Lines Matching defs:UsefulBits

2849 static void getUsefulBits(SDValue Op, APInt &UsefulBits, unsigned Depth = 0);
2851 static void getUsefulBitsFromAndWithImmediate(SDValue Op, APInt &UsefulBits,
2855   Imm = AArch64_AM::decodeLogicalImmediate(Imm, UsefulBits.getBitWidth());
2856   UsefulBits &= APInt(UsefulBits.getBitWidth(), Imm);
2857   getUsefulBits(Op, UsefulBits, Depth + 1);
2860 static void getUsefulBitsFromBitfieldMoveOpd(SDValue Op, APInt &UsefulBits,
2864   APInt OpUsefulBits(UsefulBits);
2884   UsefulBits &= OpUsefulBits;
2887 static void getUsefulBitsFromUBFM(SDValue Op, APInt &UsefulBits,
2894   getUsefulBitsFromBitfieldMoveOpd(Op, UsefulBits, Imm, MSB, Depth);
2897 static void getUsefulBitsFromOrWithShiftedReg(SDValue Op, APInt &UsefulBits,
2901   APInt Mask(UsefulBits);
2922   UsefulBits &= Mask;
2925 static void getUsefulBitsFromBFM(SDValue Op, SDValue Orig, APInt &UsefulBits,
2932   APInt OpUsefulBits(UsefulBits);
2935   APInt ResultUsefulBits(UsefulBits.getBitWidth(), 0);
2937   APInt Mask(UsefulBits.getBitWidth(), 0);
2961     uint64_t LSB = UsefulBits.getBitWidth() - Imm;
2977   UsefulBits &= Mask;
2980 static void getUsefulBitsForUse(SDNode *UserNode, APInt &UsefulBits,
2996     return getUsefulBitsFromAndWithImmediate(SDValue(UserNode, 0), UsefulBits,
3000     return getUsefulBitsFromUBFM(SDValue(UserNode, 0), UsefulBits, Depth);
3005       getUsefulBitsFromOrWithShiftedReg(SDValue(UserNode, 0), UsefulBits,
3010     return getUsefulBitsFromBFM(SDValue(UserNode, 0), Orig, UsefulBits, Depth);
3016     UsefulBits &= APInt(UsefulBits.getBitWidth(), 0xff);
3023     UsefulBits &= APInt(UsefulBits.getBitWidth(), 0xffff);
3028 static void getUsefulBits(SDValue Op, APInt &UsefulBits, unsigned Depth) {
3031   // Initialize UsefulBits
3035     UsefulBits = APInt(Bitwidth, 0);
3036     UsefulBits.flipAllBits();
3038   APInt UsersUsefulBits(UsefulBits.getBitWidth(), 0);
3042     APInt UsefulBitsForUse = APInt(UsefulBits);
3046   // UsefulBits contains the produced bits that are meaningful for the
3049   UsefulBits &= UsersUsefulBits;
3555 static bool tryBitfieldInsertOpFromOr(SDNode *N, const APInt &UsefulBits,
3568   unsigned NumberOfIgnoredLowBits = UsefulBits.countr_zero();
3569   unsigned NumberOfIgnoredHighBits = UsefulBits.countl_zero();