diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index 3ff77fc0161..5fc22e4af14 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -1101,7 +1101,7 @@ static bool isConstantOrUndef(int Op, int Val) { /// VPKUHUM instruction. /// The ShuffleKind distinguishes between big-endian operations with /// two different inputs (0), either-endian operations with two identical -/// inputs (1), and little-endian operantion with two different inputs (2). +/// inputs (1), and little-endian operations with two different inputs (2). /// For the latter, the input operands are swapped (see PPCInstrAltivec.td). bool PPC::isVPKUHUMShuffleMask(ShuffleVectorSDNode *N, unsigned ShuffleKind, SelectionDAG &DAG) { @@ -1132,7 +1132,7 @@ bool PPC::isVPKUHUMShuffleMask(ShuffleVectorSDNode *N, unsigned ShuffleKind, /// VPKUWUM instruction. /// The ShuffleKind distinguishes between big-endian operations with /// two different inputs (0), either-endian operations with two identical -/// inputs (1), and little-endian operantion with two different inputs (2). +/// inputs (1), and little-endian operations with two different inputs (2). /// For the latter, the input operands are swapped (see PPCInstrAltivec.td). bool PPC::isVPKUWUMShuffleMask(ShuffleVectorSDNode *N, unsigned ShuffleKind, SelectionDAG &DAG) { @@ -1163,6 +1163,49 @@ bool PPC::isVPKUWUMShuffleMask(ShuffleVectorSDNode *N, unsigned ShuffleKind, return true; } +/// isVPKUDUMShuffleMask - Return true if this is the shuffle mask for a +/// VPKUDUM instruction. +/// The ShuffleKind distinguishes between big-endian operations with +/// two different inputs (0), either-endian operations with two identical +/// inputs (1), and little-endian operations with two different inputs (2). +/// For the latter, the input operands are swapped (see PPCInstrAltivec.td). +bool PPC::isVPKUDUMShuffleMask(ShuffleVectorSDNode *N, unsigned ShuffleKind, + SelectionDAG &DAG) { + bool IsLE = DAG.getTarget().getDataLayout()->isLittleEndian(); + if (ShuffleKind == 0) { + if (IsLE) + return false; + for (unsigned i = 0; i != 16; i += 4) + if (!isConstantOrUndef(N->getMaskElt(i ), i*2+4) || + !isConstantOrUndef(N->getMaskElt(i+1), i*2+5) || + !isConstantOrUndef(N->getMaskElt(i+2), i*2+6) || + !isConstantOrUndef(N->getMaskElt(i+3), i*2+7)) + return false; + } else if (ShuffleKind == 2) { + if (!IsLE) + return false; + for (unsigned i = 0; i != 16; i += 4) + if (!isConstantOrUndef(N->getMaskElt(i ), i*2) || + !isConstantOrUndef(N->getMaskElt(i+1), i*2+1) || + !isConstantOrUndef(N->getMaskElt(i+2), i*2+2) || + !isConstantOrUndef(N->getMaskElt(i+3), i*2+3)) + return false; + } else if (ShuffleKind == 1) { + unsigned j = IsLE ? 0 : 4; + for (unsigned i = 0; i != 8; i += 4) + if (!isConstantOrUndef(N->getMaskElt(i ), i*2+j) || + !isConstantOrUndef(N->getMaskElt(i+1), i*2+j+1) || + !isConstantOrUndef(N->getMaskElt(i+2), i*2+j+2) || + !isConstantOrUndef(N->getMaskElt(i+3), i*2+j+3) || + !isConstantOrUndef(N->getMaskElt(i+8), i*2+j) || + !isConstantOrUndef(N->getMaskElt(i+9), i*2+j+1) || + !isConstantOrUndef(N->getMaskElt(i+10), i*2+j+2) || + !isConstantOrUndef(N->getMaskElt(i+11), i*2+j+3)) + return false; + } + return true; +} + /// isVMerge - Common function, used to match vmrg* shuffles. /// static bool isVMerge(ShuffleVectorSDNode *N, unsigned UnitSize, @@ -6993,6 +7036,7 @@ SDValue PPCTargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, PPC::isSplatShuffleMask(SVOp, 4) || PPC::isVPKUWUMShuffleMask(SVOp, 1, DAG) || PPC::isVPKUHUMShuffleMask(SVOp, 1, DAG) || + PPC::isVPKUDUMShuffleMask(SVOp, 1, DAG) || PPC::isVSLDOIShuffleMask(SVOp, 1, DAG) != -1 || PPC::isVMRGLShuffleMask(SVOp, 1, 1, DAG) || PPC::isVMRGLShuffleMask(SVOp, 2, 1, DAG) || @@ -7010,6 +7054,7 @@ SDValue PPCTargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, unsigned int ShuffleKind = isLittleEndian ? 2 : 0; if (PPC::isVPKUWUMShuffleMask(SVOp, ShuffleKind, DAG) || PPC::isVPKUHUMShuffleMask(SVOp, ShuffleKind, DAG) || + PPC::isVPKUDUMShuffleMask(SVOp, ShuffleKind, DAG) || PPC::isVSLDOIShuffleMask(SVOp, ShuffleKind, DAG) != -1 || PPC::isVMRGLShuffleMask(SVOp, 1, ShuffleKind, DAG) || PPC::isVMRGLShuffleMask(SVOp, 2, ShuffleKind, DAG) || |
