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Implement not, nor, nand, and eqv


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21060 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2005-04-03 11:20:20 +00:00
parent 10c085b525
commit aa73a9f16f
1 changed files with 51 additions and 10 deletions
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61
lib/Target/PowerPC/PPCISelPattern.cpp
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@ -409,7 +409,7 @@ LowerFrameReturnAddress(bool isFrameAddress, SDOperand Chain, unsigned Depth,
}
namespace {
Statistic<>NotLogic("ppc-codegen", "Number of inverted logical ops");
//===--------------------------------------------------------------------===//
/// ISel - PPC32 specific code to select PPC32 machine instructions for
/// SelectionDAG operations.
@ -1195,8 +1195,6 @@ unsigned ISel::SelectExpr(SDOperand N) {
case ISD::AND:
case ISD::OR:
case ISD::XOR:
assert (DestType == MVT::i32 && "Only do arithmetic on i32s!");
Tmp1 = SelectExpr(N.getOperand(0));
switch(canUseAsImmediateForOpcode(N.getOperand(1), opcode, Tmp2)) {
default: assert(0 && "unhandled result code");
@ -1205,7 +1203,6 @@ unsigned ISel::SelectExpr(SDOperand N) {
switch (opcode) {
case ISD::AND: Opc = PPC::AND; break;
case ISD::OR: Opc = PPC::OR; break;
case ISD::XOR: Opc = PPC::XOR; break;
}
BuildMI(BB, Opc, 2, Result).addReg(Tmp1).addReg(Tmp2);
break;
@ -1213,7 +1210,6 @@ unsigned ISel::SelectExpr(SDOperand N) {
switch (opcode) {
case ISD::AND: Opc = PPC::ANDIo; break;
case ISD::OR: Opc = PPC::ORI; break;
case ISD::XOR: Opc = PPC::XORI; break;
}
BuildMI(BB, Opc, 2, Result).addReg(Tmp1).addImm(Tmp2);
break;
@ -1221,15 +1217,63 @@ unsigned ISel::SelectExpr(SDOperand N) {
switch (opcode) {
case ISD::AND: Opc = PPC::ANDISo; break;
case ISD::OR: Opc = PPC::ORIS; break;
case ISD::XOR: Opc = PPC::XORIS; break;
}
BuildMI(BB, Opc, 2, Result).addReg(Tmp1).addImm(Tmp2);
break;
}
return Result;
case ISD::XOR: {
// Check for EQV: xor, (xor a, -1), b
if (N.getOperand(0).getOpcode() == ISD::XOR &&
N.getOperand(0).getOperand(1).getOpcode() == ISD::Constant &&
cast<ConstantSDNode>(N.getOperand(0).getOperand(1))->isAllOnesValue()) {
++NotLogic;
Tmp1 = SelectExpr(N.getOperand(0).getOperand(0));
Tmp2 = SelectExpr(N.getOperand(1));
BuildMI(BB, PPC::EQV, 2, Result).addReg(Tmp1).addReg(Tmp2);
return Result;
}
// Check for NOT, NOR, and NAND: xor (copy, or, and), -1
if (N.getOperand(1).getOpcode() == ISD::Constant &&
cast<ConstantSDNode>(N.getOperand(1))->isAllOnesValue()) {
++NotLogic;
switch(N.getOperand(0).getOpcode()) {
case ISD::OR:
Tmp1 = SelectExpr(N.getOperand(0).getOperand(0));
Tmp2 = SelectExpr(N.getOperand(0).getOperand(1));
BuildMI(BB, PPC::NOR, 2, Result).addReg(Tmp1).addReg(Tmp2);
break;
case ISD::AND:
Tmp1 = SelectExpr(N.getOperand(0).getOperand(0));
Tmp2 = SelectExpr(N.getOperand(0).getOperand(1));
BuildMI(BB, PPC::NAND, 2, Result).addReg(Tmp1).addReg(Tmp2);
break;
default:
Tmp1 = SelectExpr(N.getOperand(0));
BuildMI(BB, PPC::NOR, 2, Result).addReg(Tmp1).addReg(Tmp1);
break;
}
return Result;
}
Tmp1 = SelectExpr(N.getOperand(0));
switch(canUseAsImmediateForOpcode(N.getOperand(1), opcode, Tmp2)) {
default: assert(0 && "unhandled result code");
case 0: // No immediate
Tmp2 = SelectExpr(N.getOperand(1));
BuildMI(BB, PPC::XOR, 2, Result).addReg(Tmp1).addReg(Tmp2);
break;
case 1: // Low immediate
BuildMI(BB, PPC::XORI, 2, Result).addReg(Tmp1).addImm(Tmp2);
break;
case 2: // Shifted immediate
BuildMI(BB, PPC::XORIS, 2, Result).addReg(Tmp1).addImm(Tmp2);
break;
}
return Result;
}
case ISD::SUB:
assert (DestType == MVT::i32 && "Only do arithmetic on i32s!");
Tmp2 = SelectExpr(N.getOperand(1));
if (1 == canUseAsImmediateForOpcode(N.getOperand(0), opcode, Tmp1))
BuildMI(BB, PPC::SUBFIC, 2, Result).addReg(Tmp2).addSImm(Tmp1);
@ -1240,7 +1284,6 @@ unsigned ISel::SelectExpr(SDOperand N) {
return Result;
case ISD::MUL:
assert (DestType == MVT::i32 && "Only do arithmetic on i32s!");
Tmp1 = SelectExpr(N.getOperand(0));
if (1 == canUseAsImmediateForOpcode(N.getOperand(1), opcode, Tmp2))
BuildMI(BB, PPC::MULLI, 2, Result).addReg(Tmp1).addSImm(Tmp2);
@ -1252,7 +1295,6 @@ unsigned ISel::SelectExpr(SDOperand N) {
case ISD::SDIV:
case ISD::UDIV:
assert (DestType == MVT::i32 && "Only do arithmetic on i32s!");
Tmp1 = SelectExpr(N.getOperand(0));
Tmp2 = SelectExpr(N.getOperand(1));
Opc = (ISD::UDIV == opcode) ? PPC::DIVWU : PPC::DIVW;
@ -1261,7 +1303,6 @@ unsigned ISel::SelectExpr(SDOperand N) {
case ISD::UREM:
case ISD::SREM: {
assert (DestType == MVT::i32 && "Only do arithmetic on i32s!");
Tmp1 = SelectExpr(N.getOperand(0));
Tmp2 = SelectExpr(N.getOperand(1));
Tmp3 = MakeReg(MVT::i32);