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fix f32 setcc, and fp select

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20050 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth
2005-02-05 16:41:03 +00:00
parent 9818c05bb8
commit d4bdd548fc
2 changed files with 99 additions and 72 deletions
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155
lib/Target/Alpha/AlphaISelPattern.cpp
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@@ -65,8 +65,6 @@ namespace {
setOperationAction(ISD::MEMSET , MVT::Other, Expand);
setOperationAction(ISD::MEMCPY , MVT::Other, Expand);
setOperationAction(ISD::SETCC , MVT::f32 , Promote);
computeRegisterProperties();
addLegalFPImmediate(+0.0); //F31
@@ -319,8 +317,18 @@ unsigned ISel::SelectExprFP(SDOperand N, unsigned Result)
Tmp1 = SelectExpr(N.getOperand(0)); //Cond
Tmp2 = SelectExpr(N.getOperand(1)); //Use if TRUE
Tmp3 = SelectExpr(N.getOperand(2)); //Use if FALSE
// Spill the cond to memory and reload it from there.
unsigned Size = MVT::getSizeInBits(MVT::f64)/8;
MachineFunction *F = BB->getParent();
int FrameIdx = F->getFrameInfo()->CreateStackObject(Size, 8);
unsigned Tmp4 = MakeReg(MVT::f64);
BuildMI(BB, Alpha::STQ, 3).addReg(Tmp1).addFrameIndex(FrameIdx).addReg(Alpha::F31);
BuildMI(BB, Alpha::LDT, 2, Tmp4).addFrameIndex(FrameIdx).addReg(Alpha::F31);
//now ideally, we don't have to do anything to the flag...
// Get the condition into the zero flag.
BuildMI(BB, Alpha::CMOVEQ, 2, Result).addReg(Tmp2).addReg(Tmp3).addReg(Tmp1);
BuildMI(BB, Alpha::FCMOVEQ, 2, Result).addReg(Tmp2).addReg(Tmp3).addReg(Tmp4);
return Result;
}
@@ -367,27 +375,27 @@ unsigned ISel::SelectExprFP(SDOperand N, unsigned Result)
SDOperand Address = N.getOperand(1);
if (Address.getOpcode() == ISD::GlobalAddress)
{
Select(Chain);
AlphaLowering.restoreGP(BB);
Opc = DestType == MVT::f64 ? Alpha::LDT_SYM : Alpha::LDS_SYM;
BuildMI(BB, Opc, 1, Result).addGlobalAddress(cast<GlobalAddressSDNode>(Address)->getGlobal());
}
{
Select(Chain);
AlphaLowering.restoreGP(BB);
Opc = DestType == MVT::f64 ? Alpha::LDT_SYM : Alpha::LDS_SYM;
BuildMI(BB, Opc, 1, Result).addGlobalAddress(cast<GlobalAddressSDNode>(Address)->getGlobal());
}
else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Address)) {
AlphaLowering.restoreGP(BB);
if (DestType == MVT::f64) {
BuildMI(BB, Alpha::LDT_SYM, 1, Result).addConstantPoolIndex(CP->getIndex());
} else {
BuildMI(BB, Alpha::LDS_SYM, 1, Result).addConstantPoolIndex(CP->getIndex());
}
AlphaLowering.restoreGP(BB);
if (DestType == MVT::f64) {
BuildMI(BB, Alpha::LDT_SYM, 1, Result).addConstantPoolIndex(CP->getIndex());
} else {
BuildMI(BB, Alpha::LDS_SYM, 1, Result).addConstantPoolIndex(CP->getIndex());
}
}
else
{
Select(Chain);
Tmp2 = SelectExpr(Address);
Opc = DestType == MVT::f64 ? Alpha::LDT : Alpha::LDS;
BuildMI(BB, Opc, 2, Result).addImm(0).addReg(Tmp2);
}
{
Select(Chain);
Tmp2 = SelectExpr(Address);
Opc = DestType == MVT::f64 ? Alpha::LDT : Alpha::LDS;
BuildMI(BB, Opc, 2, Result).addImm(0).addReg(Tmp2);
}
return Result;
}
case ISD::ConstantFP:
@@ -874,53 +882,68 @@ unsigned ISel::SelectExpr(SDOperand N) {
Tmp2 = SelectExpr(N.getOperand(1));
BuildMI(BB, Alpha::CMPEQ, 2, Result).addReg(Tmp1).addReg(Tmp2);
}
}
} else {
bool rev = false;
bool inv = false;
switch (SetCC->getCondition()) {
default: Node->dump(); assert(0 && "Unknown FP comparison!");
case ISD::SETEQ: Opc = Alpha::CMPTEQ; break;
case ISD::SETLT: Opc = Alpha::CMPTLT; break;
case ISD::SETLE: Opc = Alpha::CMPTLE; break;
case ISD::SETGT: Opc = Alpha::CMPTLT; rev = true; break;
case ISD::SETGE: Opc = Alpha::CMPTLE; rev = true; break;
case ISD::SETNE: Opc = Alpha::CMPTEQ; inv = true; break;
}
}
} else {
//assert(SetCC->getOperand(0).getValueType() != MVT::f32 && "SetCC f32 should have been promoted");
bool rev = false;
bool inv = false;
switch (SetCC->getCondition()) {
default: Node->dump(); assert(0 && "Unknown FP comparison!");
case ISD::SETEQ: Opc = Alpha::CMPTEQ; break;
case ISD::SETLT: Opc = Alpha::CMPTLT; break;
case ISD::SETLE: Opc = Alpha::CMPTLE; break;
case ISD::SETGT: Opc = Alpha::CMPTLT; rev = true; break;
case ISD::SETGE: Opc = Alpha::CMPTLE; rev = true; break;
case ISD::SETNE: Opc = Alpha::CMPTEQ; inv = true; break;
}
Tmp1 = SelectExpr(N.getOperand(0));
Tmp2 = SelectExpr(N.getOperand(1));
//Can only compare doubles, and dag won't promote for me
if (SetCC->getOperand(0).getValueType() == MVT::f32)
{
Tmp3 = MakeReg(MVT::f64);
BuildMI(BB, Alpha::CVTST, 1, Tmp3).addReg(Tmp1);
Tmp1 = Tmp3;
}
if (SetCC->getOperand(1).getValueType() == MVT::f32)
{
Tmp3 = MakeReg(MVT::f64);
BuildMI(BB, Alpha::CVTST, 1, Tmp3).addReg(Tmp2);
Tmp1 = Tmp2;
}
Tmp1 = SelectExpr(N.getOperand(0));
Tmp2 = SelectExpr(N.getOperand(1));
if (rev) std::swap(Tmp1, Tmp2);
Tmp3 = MakeReg(MVT::f64);
//do the comparison
BuildMI(BB, Opc, 2, Tmp3).addReg(Tmp1).addReg(Tmp2);
//now arrange for Result (int) to have a 1 or 0
// Spill the FP to memory and reload it from there.
unsigned Size = MVT::getSizeInBits(MVT::f64)/8;
MachineFunction *F = BB->getParent();
int FrameIdx = F->getFrameInfo()->CreateStackObject(Size, 8);
unsigned Tmp4 = MakeReg(MVT::f64);
BuildMI(BB, Alpha::CVTTQ, 1, Tmp4).addReg(Tmp3);
BuildMI(BB, Alpha::STT, 3).addReg(Tmp4).addFrameIndex(FrameIdx).addReg(Alpha::F31);
unsigned Tmp5 = MakeReg(MVT::i64);
BuildMI(BB, Alpha::LDQ, 2, Tmp5).addFrameIndex(FrameIdx).addReg(Alpha::F31);
if (rev) std::swap(Tmp1, Tmp2);
Tmp3 = MakeReg(MVT::f64);
//do the comparison
BuildMI(BB, Opc, 2, Tmp3).addReg(Tmp1).addReg(Tmp2);
//now arrange for Result (int) to have a 1 or 0
// Spill the FP to memory and reload it from there.
unsigned Size = MVT::getSizeInBits(MVT::f64)/8;
MachineFunction *F = BB->getParent();
int FrameIdx = F->getFrameInfo()->CreateStackObject(Size, 8);
unsigned Tmp4 = MakeReg(MVT::f64);
BuildMI(BB, Alpha::CVTTQ, 1, Tmp4).addReg(Tmp3);
BuildMI(BB, Alpha::STT, 3).addReg(Tmp4).addFrameIndex(FrameIdx).addReg(Alpha::F31);
unsigned Tmp5 = MakeReg(MVT::i64);
BuildMI(BB, Alpha::LDQ, 2, Tmp5).addFrameIndex(FrameIdx).addReg(Alpha::F31);
//now, set result based on Tmp5
//Set Tmp6 if fp cmp was false
unsigned Tmp6 = MakeReg(MVT::i64);
BuildMI(BB, Alpha::CMPEQ, 2, Tmp6).addReg(Tmp5).addReg(Alpha::R31);
//and invert
BuildMI(BB, Alpha::CMPEQ, 2, Result).addReg(Tmp6).addReg(Alpha::R31);
}
// else
// {
// Node->dump();
// assert(0 && "Not a setcc in setcc");
// }
//now, set result based on Tmp5
//Set Tmp6 if fp cmp was false
unsigned Tmp6 = MakeReg(MVT::i64);
BuildMI(BB, Alpha::CMPEQ, 2, Tmp6).addReg(Tmp5).addReg(Alpha::R31);
//and invert
BuildMI(BB, Alpha::CMPEQ, 2, Result).addReg(Tmp6).addReg(Alpha::R31);
}
// else
// {
// Node->dump();
// assert(0 && "Not a setcc in setcc");
// }
}
return Result;
}