Lines Matching defs:UsefulBits

2798 static void getUsefulBits(SDValue Op, APInt &UsefulBits, unsigned Depth = 0);
2800 static void getUsefulBitsFromAndWithImmediate(SDValue Op, APInt &UsefulBits,
2804   Imm = AArch64_AM::decodeLogicalImmediate(Imm, UsefulBits.getBitWidth());
2805   UsefulBits &= APInt(UsefulBits.getBitWidth(), Imm);
2806   getUsefulBits(Op, UsefulBits, Depth + 1);
2809 static void getUsefulBitsFromBitfieldMoveOpd(SDValue Op, APInt &UsefulBits,
2813   APInt OpUsefulBits(UsefulBits);
2833   UsefulBits &= OpUsefulBits;
2836 static void getUsefulBitsFromUBFM(SDValue Op, APInt &UsefulBits,
2843   getUsefulBitsFromBitfieldMoveOpd(Op, UsefulBits, Imm, MSB, Depth);
2846 static void getUsefulBitsFromOrWithShiftedReg(SDValue Op, APInt &UsefulBits,
2850   APInt Mask(UsefulBits);
2871   UsefulBits &= Mask;
2874 static void getUsefulBitsFromBFM(SDValue Op, SDValue Orig, APInt &UsefulBits,
2881   APInt OpUsefulBits(UsefulBits);
2884   APInt ResultUsefulBits(UsefulBits.getBitWidth(), 0);
2886   APInt Mask(UsefulBits.getBitWidth(), 0);
2910     uint64_t LSB = UsefulBits.getBitWidth() - Imm;
2926   UsefulBits &= Mask;
2929 static void getUsefulBitsForUse(SDNode *UserNode, APInt &UsefulBits,
2945     return getUsefulBitsFromAndWithImmediate(SDValue(UserNode, 0), UsefulBits,
2949     return getUsefulBitsFromUBFM(SDValue(UserNode, 0), UsefulBits, Depth);
2954       getUsefulBitsFromOrWithShiftedReg(SDValue(UserNode, 0), UsefulBits,
2959     return getUsefulBitsFromBFM(SDValue(UserNode, 0), Orig, UsefulBits, Depth);
2965     UsefulBits &= APInt(UsefulBits.getBitWidth(), 0xff);
2972     UsefulBits &= APInt(UsefulBits.getBitWidth(), 0xffff);
2977 static void getUsefulBits(SDValue Op, APInt &UsefulBits, unsigned Depth) {
2980   // Initialize UsefulBits
2984     UsefulBits = APInt(Bitwidth, 0);
2985     UsefulBits.flipAllBits();
2987   APInt UsersUsefulBits(UsefulBits.getBitWidth(), 0);
2991     APInt UsefulBitsForUse = APInt(UsefulBits);
2995   // UsefulBits contains the produced bits that are meaningful for the
2998   UsefulBits &= UsersUsefulBits;
3504 static bool tryBitfieldInsertOpFromOr(SDNode *N, const APInt &UsefulBits,
3517   unsigned NumberOfIgnoredLowBits = UsefulBits.countr_zero();
3518   unsigned NumberOfIgnoredHighBits = UsefulBits.countl_zero();