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Fix another fixme: factor out the constant fp generation code. 

llvm-svn: 21207
This commit is contained in:
Nate Begeman 2005-04-10 06:06:10 +00:00
parent 941a01802f
commit 492370311d
1 changed files with 2 additions and 17 deletions
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19
llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
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@ -1305,21 +1305,12 @@ unsigned ISel::SelectExprFP(SDOperand N, unsigned Result)
Tmp1 = SelectExpr(N.getOperand(0)); // Get the operand register Tmp1 = SelectExpr(N.getOperand(0)); // Get the operand register
Tmp2 = MakeReg(MVT::f64); // temp reg to load the integer value into Tmp2 = MakeReg(MVT::f64); // temp reg to load the integer value into
Tmp3 = MakeReg(MVT::i32); // temp reg to hold the conversion constant Tmp3 = MakeReg(MVT::i32); // temp reg to hold the conversion constant
unsigned ConstF = MakeReg(MVT::f64); // temp reg to hold the fp constant
int FrameIdx = BB->getParent()->getFrameInfo()->CreateStackObject(8, 8); int FrameIdx = BB->getParent()->getFrameInfo()->CreateStackObject(8, 8);
MachineConstantPool *CP = BB->getParent()->getConstantPool(); MachineConstantPool *CP = BB->getParent()->getConstantPool();
// FIXME: pull this FP constant generation stuff out into something like
// the simple ISel's getReg.
if (IsUnsigned) { if (IsUnsigned) {
ConstantFP *CFP = ConstantFP::get(Type::DoubleTy, 0x1.000000p52); unsigned ConstF = getConstDouble(0x1.000000p52);
unsigned CPI = CP->getConstantPoolIndex(CFP);
// Load constant fp value
unsigned Tmp4 = MakeReg(MVT::i32);
BuildMI(BB, PPC::LOADHiAddr, 2, Tmp4).addReg(getGlobalBaseReg())
.addConstantPoolIndex(CPI);
BuildMI(BB, PPC::LFD, 2, ConstF).addConstantPoolIndex(CPI).addReg(Tmp4);
// Store the hi & low halves of the fp value, currently in int regs // Store the hi & low halves of the fp value, currently in int regs
BuildMI(BB, PPC::LIS, 1, Tmp3).addSImm(0x4330); BuildMI(BB, PPC::LIS, 1, Tmp3).addSImm(0x4330);
addFrameReference(BuildMI(BB, PPC::STW, 3).addReg(Tmp3), FrameIdx); addFrameReference(BuildMI(BB, PPC::STW, 3).addReg(Tmp3), FrameIdx);
@ -1328,14 +1319,8 @@ unsigned ISel::SelectExprFP(SDOperand N, unsigned Result)
// Generate the return value with a subtract // Generate the return value with a subtract
BuildMI(BB, PPC::FSUB, 2, Result).addReg(Tmp2).addReg(ConstF); BuildMI(BB, PPC::FSUB, 2, Result).addReg(Tmp2).addReg(ConstF);
} else { } else {
ConstantFP *CFP = ConstantFP::get(Type::DoubleTy, 0x1.000008p52); unsigned ConstF = getConstDouble(0x1.000008p52);
unsigned CPI = CP->getConstantPoolIndex(CFP);
// Load constant fp value
unsigned Tmp4 = MakeReg(MVT::i32);
unsigned TmpL = MakeReg(MVT::i32); unsigned TmpL = MakeReg(MVT::i32);
BuildMI(BB, PPC::LOADHiAddr, 2, Tmp4).addReg(getGlobalBaseReg())
.addConstantPoolIndex(CPI);
BuildMI(BB, PPC::LFD, 2, ConstF).addConstantPoolIndex(CPI).addReg(Tmp4);
// Store the hi & low halves of the fp value, currently in int regs // Store the hi & low halves of the fp value, currently in int regs
BuildMI(BB, PPC::LIS, 1, Tmp3).addSImm(0x4330); BuildMI(BB, PPC::LIS, 1, Tmp3).addSImm(0x4330);
addFrameReference(BuildMI(BB, PPC::STW, 3).addReg(Tmp3), FrameIdx); addFrameReference(BuildMI(BB, PPC::STW, 3).addReg(Tmp3), FrameIdx);