Wasn't a constant vector or splat exceeded min
+
+ uint64_t SplatBits = APSplatBits.getZExtValue();
+ unsigned SplatSize = SplatBitSize / 8;
switch (VT.getSimpleVT()) {
default:
@@ -1620,8 +1519,7 @@ LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) {
// NOTE: pretend the constant is an integer. LLVM won't load FP constants
SDValue T = DAG.getConstant(Value32, MVT::i32);
return DAG.getNode(ISD::BIT_CONVERT, dl, MVT::v4f32,
- DAG.getNode(ISD::BUILD_VECTOR, dl,
- MVT::v4i32, T, T, T, T));
+ DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, T, T, T, T));
break;
}
case MVT::v2f64: {
@@ -1636,45 +1534,42 @@ LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) {
}
case MVT::v16i8: {
// 8-bit constants have to be expanded to 16-bits
- unsigned short Value16 = SplatBits | (SplatBits << 8);
- SDValue Ops[8];
- for (int i = 0; i < 8; ++i)
- Ops[i] = DAG.getConstant(Value16, MVT::i16);
+ unsigned short Value16 = SplatBits /* | (SplatBits << 8) */;
+ SmallVector<SDValue, 8> Ops;
+
+ Ops.assign(8, DAG.getConstant(Value16, MVT::i16));
return DAG.getNode(ISD::BIT_CONVERT, dl, VT,
- DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v8i16, Ops, 8));
+ DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v8i16, &Ops[0], Ops.size()));
}
case MVT::v8i16: {
- unsigned short Value16;
- if (SplatSize == 2)
- Value16 = (unsigned short) (SplatBits & 0xffff);
- else
- Value16 = (unsigned short) (SplatBits | (SplatBits << 8));
- SDValue T = DAG.getConstant(Value16, VT.getVectorElementType());
- SDValue Ops[8];
- for (int i = 0; i < 8; ++i) Ops[i] = T;
- return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, Ops, 8);
+ unsigned short Value16 = SplatBits;
+ SDValue T = DAG.getConstant(Value16, EltVT);
+ SmallVector<SDValue, 8> Ops;
+
+ Ops.assign(8, T);
+ return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size());
}
case MVT::v4i32: {
- unsigned int Value = SplatBits;
- SDValue T = DAG.getConstant(Value, VT.getVectorElementType());
+ SDValue T = DAG.getConstant(unsigned(SplatBits), VT.getVectorElementType());
return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, T, T, T, T);
}
case MVT::v2i32: {
- unsigned int Value = SplatBits;
- SDValue T = DAG.getConstant(Value, VT.getVectorElementType());
+ SDValue T = DAG.getConstant(unsigned(SplatBits), VT.getVectorElementType());
return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, T, T);
}
case MVT::v2i64: {
- return SPU::LowerSplat_v2i64(VT, DAG, SplatBits, dl);
+ return SPU::LowerV2I64Splat(VT, DAG, SplatBits, dl);
}
}
return SDValue();
}
+/*!
+ */
SDValue
-SPU::LowerSplat_v2i64(MVT OpVT, SelectionDAG& DAG, uint64_t SplatVal,
- DebugLoc dl) {
+SPU::LowerV2I64Splat(MVT OpVT, SelectionDAG& DAG, uint64_t SplatVal,
+ DebugLoc dl) {
uint32_t upper = uint32_t(SplatVal >> 32);
uint32_t lower = uint32_t(SplatVal);
@@ -1685,10 +1580,6 @@ SPU::LowerSplat_v2i64(MVT OpVT, SelectionDAG& DAG, uint64_t SplatVal,
DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
Val, Val, Val, Val));
} else {
- SDValue LO32;
- SDValue HI32;
- SmallVector<SDValue, 16> ShufBytes;
- SDValue Result;
bool upper_special, lower_special;
// NOTE: This code creates common-case shuffle masks that can be easily
@@ -1699,6 +1590,18 @@ SPU::LowerSplat_v2i64(MVT OpVT, SelectionDAG& DAG, uint64_t SplatVal,
upper_special = (upper == 0 || upper == 0xffffffff || upper == 0x80000000);
lower_special = (lower == 0 || lower == 0xffffffff || lower == 0x80000000);
+ // Both upper and lower are special, lower to a constant pool load:
+ if (lower_special && upper_special) {
+ SDValue SplatValCN = DAG.getConstant(SplatVal, MVT::i64);
+ return DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v2i64,
+ SplatValCN, SplatValCN);
+ }
+
+ SDValue LO32;
+ SDValue HI32;
+ SmallVector<SDValue, 16> ShufBytes;
+ SDValue Result;
+
// Create lower vector if not a special pattern
if (!lower_special) {
SDValue LO32C = DAG.getConstant(lower, MVT::i32);
@@ -1721,13 +1624,6 @@ SPU::LowerSplat_v2i64(MVT OpVT, SelectionDAG& DAG, uint64_t SplatVal,
LO32 = HI32;
if (upper_special)
HI32 = LO32;
- if (lower_special && upper_special) {
- // Unhappy situation... both upper and lower are special, so punt with
- // a target constant:
- SDValue Zero = DAG.getConstant(0, MVT::i32);
- HI32 = LO32 = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, Zero, Zero,
- Zero, Zero);
- }
for (int i = 0; i < 4; ++i) {
uint64_t val = 0;
@@ -2022,9 +1918,9 @@ static SDValue LowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) {
ShufMask[i] = DAG.getConstant(bits, MVT::i32);
}
- SDValue ShufMaskVec = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
- &ShufMask[0],
- sizeof(ShufMask) / sizeof(ShufMask[0]));
+ SDValue ShufMaskVec =
+ DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
+ &ShufMask[0], sizeof(ShufMask)/sizeof(ShufMask[0]));
retval = DAG.getNode(SPUISD::VEC2PREFSLOT, dl, VT,
DAG.getNode(SPUISD::SHUFB, dl, N.getValueType(),
@@ -2067,28 +1963,28 @@ static SDValue LowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) {
/*NOTREACHED*/
case MVT::i8: {
SDValue factor = DAG.getConstant(0x00000000, MVT::i32);
- replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, factor, factor,
- factor, factor);
+ replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
+ factor, factor, factor, factor);
break;
}
case MVT::i16: {
SDValue factor = DAG.getConstant(0x00010001, MVT::i32);
- replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, factor, factor,
- factor, factor);
+ replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
+ factor, factor, factor, factor);
break;
}
case MVT::i32:
case MVT::f32: {
SDValue factor = DAG.getConstant(0x00010203, MVT::i32);
- replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, factor, factor,
- factor, factor);
+ replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
+ factor, factor, factor, factor);
break;
}
case MVT::i64:
case MVT::f64: {
SDValue loFactor = DAG.getConstant(0x00010203, MVT::i32);
SDValue hiFactor = DAG.getConstant(0x04050607, MVT::i32);
- replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
+ replicate = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
loFactor, hiFactor, loFactor, hiFactor);
break;
}
@@ -2164,71 +2060,65 @@ static SDValue LowerI8Math(SDValue Op, SelectionDAG &DAG, unsigned Opc,
case ISD::ROTR:
case ISD::ROTL: {
SDValue N1 = Op.getOperand(1);
- unsigned N1Opc;
- N0 = (N0.getOpcode() != ISD::Constant
- ? DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i16, N0)
- : DAG.getConstant(cast<ConstantSDNode>(N0)->getZExtValue(),
- MVT::i16));
- N1Opc = N1.getValueType().bitsLT(ShiftVT)
- ? ISD::ZERO_EXTEND
- : ISD::TRUNCATE;
- N1 = (N1.getOpcode() != ISD::Constant
- ? DAG.getNode(N1Opc, dl, ShiftVT, N1)
- : DAG.getConstant(cast<ConstantSDNode>(N1)->getZExtValue(),
- TLI.getShiftAmountTy()));
+ MVT N1VT = N1.getValueType();
+
+ N0 = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i16, N0);
+ if (!N1VT.bitsEq(ShiftVT)) {
+ unsigned N1Opc = N1.getValueType().bitsLT(ShiftVT)
+ ? ISD::ZERO_EXTEND
+ : ISD::TRUNCATE;
+ N1 = DAG.getNode(N1Opc, dl, ShiftVT, N1);
+ }
+
+ // Replicate lower 8-bits into upper 8:
SDValue ExpandArg =
DAG.getNode(ISD::OR, dl, MVT::i16, N0,
DAG.getNode(ISD::SHL, dl, MVT::i16,
N0, DAG.getConstant(8, MVT::i32)));
+
+ // Truncate back down to i8
return DAG.getNode(ISD::TRUNCATE, dl, MVT::i8,
DAG.getNode(Opc, dl, MVT::i16, ExpandArg, N1));
}
case ISD::SRL:
case ISD::SHL: {
SDValue N1 = Op.getOperand(1);
- unsigned N1Opc;
- N0 = (N0.getOpcode() != ISD::Constant
- ? DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i16, N0)
- : DAG.getConstant(cast<ConstantSDNode>(N0)->getZExtValue(),
- MVT::i32));
- N1Opc = N1.getValueType().bitsLT(ShiftVT)
- ? ISD::ZERO_EXTEND
- : ISD::TRUNCATE;
- N1 = (N1.getOpcode() != ISD::Constant
- ? DAG.getNode(N1Opc, dl, ShiftVT, N1)
- : DAG.getConstant(cast<ConstantSDNode>(N1)->getZExtValue(), ShiftVT));
+ MVT N1VT = N1.getValueType();
+
+ N0 = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i16, N0);
+ if (!N1VT.bitsEq(ShiftVT)) {
+ unsigned N1Opc = ISD::ZERO_EXTEND;
+
+ if (N1.getValueType().bitsGT(ShiftVT))
+ N1Opc = ISD::TRUNCATE;
+
+ N1 = DAG.getNode(N1Opc, dl, ShiftVT, N1);
+ }
+
return DAG.getNode(ISD::TRUNCATE, dl, MVT::i8,
DAG.getNode(Opc, dl, MVT::i16, N0, N1));
}
case ISD::SRA: {
SDValue N1 = Op.getOperand(1);
- unsigned N1Opc;
- N0 = (N0.getOpcode() != ISD::Constant
- ? DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i16, N0)
- : DAG.getConstant(cast<ConstantSDNode>(N0)->getSExtValue(),
- MVT::i16));
- N1Opc = N1.getValueType().bitsLT(ShiftVT)
- ? ISD::SIGN_EXTEND
- : ISD::TRUNCATE;
- N1 = (N1.getOpcode() != ISD::Constant
- ? DAG.getNode(N1Opc, dl, ShiftVT, N1)
- : DAG.getConstant(cast<ConstantSDNode>(N1)->getZExtValue(),
- ShiftVT));
+ MVT N1VT = N1.getValueType();
+
+ N0 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i16, N0);
+ if (!N1VT.bitsEq(ShiftVT)) {
+ unsigned N1Opc = ISD::SIGN_EXTEND;
+
+ if (N1VT.bitsGT(ShiftVT))
+ N1Opc = ISD::TRUNCATE;
+ N1 = DAG.getNode(N1Opc, dl, ShiftVT, N1);
+ }
+
return DAG.getNode(ISD::TRUNCATE, dl, MVT::i8,
DAG.getNode(Opc, dl, MVT::i16, N0, N1));
}
case ISD::MUL: {
SDValue N1 = Op.getOperand(1);
- unsigned N1Opc;
- N0 = (N0.getOpcode() != ISD::Constant
- ? DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i16, N0)
- : DAG.getConstant(cast<ConstantSDNode>(N0)->getZExtValue(),
- MVT::i16));
- N1Opc = N1.getValueType().bitsLT(MVT::i16) ? ISD::SIGN_EXTEND : ISD::TRUNCATE;
- N1 = (N1.getOpcode() != ISD::Constant
- ? DAG.getNode(N1Opc, dl, MVT::i16, N1)
- : DAG.getConstant(cast<ConstantSDNode>(N1)->getSExtValue(),
- MVT::i16));
+
+ N0 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i16, N0);
+ N1 = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i16, N1);
return DAG.getNode(ISD::TRUNCATE, dl, MVT::i8,
DAG.getNode(Opc, dl, MVT::i16, N0, N1));
break;
@@ -2238,36 +2128,6 @@ static SDValue LowerI8Math(SDValue Op, SelectionDAG &DAG, unsigned Opc,
return SDValue();
}
-//! Generate the carry-generate shuffle mask.
-SDValue SPU::getCarryGenerateShufMask(SelectionDAG &DAG, DebugLoc dl) {
- SmallVector<SDValue, 16 > ShufBytes;
-
- // Create the shuffle mask for "rotating" the borrow up one register slot
- // once the borrow is generated.
- ShufBytes.push_back(DAG.getConstant(0x04050607, MVT::i32));
- ShufBytes.push_back(DAG.getConstant(0x80808080, MVT::i32));
- ShufBytes.push_back(DAG.getConstant(0x0c0d0e0f, MVT::i32));
- ShufBytes.push_back(DAG.getConstant(0x80808080, MVT::i32));
-
- return DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
- &ShufBytes[0], ShufBytes.size());
-}
-
-//! Generate the borrow-generate shuffle mask
-SDValue SPU::getBorrowGenerateShufMask(SelectionDAG &DAG, DebugLoc dl) {
- SmallVector<SDValue, 16 > ShufBytes;
-
- // Create the shuffle mask for "rotating" the borrow up one register slot
- // once the borrow is generated.
- ShufBytes.push_back(DAG.getConstant(0x04050607, MVT::i32));
- ShufBytes.push_back(DAG.getConstant(0xc0c0c0c0, MVT::i32));
- ShufBytes.push_back(DAG.getConstant(0x0c0d0e0f, MVT::i32));
- ShufBytes.push_back(DAG.getConstant(0xc0c0c0c0, MVT::i32));
-
- return DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
- &ShufBytes[0], ShufBytes.size());
-}
-
//! Lower byte immediate operations for v16i8 vectors:
static SDValue
LowerByteImmed(SDValue Op, SelectionDAG &DAG) {
@@ -2291,26 +2151,24 @@ LowerByteImmed(SDValue Op, SelectionDAG &DAG) {
}
if (ConstVec.getNode()->getOpcode() == ISD::BUILD_VECTOR) {
- uint64_t VectorBits[2];
- uint64_t UndefBits[2];
- uint64_t SplatBits, SplatUndef;
- int SplatSize;
-
- if (!GetConstantBuildVectorBits(ConstVec.getNode(), VectorBits, UndefBits)
- && isConstantSplat(VectorBits, UndefBits,
- VT.getVectorElementType().getSizeInBits(),
- SplatBits, SplatUndef, SplatSize)) {
- SDValue tcVec[16];
+ BuildVectorSDNode *BCN = dyn_cast<BuildVectorSDNode>(ConstVec.getNode());
+ assert(BCN != 0 && "Expected BuildVectorSDNode in SPU LowerByteImmed");
+
+ APInt APSplatBits, APSplatUndef;
+ unsigned SplatBitSize;
+ bool HasAnyUndefs;
+ unsigned minSplatBits = VT.getVectorElementType().getSizeInBits();
+
+ if (BCN->isConstantSplat(APSplatBits, APSplatUndef, SplatBitSize,
+ HasAnyUndefs, minSplatBits)
+ && minSplatBits <= SplatBitSize) {
+ uint64_t SplatBits = APSplatBits.getZExtValue();
SDValue tc = DAG.getTargetConstant(SplatBits & 0xff, MVT::i8);
- const size_t tcVecSize = sizeof(tcVec) / sizeof(tcVec[0]);
-
- // Turn the BUILD_VECTOR into a set of target constants:
- for (size_t i = 0; i < tcVecSize; ++i)
- tcVec[i] = tc;
+ SmallVector<SDValue, 16> tcVec;
+ tcVec.assign(16, tc);
return DAG.getNode(Op.getNode()->getOpcode(), dl, VT, Arg,
- DAG.getNode(ISD::BUILD_VECTOR, dl, VT,
- tcVec, tcVecSize));
+ DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &tcVec[0], tcVec.size()));
}
}
@@ -2452,7 +2310,7 @@ static SDValue LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG,
return ExpandLibCall(LC, Op, DAG, false, Dummy, TLI);
}
- return Op; // return unmolested, legalized op
+ return SDValue();
}
//! Lower ISD::SINT_TO_FP, ISD::UINT_TO_FP for i32
@@ -2478,7 +2336,7 @@ static SDValue LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG,
return ExpandLibCall(LC, Op, DAG, false, Dummy, TLI);
}
- return Op; // return unmolested, legalized
+ return SDValue();
}
//! Lower ISD::SETCC
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-09-05 16:36:21 +0000