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int comparison patterns 

llvm-svn: 24020
This commit is contained in:
Andrew Lenharth 2005-10-26 18:44:45 +00:00
parent 3c7974aade
commit 381cab36ed
2 changed files with 48 additions and 40 deletions
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28
llvm/lib/Target/Alpha/AlphaISelDAGToDAG.cpp
View File

@ -111,34 +111,6 @@ SDOperand AlphaDAGToDAGISel::Select(SDOperand Op) {
case ISD::DYNAMIC_STACKALLOC:
assert(0 && "You want these too?");
case ISD::SETCC: {
ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(2))->get();
assert(MVT::isInteger(N->getOperand(0).getValueType()) && "FP numbers are unnecessary");
SDOperand Op1 = Select(N->getOperand(0));
SDOperand Op2 = Select(N->getOperand(1));
unsigned Opc = Alpha::WTF;
int dir;
switch (CC) {
default: N->dump(); assert(0 && "Unknown integer comparison!");
case ISD::SETEQ: Opc = Alpha::CMPEQ; dir=1; break;
case ISD::SETLT: Opc = Alpha::CMPLT; dir = 1; break;
case ISD::SETLE: Opc = Alpha::CMPLE; dir = 1; break;
case ISD::SETGT: Opc = Alpha::CMPLT; dir = 0; break;
case ISD::SETGE: Opc = Alpha::CMPLE; dir = 0; break;
case ISD::SETULT: Opc = Alpha::CMPULT; dir = 1; break;
case ISD::SETUGT: Opc = Alpha::CMPULT; dir = 0; break;
case ISD::SETULE: Opc = Alpha::CMPULE; dir = 1; break;
case ISD::SETUGE: Opc = Alpha::CMPULE; dir = 0; break;
case ISD::SETNE: {//Handle this one special
SDOperand Tmp = CurDAG->getTargetNode(Alpha::CMPEQ, MVT::i64, Op1, Op2);
CurDAG->SelectNodeTo(N, Alpha::CMPEQ, MVT::i64, CurDAG->getRegister(Alpha::R31, MVT::i64), Tmp);
return SDOperand(N, 0);
}
}
CurDAG->SelectNodeTo(N, Opc, MVT::i64, dir ? Op1 : Op2, dir ? Op2 : Op1);
return SDOperand(N, 0);
}
case ISD::BRCOND: {
SDOperand Chain = Select(N->getOperand(0));
SDOperand CC = Select(N->getOperand(1));

60
llvm/lib/Target/Alpha/AlphaInstrInfo.td
View File

@ -308,18 +308,54 @@ def ZAPNOTi : OFormL<0x12, 0x31, "zapnot $RA,$L,$RC",
[(set GPRC:$RC, (and GPRC:$RA, immZAP:$L))]>;
//Comparison, int
def CMPBGE : OForm< 0x10, 0x0F, "cmpbge $RA,$RB,$RC", []>; //Compare byte
def CMPBGEi : OFormL<0x10, 0x0F, "cmpbge $RA,$L,$RC", []>; //Compare byte
def CMPEQ : OForm< 0x10, 0x2D, "cmpeq $RA,$RB,$RC", []>; //Compare signed quadword equal
def CMPEQi : OFormL<0x10, 0x2D, "cmpeq $RA,$L,$RC", []>; //Compare signed quadword equal
def CMPLE : OForm< 0x10, 0x6D, "cmple $RA,$RB,$RC", []>; //Compare signed quadword less than or equal
def CMPLEi : OFormL<0x10, 0x6D, "cmple $RA,$L,$RC", []>; //Compare signed quadword less than or equal
def CMPLT : OForm< 0x10, 0x4D, "cmplt $RA,$RB,$RC", []>; //Compare signed quadword less than
def CMPLTi : OFormL<0x10, 0x4D, "cmplt $RA,$L,$RC", []>; //Compare signed quadword less than
def CMPULE : OForm< 0x10, 0x3D, "cmpule $RA,$RB,$RC", []>; //Compare unsigned quadword less than or equal
def CMPULEi : OFormL<0x10, 0x3D, "cmpule $RA,$L,$RC", []>; //Compare unsigned quadword less than or equal
def CMPULT : OForm< 0x10, 0x1D, "cmpult $RA,$RB,$RC", []>; //Compare unsigned quadword less than
def CMPULTi : OFormL<0x10, 0x1D, "cmpult $RA,$L,$RC", []>; //Compare unsigned quadword less than
//So this is a waste of what this instruction can do, but it still saves something
def CMPBGE : OForm< 0x10, 0x0F, "cmpbge $RA,$RB,$RC",
[(set GPRC:$RC, (setuge (and GPRC:$RA, 255), (and GPRC:$RB, 255)))]>;
def CMPBGEi : OFormL<0x10, 0x0F, "cmpbge $RA,$L,$RC",
[(set GPRC:$RC, (setuge (and GPRC:$RA, 255), immUExt8:$L))]>;
def CMPEQ : OForm< 0x10, 0x2D, "cmpeq $RA,$RB,$RC",
[(set GPRC:$RC, (seteq GPRC:$RA, GPRC:$RB))]>;
def CMPEQi : OFormL<0x10, 0x2D, "cmpeq $RA,$L,$RC",
[(set GPRC:$RC, (seteq GPRC:$RA, immUExt8:$L))]>;
def CMPLE : OForm< 0x10, 0x6D, "cmple $RA,$RB,$RC",
[(set GPRC:$RC, (setle GPRC:$RA, GPRC:$RB))]>;
def CMPLEi : OFormL<0x10, 0x6D, "cmple $RA,$L,$RC",
[(set GPRC:$RC, (setle GPRC:$RA, immUExt8:$L))]>;
def CMPLT : OForm< 0x10, 0x4D, "cmplt $RA,$RB,$RC",
[(set GPRC:$RC, (setlt GPRC:$RA, GPRC:$RB))]>;
def CMPLTi : OFormL<0x10, 0x4D, "cmplt $RA,$L,$RC",
[(set GPRC:$RC, (setlt GPRC:$RA, immUExt8:$L))]>;
def CMPULE : OForm< 0x10, 0x3D, "cmpule $RA,$RB,$RC",
[(set GPRC:$RC, (setule GPRC:$RA, GPRC:$RB))]>;
def CMPULEi : OFormL<0x10, 0x3D, "cmpule $RA,$L,$RC",
[(set GPRC:$RC, (setule GPRC:$RA, immUExt8:$L))]>;
def CMPULT : OForm< 0x10, 0x1D, "cmpult $RA,$RB,$RC",
[(set GPRC:$RC, (setlt GPRC:$RA, GPRC:$RB))]>;
def CMPULTi : OFormL<0x10, 0x1D, "cmpult $RA,$L,$RC",
[(set GPRC:$RC, (setlt GPRC:$RA, immUExt8:$L))]>;
//Patterns for unsupported int comparisons
def : Pat<(setueq GPRC:$X, GPRC:$Y), (CMPEQ GPRC:$X, GPRC:$Y)>;
def : Pat<(setueq GPRC:$X, immUExt8:$Y), (CMPEQi GPRC:$X, immUExt8:$Y)>;
def : Pat<(setugt GPRC:$X, GPRC:$Y), (CMPULT GPRC:$Y, GPRC:$X)>;
def : Pat<(setugt immUExt8:$X, GPRC:$Y), (CMPULTi GPRC:$Y, immUExt8:$X)>;
def : Pat<(setuge GPRC:$X, GPRC:$Y), (CMPULE GPRC:$Y, GPRC:$X)>;
def : Pat<(setuge immUExt8:$X, GPRC:$Y), (CMPULEi GPRC:$Y, immUExt8:$X)>;
def : Pat<(setgt GPRC:$X, GPRC:$Y), (CMPLT GPRC:$Y, GPRC:$X)>;
def : Pat<(setgt immUExt8:$X, GPRC:$Y), (CMPLTi GPRC:$Y, immUExt8:$X)>;
def : Pat<(setge GPRC:$X, GPRC:$Y), (CMPLE GPRC:$Y, GPRC:$X)>;
def : Pat<(setge immUExt8:$X, GPRC:$Y), (CMPLEi GPRC:$Y, immUExt8:$X)>;
def : Pat<(setne GPRC:$X, GPRC:$Y), (CMPEQi (CMPEQ GPRC:$X, GPRC:$Y), 0)>;
def : Pat<(setne GPRC:$X, immUExt8:$Y), (CMPEQi (CMPEQi GPRC:$X, immUExt8:$Y), 0)>;
def : Pat<(setune GPRC:$X, GPRC:$Y), (CMPEQi (CMPEQ GPRC:$X, GPRC:$Y), 0)>;
def : Pat<(setune GPRC:$X, immUExt8:$Y), (CMPEQi (CMPEQ GPRC:$X, immUExt8:$Y), 0)>;
//Comparison, FP
def CMPTEQ : FPForm<0x16, 0x5A5, "cmpteq/su $RA,$RB,$RC">; //Compare T_floating equal