Target/SystemZ/SystemZISelLowering.cpp

1002 // value in CCMask and a 0 when CC has a value in CCValid & ~CCMask.
1004 static IPMConversion getIPMConversion(unsigned CCValid, unsigned CCMask) {
1007   if (CCMask == (CCValid & (SystemZ::CCMASK_1 | SystemZ::CCMASK_3)))
1009   if (CCMask == (CCValid & (SystemZ::CCMASK_2 | SystemZ::CCMASK_3)))
1020   if (CCMask == (CCValid & SystemZ::CCMASK_0))
1022   if (CCMask == (CCValid & (SystemZ::CCMASK_0 | SystemZ::CCMASK_1)))
1024   if (CCMask == (CCValid & (SystemZ::CCMASK_0
1028   if (CCMask == (CCValid & SystemZ::CCMASK_3))
1030   if (CCMask == (CCValid & (SystemZ::CCMASK_1
1037   if (CCMask == (CCValid & (SystemZ::CCMASK_0 | SystemZ::CCMASK_2)))
1042   if (CCMask == (CCValid & (SystemZ::CCMASK_1 | SystemZ::CCMASK_2)))
1044   if (CCMask == (CCValid & (SystemZ::CCMASK_0 | SystemZ::CCMASK_3)))
1050   if (CCMask == (CCValid & SystemZ::CCMASK_1))
1052   if (CCMask == (CCValid & SystemZ::CCMASK_2))
1055   if (CCMask == (CCValid & (SystemZ::CCMASK_0
1059   if (CCMask == (CCValid & (SystemZ::CCMASK_0
1068 // If a comparison described by IsUnsigned, CCMask, CmpOp0 and CmpOp1
1073                           unsigned &CCMask) {
1082   if ((Value == -1 && CCMask == SystemZ::CCMASK_CMP_GT) ||
1083       (Value == -1 && CCMask == SystemZ::CCMASK_CMP_LE) ||
1084       (Value == 1 && CCMask == SystemZ::CCMASK_CMP_LT) ||
1085       (Value == 1 && CCMask == SystemZ::CCMASK_CMP_GE)) {
1086     CCMask ^= SystemZ::CCMASK_CMP_EQ;
1091 // If a comparison described by IsUnsigned, CCMask, CmpOp0 and CmpOp1
1095                              unsigned &CCMask) {
1122     else if (CCMask == SystemZ::CCMASK_CMP_EQ ||
1123              CCMask == SystemZ::CCMASK_CMP_NE)
1131       // Adjust CCMask and Value as necessary.
1132       if (Value == 0 && CCMask == SystemZ::CCMASK_CMP_LT)
1134         Value = 127, CCMask = SystemZ::CCMASK_CMP_GT, IsUnsigned = true;
1135       else if (Value == 0 && CCMask == SystemZ::CCMASK_CMP_GE)
1137         Value = 128, CCMask = SystemZ::CCMASK_CMP_LT, IsUnsigned = true;
1251 // CCMask says which comparison result is being tested and BitSize is
1254 static unsigned getTestUnderMaskCond(unsigned BitSize, unsigned CCMask,
1275     if (CCMask == SystemZ::CCMASK_CMP_EQ)
1277     if (CCMask == SystemZ::CCMASK_CMP_NE)
1281     if (CCMask == SystemZ::CCMASK_CMP_LT)
1283     if (CCMask == SystemZ::CCMASK_CMP_GE)
1287     if (CCMask == SystemZ::CCMASK_CMP_LE)
1289     if (CCMask == SystemZ::CCMASK_CMP_GT)
1295     if (CCMask == SystemZ::CCMASK_CMP_EQ)
1297     if (CCMask == SystemZ::CCMASK_CMP_NE)
1301     if (CCMask == SystemZ::CCMASK_CMP_GT)
1303     if (CCMask == SystemZ::CCMASK_CMP_LE)
1307     if (CCMask == SystemZ::CCMASK_CMP_GE)
1309     if (CCMask == SystemZ::CCMASK_CMP_LT)
1315     if (CCMask == SystemZ::CCMASK_CMP_LE)
1317     if (CCMask == SystemZ::CCMASK_CMP_GT)
1321     if (CCMask == SystemZ::CCMASK_CMP_LT)
1323     if (CCMask == SystemZ::CCMASK_CMP_GE)
1330     if (CCMask == SystemZ::CCMASK_CMP_EQ && CmpVal == Low)
1332     if (CCMask == SystemZ::CCMASK_CMP_NE && CmpVal == Low)
1334     if (CCMask == SystemZ::CCMASK_CMP_EQ && CmpVal == High)
1336     if (CCMask == SystemZ::CCMASK_CMP_NE && CmpVal == High)
1346 // tested is as described by CCValid and CCMask.  Update the arguments
1350                                    unsigned &CCValid, unsigned &CCMask,
1375       (NewCCMask = getTestUnderMaskCond(BitSize, CCMask, MaskVal >> ShiftVal,
1383              (NewCCMask = getTestUnderMaskCond(BitSize, CCMask,
1390     NewCCMask = getTestUnderMaskCond(BitSize, CCMask, MaskVal, CmpVal,
1403   CCMask = NewCCMask;
1408 // 2-bit results and CCMask to the subset of those results that are
1413                        unsigned &CCMask) {
1415   CCMask = CCMaskForCondCode(Cond);
1421     IsUnsigned = CCMask & SystemZ::CCMASK_CMP_UO;
1423     CCMask &= CCValid;
1424     adjustZeroCmp(DAG, IsUnsigned, CmpOp0, CmpOp1, CCMask);
1425     adjustSubwordCmp(DAG, IsUnsigned, CmpOp0, CmpOp1, CCMask);
1432     if (CCMask == SystemZ::CCMASK_CMP_EQ ||
1433         CCMask == SystemZ::CCMASK_CMP_NE ||
1444     CCMask = ((CCMask & SystemZ::CCMASK_CMP_EQ) |
1445               (CCMask & SystemZ::CCMASK_CMP_GT ? SystemZ::CCMASK_CMP_LT : 0) |
1446               (CCMask & SystemZ::CCMASK_CMP_LT ? SystemZ::CCMASK_CMP_GT : 0) |
1447               (CCMask & SystemZ::CCMASK_CMP_UO));
1450   adjustForTestUnderMask(DAG, Opcode, CmpOp0, CmpOp1, CCValid, CCMask,
1496   unsigned CCValid, CCMask;
1497   SDValue Glue = emitCmp(TM, DAG, DL, CmpOp0, CmpOp1, CC, CCValid, CCMask);
1499   IPMConversion Conversion = getIPMConversion(CCValid, CCMask);
1527   unsigned CCValid, CCMask;
1528   SDValue Flags = emitCmp(TM, DAG, DL, CmpOp0, CmpOp1, CC, CCValid, CCMask);
1531                      DAG.getConstant(CCMask, MVT::i32), Dest, Flags);
1543   unsigned CCValid, CCMask;
1544   SDValue Flags = emitCmp(TM, DAG, DL, CmpOp0, CmpOp1, CC, CCValid, CCMask);
1550   Ops.push_back(DAG.getConstant(CCMask, MVT::i32));
2290   unsigned CCMask   = MI->getOperand(4).getImm();
2298   //   BRC CCMask, JoinMBB
2302     .addImm(CCValid).addImm(CCMask).addMBB(JoinMBB);
2339   unsigned CCMask     = MI->getOperand(5).getImm();
2349       CCMask ^= CCValid;
2352       .addImm(CCValid).addImm(CCMask);
2359     CCMask ^= CCValid;
2366   //   BRC CCMask, JoinMBB
2370     .addImm(CCValid).addImm(CCMask).addMBB(JoinMBB);