#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/InstVisitor.h"
-#include "Support/Debug.h"
-#include "Support/Statistic.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/ADT/Statistic.h"
#include <vector>
using namespace llvm;
}
namespace {
- struct ISel : public FunctionPass, InstVisitor<ISel> {
+ struct PPC64ISel : public FunctionPass, InstVisitor<PPC64ISel> {
PPC64TargetMachine &TM;
MachineFunction *F; // The function we are compiling into
MachineBasicBlock *BB; // The current MBB we are compiling
std::map<Value*, unsigned> RegMap; // Mapping between Values and SSA Regs
// External functions used in the Module
- Function *fmodfFn, *fmodFn, *__cmpdi2Fn, *__moddi3Fn, *__divdi3Fn,
- *__umoddi3Fn, *__udivdi3Fn, *__fixsfdiFn, *__fixdfdiFn, *__fixunssfdiFn,
- *__fixunsdfdiFn, *__floatdisfFn, *__floatdidfFn, *mallocFn, *freeFn;
+ Function *fmodfFn, *fmodFn, *__cmpdi2Fn, *__fixsfdiFn, *__fixdfdiFn,
+ *__fixunssfdiFn, *__fixunsdfdiFn, *mallocFn, *freeFn;
// MBBMap - Mapping between LLVM BB -> Machine BB
std::map<const BasicBlock*, MachineBasicBlock*> MBBMap;
// FrameIndex for the alloca.
std::map<AllocaInst*, unsigned> AllocaMap;
- ISel(TargetMachine &tm) : TM(reinterpret_cast<PPC64TargetMachine&>(tm)),
- F(0), BB(0) {}
+ // Target configuration data
+ const unsigned ParameterSaveAreaOffset, MaxArgumentStackSpace;
+
+ PPC64ISel(TargetMachine &tm):TM(reinterpret_cast<PPC64TargetMachine&>(tm)),
+ F(0), BB(0), ParameterSaveAreaOffset(24), MaxArgumentStackSpace(32) {}
bool doInitialization(Module &M) {
// Add external functions that we may call
fmodFn = M.getOrInsertFunction("fmod", d, d, d, 0);
// int __cmpdi2(long, long);
__cmpdi2Fn = M.getOrInsertFunction("__cmpdi2", i, l, l, 0);
- // long __moddi3(long, long);
- __moddi3Fn = M.getOrInsertFunction("__moddi3", l, l, l, 0);
- // long __divdi3(long, long);
- __divdi3Fn = M.getOrInsertFunction("__divdi3", l, l, l, 0);
- // unsigned long __umoddi3(unsigned long, unsigned long);
- __umoddi3Fn = M.getOrInsertFunction("__umoddi3", ul, ul, ul, 0);
- // unsigned long __udivdi3(unsigned long, unsigned long);
- __udivdi3Fn = M.getOrInsertFunction("__udivdi3", ul, ul, ul, 0);
// long __fixsfdi(float)
__fixsfdiFn = M.getOrInsertFunction("__fixsfdi", l, f, 0);
// long __fixdfdi(double)
__fixunssfdiFn = M.getOrInsertFunction("__fixunssfdi", ul, f, 0);
// unsigned long __fixunsdfdi(double)
__fixunsdfdiFn = M.getOrInsertFunction("__fixunsdfdi", ul, d, 0);
- // float __floatdisf(long)
- __floatdisfFn = M.getOrInsertFunction("__floatdisf", f, l, 0);
- // double __floatdidf(long)
- __floatdidfFn = M.getOrInsertFunction("__floatdidf", d, l, 0);
// void* malloc(size_t)
mallocFn = M.getOrInsertFunction("malloc", voidPtr, Type::UIntTy, 0);
// void free(void*)
/// getReg - This method turns an LLVM value into a register number.
///
-unsigned ISel::getReg(Value *V, MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IPt) {
+unsigned PPC64ISel::getReg(Value *V, MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IPt) {
if (Constant *C = dyn_cast<Constant>(V)) {
unsigned Reg = makeAnotherReg(V->getType());
copyConstantToRegister(MBB, IPt, C, Reg);
/// is okay to use as an immediate argument to a certain binary operator.
///
/// Operator is one of: 0 for Add, 1 for Sub, 2 for And, 3 for Or, 4 for Xor.
-bool ISel::canUseAsImmediateForOpcode(ConstantInt *CI, unsigned Operator) {
+bool PPC64ISel::canUseAsImmediateForOpcode(ConstantInt *CI, unsigned Operator) {
ConstantSInt *Op1Cs;
ConstantUInt *Op1Cu;
/// getFixedSizedAllocaFI - Return the frame index for a fixed sized alloca
/// that is to be statically allocated with the initial stack frame
/// adjustment.
-unsigned ISel::getFixedSizedAllocaFI(AllocaInst *AI) {
+unsigned PPC64ISel::getFixedSizedAllocaFI(AllocaInst *AI) {
// Already computed this?
std::map<AllocaInst*, unsigned>::iterator I = AllocaMap.lower_bound(AI);
if (I != AllocaMap.end() && I->first == AI) return I->second;
/// copyConstantToRegister - Output the instructions required to put the
/// specified constant into the specified register.
///
-void ISel::copyConstantToRegister(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- Constant *C, unsigned R) {
+void PPC64ISel::copyConstantToRegister(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Constant *C, unsigned R) {
if (C->getType()->isIntegral()) {
unsigned Class = getClassB(C->getType());
/// LoadArgumentsToVirtualRegs - Load all of the arguments to this function from
/// the stack into virtual registers.
-void ISel::LoadArgumentsToVirtualRegs(Function &Fn) {
- unsigned ArgOffset = 24;
+void PPC64ISel::LoadArgumentsToVirtualRegs(Function &Fn) {
+ unsigned ArgOffset = ParameterSaveAreaOffset;
unsigned GPR_remaining = 8;
unsigned FPR_remaining = 13;
unsigned GPR_idx = 0, FPR_idx = 0;
MachineFrameInfo *MFI = F->getFrameInfo();
- for (Function::aiterator I = Fn.abegin(), E = Fn.aend(); I != E; ++I) {
+ for (Function::arg_iterator I = Fn.arg_begin(), E = Fn.arg_end(); I != E; ++I) {
bool ArgLive = !I->use_empty();
unsigned Reg = ArgLive ? getReg(*I) : 0;
int FI; // Frame object index
/// because we have to generate our sources into the source basic blocks, not
/// the current one.
///
-void ISel::SelectPHINodes() {
+void PPC64ISel::SelectPHINodes() {
const TargetInstrInfo &TII = *TM.getInstrInfo();
const Function &LF = *F->getFunction(); // The LLVM function...
for (Function::const_iterator I = LF.begin(), E = LF.end(); I != E; ++I) {
}
/// emitUCOM - emits an unordered FP compare.
-void ISel::emitUCOM(MachineBasicBlock *MBB, MachineBasicBlock::iterator IP,
- unsigned LHS, unsigned RHS) {
+void PPC64ISel::emitUCOM(MachineBasicBlock *MBB, MachineBasicBlock::iterator IP,
+ unsigned LHS, unsigned RHS) {
BuildMI(*MBB, IP, PPC::FCMPU, 2, PPC::CR0).addReg(LHS).addReg(RHS);
}
/// EmitComparison - emits a comparison of the two operands, returning the
/// extended setcc code to use. The result is in CR0.
///
-unsigned ISel::EmitComparison(unsigned OpNum, Value *Op0, Value *Op1,
- MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP) {
+unsigned PPC64ISel::EmitComparison(unsigned OpNum, Value *Op0, Value *Op1,
+ MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP) {
// The arguments are already supposed to be of the same type.
const Type *CompTy = Op0->getType();
unsigned Class = getClassB(CompTy);
/// visitSetCondInst - emit code to calculate the condition via
/// EmitComparison(), and possibly store a 0 or 1 to a register as a result
///
-void ISel::visitSetCondInst(SetCondInst &I) {
+void PPC64ISel::visitSetCondInst(SetCondInst &I) {
if (canFoldSetCCIntoBranchOrSelect(&I))
return;
.addMBB(copy0MBB).addReg(TrueValue).addMBB(copy1MBB);
}
-void ISel::visitSelectInst(SelectInst &SI) {
+void PPC64ISel::visitSelectInst(SelectInst &SI) {
unsigned DestReg = getReg(SI);
MachineBasicBlock::iterator MII = BB->end();
emitSelectOperation(BB, MII, SI.getCondition(), SI.getTrueValue(),
/// expression support.
/// FIXME: this is most likely broken in one or more ways. Namely, PowerPC has
/// no select instruction. FSEL only works for comparisons against zero.
-void ISel::emitSelectOperation(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- Value *Cond, Value *TrueVal, Value *FalseVal,
- unsigned DestReg) {
+void PPC64ISel::emitSelectOperation(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Value *Cond, Value *TrueVal,
+ Value *FalseVal, unsigned DestReg) {
unsigned SelectClass = getClassB(TrueVal->getType());
unsigned Opcode;
/// promote32 - Emit instructions to turn a narrow operand into a 32-bit-wide
/// operand, in the specified target register.
///
-void ISel::promote32(unsigned targetReg, const ValueRecord &VR) {
+void PPC64ISel::promote32(unsigned targetReg, const ValueRecord &VR) {
bool isUnsigned = VR.Ty->isUnsigned() || VR.Ty == Type::BoolTy;
Value *Val = VR.Val;
/// visitReturnInst - implemented with BLR
///
-void ISel::visitReturnInst(ReturnInst &I) {
+void PPC64ISel::visitReturnInst(ReturnInst &I) {
// Only do the processing if this is a non-void return
if (I.getNumOperands() > 0) {
Value *RetVal = I.getOperand(0);
/// jump to a block that is the immediate successor of the current block, we can
/// just make a fall-through (but we don't currently).
///
-void ISel::visitBranchInst(BranchInst &BI) {
+void PPC64ISel::visitBranchInst(BranchInst &BI) {
// Update machine-CFG edges
BB->addSuccessor(MBBMap[BI.getSuccessor(0)]);
if (BI.isConditional())
/// and the return value as appropriate. For the actual function call itself,
/// it inserts the specified CallMI instruction into the stream.
///
-void ISel::doCall(const ValueRecord &Ret, MachineInstr *CallMI,
- const std::vector<ValueRecord> &Args, bool isVarArg) {
+void PPC64ISel::doCall(const ValueRecord &Ret, MachineInstr *CallMI,
+ const std::vector<ValueRecord> &Args, bool isVarArg) {
// Count how many bytes are to be pushed on the stack, including the linkage
// area, and parameter passing area.
- unsigned NumBytes = 24;
- unsigned ArgOffset = 24;
+ unsigned NumBytes = ParameterSaveAreaOffset;
+ unsigned ArgOffset = ParameterSaveAreaOffset;
if (!Args.empty()) {
for (unsigned i = 0, e = Args.size(); i != e; ++i)
default: assert(0 && "Unknown class!");
}
- // Just to be safe, we'll always reserve the full 32 bytes worth of
- // argument passing space in case any called code gets funky on us.
- if (NumBytes < 24 + 32) NumBytes = 24 + 32;
+ // Just to be safe, we'll always reserve the full argument passing space in
+ // case any called code gets funky on us.
+ if (NumBytes < ParameterSaveAreaOffset + MaxArgumentStackSpace)
+ NumBytes = ParameterSaveAreaOffset + MaxArgumentStackSpace;
// Adjust the stack pointer for the new arguments...
// These functions are automatically eliminated by the prolog/epilog pass
BuildMI(BB, PPC::ADJCALLSTACKDOWN, 1).addImm(NumBytes);
// Arguments go on the stack in reverse order, as specified by the ABI.
- // Offset to the paramater area on the stack is 24.
int GPR_remaining = 8, FPR_remaining = 13;
unsigned GPR_idx = 0, FPR_idx = 0;
static const unsigned GPR[] = {
/// visitCallInst - Push args on stack and do a procedure call instruction.
-void ISel::visitCallInst(CallInst &CI) {
+void PPC64ISel::visitCallInst(CallInst &CI) {
MachineInstr *TheCall;
Function *F = CI.getCalledFunction();
if (F) {
/// function, lowering any calls to unknown intrinsic functions into the
/// equivalent LLVM code.
///
-void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
+void PPC64ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; )
if (CallInst *CI = dyn_cast<CallInst>(I++))
case Intrinsic::readio: {
// On PPC, memory operations are in-order. Lower this intrinsic
// into a volatile load.
- Instruction *Before = CI->getPrev();
LoadInst * LI = new LoadInst(CI->getOperand(1), "", true, CI);
CI->replaceAllUsesWith(LI);
BB->getInstList().erase(CI);
case Intrinsic::writeio: {
// On PPC, memory operations are in-order. Lower this intrinsic
// into a volatile store.
- Instruction *Before = CI->getPrev();
StoreInst *SI = new StoreInst(CI->getOperand(1),
CI->getOperand(2), true, CI);
CI->replaceAllUsesWith(SI);
}
}
-void ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
+void PPC64ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
unsigned TmpReg1, TmpReg2, TmpReg3;
switch (ID) {
case Intrinsic::vastart:
/// OperatorClass is one of: 0 for Add, 1 for Sub, 2 for And, 3 for Or, 4 for
/// Xor.
///
-void ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
+void PPC64ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
unsigned DestReg = getReg(B);
MachineBasicBlock::iterator MI = BB->end();
Value *Op0 = B.getOperand(0), *Op1 = B.getOperand(1);
/// emitBinaryFPOperation - This method handles emission of floating point
/// Add (0), Sub (1), Mul (2), and Div (3) operations.
-void ISel::emitBinaryFPOperation(MachineBasicBlock *BB,
- MachineBasicBlock::iterator IP,
- Value *Op0, Value *Op1,
- unsigned OperatorClass, unsigned DestReg) {
+void PPC64ISel::emitBinaryFPOperation(MachineBasicBlock *BB,
+ MachineBasicBlock::iterator IP,
+ Value *Op0, Value *Op1,
+ unsigned OperatorClass, unsigned DestReg){
static const unsigned OpcodeTab[][4] = {
{ PPC::FADDS, PPC::FSUBS, PPC::FMULS, PPC::FDIVS }, // Float
/// emitSimpleBinaryOperation - Common code shared between visitSimpleBinary
/// and constant expression support.
///
-void ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- Value *Op0, Value *Op1,
- unsigned OperatorClass, unsigned DestReg) {
+void PPC64ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Value *Op0, Value *Op1,
+ unsigned OperatorClass,
+ unsigned DestReg) {
unsigned Class = getClassB(Op0->getType());
// Arithmetic and Bitwise operators
static const unsigned OpcodeTab[] = {
PPC::ADD, PPC::SUB, PPC::AND, PPC::OR, PPC::XOR
};
+ // FIXME: Convert this to the version from PPC32ISel
static const unsigned ImmOpcodeTab[] = {
- PPC::ADDI, PPC::SUBI, PPC::ANDIo, PPC::ORI, PPC::XORI
+ PPC::ADDI, PPC::ADDI, PPC::ANDIo, PPC::ORI, PPC::XORI
};
static const unsigned RImmOpcodeTab[] = {
PPC::ADDI, PPC::SUBFIC, PPC::ANDIo, PPC::ORI, PPC::XORI
/// doMultiply - Emit appropriate instructions to multiply together the
/// Values Op0 and Op1, and put the result in DestReg.
///
-void ISel::doMultiply(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- unsigned DestReg, Value *Op0, Value *Op1) {
+void PPC64ISel::doMultiply(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ unsigned DestReg, Value *Op0, Value *Op1) {
unsigned Class0 = getClass(Op0->getType());
unsigned Class1 = getClass(Op1->getType());
/// doMultiplyConst - This method will multiply the value in Op0 by the
/// value of the ContantInt *CI
-void ISel::doMultiplyConst(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- unsigned DestReg, Value *Op0, ConstantInt *CI) {
+void PPC64ISel::doMultiplyConst(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ unsigned DestReg, Value *Op0, ConstantInt *CI) {
unsigned Class = getClass(Op0->getType());
// Mul op0, 0 ==> 0
doMultiply(MBB, IP, DestReg, Op0, CI);
}
-void ISel::visitMul(BinaryOperator &I) {
+void PPC64ISel::visitMul(BinaryOperator &I) {
unsigned ResultReg = getReg(I);
Value *Op0 = I.getOperand(0);
emitMultiply(BB, IP, Op0, Op1, ResultReg);
}
-void ISel::emitMultiply(MachineBasicBlock *MBB, MachineBasicBlock::iterator IP,
- Value *Op0, Value *Op1, unsigned DestReg) {
+void PPC64ISel::emitMultiply(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Value *Op0, Value *Op1, unsigned DestReg) {
TypeClass Class = getClass(Op0->getType());
switch (Class) {
/// select the result from a different register. Note that both of these
/// instructions work differently for signed and unsigned operands.
///
-void ISel::visitDivRem(BinaryOperator &I) {
+void PPC64ISel::visitDivRem(BinaryOperator &I) {
unsigned ResultReg = getReg(I);
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
ResultReg);
}
-void ISel::emitDivRemOperation(MachineBasicBlock *BB,
- MachineBasicBlock::iterator IP,
- Value *Op0, Value *Op1, bool isDiv,
- unsigned ResultReg) {
+void PPC64ISel::emitDivRemOperation(MachineBasicBlock *BB,
+ MachineBasicBlock::iterator IP,
+ Value *Op0, Value *Op1, bool isDiv,
+ unsigned ResultReg) {
const Type *Ty = Op0->getType();
unsigned Class = getClass(Ty);
switch (Class) {
doCall(ValueRecord(ResultReg, Type::DoubleTy), TheCall, Args, false);
}
return;
- case cLong: {
- static Function* const Funcs[] =
- { __moddi3Fn, __divdi3Fn, __umoddi3Fn, __udivdi3Fn };
- unsigned Op0Reg = getReg(Op0, BB, IP);
- unsigned Op1Reg = getReg(Op1, BB, IP);
- unsigned NameIdx = Ty->isUnsigned()*2 + isDiv;
- MachineInstr *TheCall =
- BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(Funcs[NameIdx], true);
-
- std::vector<ValueRecord> Args;
- Args.push_back(ValueRecord(Op0Reg, Type::LongTy));
- Args.push_back(ValueRecord(Op1Reg, Type::LongTy));
- doCall(ValueRecord(ResultReg, Type::LongTy), TheCall, Args, false);
- return;
- }
- case cByte: case cShort: case cInt:
+ case cLong: case cByte: case cShort: case cInt:
break; // Small integrals, handled below...
default: assert(0 && "Unknown class!");
}
if (log2V != 0 && Ty->isSigned()) {
unsigned Op0Reg = getReg(Op0, BB, IP);
unsigned TmpReg = makeAnotherReg(Op0->getType());
+ unsigned Opcode = Class == cLong ? PPC::SRADI : PPC::SRAWI;
- BuildMI(*BB, IP, PPC::SRAWI, 2, TmpReg).addReg(Op0Reg).addImm(log2V);
+ BuildMI(*BB, IP, Opcode, 2, TmpReg).addReg(Op0Reg).addImm(log2V);
BuildMI(*BB, IP, PPC::ADDZE, 1, ResultReg).addReg(TmpReg);
return;
}
}
+ static const unsigned DivOpcodes[] =
+ { PPC::DIVWU, PPC::DIVW, PPC::DIVDU, PPC::DIVD };
+
unsigned Op0Reg = getReg(Op0, BB, IP);
unsigned Op1Reg = getReg(Op1, BB, IP);
- unsigned Opcode = Ty->isSigned() ? PPC::DIVW : PPC::DIVWU;
+ unsigned Opcode = DivOpcodes[2*(Class == cLong) + Ty->isSigned()];
if (isDiv) {
BuildMI(*BB, IP, Opcode, 2, ResultReg).addReg(Op0Reg).addReg(Op1Reg);
} else { // Remainder
unsigned TmpReg1 = makeAnotherReg(Op0->getType());
unsigned TmpReg2 = makeAnotherReg(Op0->getType());
+ unsigned MulOpcode = Class == cLong ? PPC::MULLD : PPC::MULLW;
BuildMI(*BB, IP, Opcode, 2, TmpReg1).addReg(Op0Reg).addReg(Op1Reg);
- BuildMI(*BB, IP, PPC::MULLW, 2, TmpReg2).addReg(TmpReg1).addReg(Op1Reg);
+ BuildMI(*BB, IP, MulOpcode, 2, TmpReg2).addReg(TmpReg1).addReg(Op1Reg);
BuildMI(*BB, IP, PPC::SUBF, 2, ResultReg).addReg(TmpReg2).addReg(Op0Reg);
}
}
/// shift values equal to 1. Even the general case is sort of special,
/// because the shift amount has to be in CL, not just any old register.
///
-void ISel::visitShiftInst(ShiftInst &I) {
+void PPC64ISel::visitShiftInst(ShiftInst &I) {
MachineBasicBlock::iterator IP = BB->end();
emitShiftOperation(BB, IP, I.getOperand(0), I.getOperand(1),
I.getOpcode() == Instruction::Shl, I.getType(),
/// emitShiftOperation - Common code shared between visitShiftInst and
/// constant expression support.
///
-void ISel::emitShiftOperation(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- Value *Op, Value *ShiftAmount, bool isLeftShift,
- const Type *ResultTy, unsigned DestReg) {
+void PPC64ISel::emitShiftOperation(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Value *Op, Value *ShiftAmount,
+ bool isLeftShift, const Type *ResultTy,
+ unsigned DestReg) {
unsigned SrcReg = getReg (Op, MBB, IP);
bool isSigned = ResultTy->isSigned ();
unsigned Class = getClass (ResultTy);
/// mapping of LLVM classes to PPC load instructions, with the exception of
/// signed byte loads, which need a sign extension following them.
///
-void ISel::visitLoadInst(LoadInst &I) {
+void PPC64ISel::visitLoadInst(LoadInst &I) {
// Immediate opcodes, for reg+imm addressing
static const unsigned ImmOpcodes[] = {
PPC::LBZ, PPC::LHZ, PPC::LWZ,
/// visitStoreInst - Implement LLVM store instructions
///
-void ISel::visitStoreInst(StoreInst &I) {
+void PPC64ISel::visitStoreInst(StoreInst &I) {
// Immediate opcodes, for reg+imm addressing
static const unsigned ImmOpcodes[] = {
PPC::STB, PPC::STH, PPC::STW,
/// visitCastInst - Here we have various kinds of copying with or without sign
/// extension going on.
///
-void ISel::visitCastInst(CastInst &CI) {
+void PPC64ISel::visitCastInst(CastInst &CI) {
Value *Op = CI.getOperand(0);
unsigned SrcClass = getClassB(Op->getType());
/// emitCastOperation - Common code shared between visitCastInst and constant
/// expression cast support.
///
-void ISel::emitCastOperation(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- Value *Src, const Type *DestTy,
- unsigned DestReg) {
+void PPC64ISel::emitCastOperation(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Value *Src, const Type *DestTy,
+ unsigned DestReg) {
const Type *SrcTy = Src->getType();
unsigned SrcClass = getClassB(SrcTy);
unsigned DestClass = getClassB(DestTy);
// Handle casts from integer to floating point now...
if (DestClass == cFP32 || DestClass == cFP64) {
- // Emit a library call for long to float conversion
- if (SrcClass == cLong) {
- std::vector<ValueRecord> Args;
- Args.push_back(ValueRecord(SrcReg, SrcTy));
- Function *floatFn = (DestClass == cFP32) ? __floatdisfFn : __floatdidfFn;
- MachineInstr *TheCall =
- BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(floatFn, true);
- doCall(ValueRecord(DestReg, DestTy), TheCall, Args, false);
- return;
- }
-
- // Make sure we're dealing with a full 32 bits
- unsigned TmpReg = makeAnotherReg(Type::IntTy);
- promote32(TmpReg, ValueRecord(SrcReg, SrcTy));
-
- SrcReg = TmpReg;
-
// Spill the integer to memory and reload it from there.
- // Also spill room for a special conversion constant
- int ConstantFrameIndex =
- F->getFrameInfo()->CreateStackObject(Type::DoubleTy, TM.getTargetData());
+ unsigned TmpReg = makeAnotherReg(Type::DoubleTy);
int ValueFrameIdx =
F->getFrameInfo()->CreateStackObject(Type::DoubleTy, TM.getTargetData());
- unsigned constantHi = makeAnotherReg(Type::IntTy);
- unsigned constantLo = makeAnotherReg(Type::IntTy);
- unsigned ConstF = makeAnotherReg(Type::DoubleTy);
- unsigned TempF = makeAnotherReg(Type::DoubleTy);
-
- if (!SrcTy->isSigned()) {
- BuildMI(*BB, IP, PPC::LIS, 1, constantHi).addSImm(0x4330);
- BuildMI(*BB, IP, PPC::LI, 1, constantLo).addSImm(0);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(constantHi),
- ConstantFrameIndex);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(constantLo),
- ConstantFrameIndex, 4);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(constantHi),
- ValueFrameIdx);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(SrcReg),
- ValueFrameIdx, 4);
- addFrameReference(BuildMI(*BB, IP, PPC::LFD, 2, ConstF),
- ConstantFrameIndex);
- addFrameReference(BuildMI(*BB, IP, PPC::LFD, 2, TempF), ValueFrameIdx);
- BuildMI(*BB, IP, PPC::FSUB, 2, DestReg).addReg(TempF).addReg(ConstF);
- } else {
- unsigned TempLo = makeAnotherReg(Type::IntTy);
- BuildMI(*BB, IP, PPC::LIS, 1, constantHi).addSImm(0x4330);
- BuildMI(*BB, IP, PPC::LIS, 1, constantLo).addSImm(0x8000);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(constantHi),
- ConstantFrameIndex);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(constantLo),
- ConstantFrameIndex, 4);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(constantHi),
- ValueFrameIdx);
- BuildMI(*BB, IP, PPC::XORIS, 2, TempLo).addReg(SrcReg).addImm(0x8000);
- addFrameReference(BuildMI(*BB, IP, PPC::STW, 3).addReg(TempLo),
- ValueFrameIdx, 4);
- addFrameReference(BuildMI(*BB, IP, PPC::LFD, 2, ConstF),
- ConstantFrameIndex);
- addFrameReference(BuildMI(*BB, IP, PPC::LFD, 2, TempF), ValueFrameIdx);
- BuildMI(*BB, IP, PPC::FSUB, 2, DestReg).addReg(TempF).addReg(ConstF);
+ if (SrcClass == cLong) {
+ if (SrcTy->isSigned()) {
+ addFrameReference(BuildMI(*MBB, IP, PPC::STD, 3).addReg(SrcReg),
+ ValueFrameIdx);
+ addFrameReference(BuildMI(*MBB, IP, PPC::LFD, 2, TmpReg),
+ ValueFrameIdx);
+ BuildMI(*MBB, IP, PPC::FCFID, 1, DestReg).addReg(TmpReg);
+ } else {
+ unsigned Scale = getReg(ConstantFP::get(Type::DoubleTy, 0x1p32));
+ unsigned TmpHi = makeAnotherReg(Type::IntTy);
+ unsigned TmpLo = makeAnotherReg(Type::IntTy);
+ unsigned FPLow = makeAnotherReg(Type::DoubleTy);
+ unsigned FPTmpHi = makeAnotherReg(Type::DoubleTy);
+ unsigned FPTmpLo = makeAnotherReg(Type::DoubleTy);
+ int OtherFrameIdx = F->getFrameInfo()->CreateStackObject(Type::DoubleTy,
+ TM.getTargetData());
+ BuildMI(*MBB, IP, PPC::RLDICL, 3, TmpHi).addReg(SrcReg).addImm(32)
+ .addImm(32);
+ BuildMI(*MBB, IP, PPC::RLDICL, 3, TmpLo).addReg(SrcReg).addImm(0)
+ .addImm(32);
+ addFrameReference(BuildMI(*MBB, IP, PPC::STD, 3).addReg(TmpHi),
+ ValueFrameIdx);
+ addFrameReference(BuildMI(*MBB, IP, PPC::STD, 3).addReg(TmpLo),
+ OtherFrameIdx);
+ addFrameReference(BuildMI(*MBB, IP, PPC::LFD, 2, TmpReg),
+ ValueFrameIdx);
+ addFrameReference(BuildMI(*MBB, IP, PPC::LFD, 2, FPLow),
+ OtherFrameIdx);
+ BuildMI(*MBB, IP, PPC::FCFID, 1, FPTmpHi).addReg(TmpReg);
+ BuildMI(*MBB, IP, PPC::FCFID, 1, FPTmpLo).addReg(FPLow);
+ BuildMI(*MBB, IP, PPC::FMADD, 3, DestReg).addReg(Scale).addReg(FPTmpHi)
+ .addReg(FPTmpLo);
+ }
+ return;
}
+
+ // FIXME: really want a promote64
+ unsigned IntTmp = makeAnotherReg(Type::IntTy);
+
+ if (SrcTy->isSigned())
+ BuildMI(*MBB, IP, PPC::EXTSW, 1, IntTmp).addReg(SrcReg);
+ else
+ BuildMI(*MBB, IP, PPC::RLDICL, 3, IntTmp).addReg(SrcReg).addImm(0)
+ .addImm(32);
+ addFrameReference(BuildMI(*MBB, IP, PPC::STD, 3).addReg(IntTmp),
+ ValueFrameIdx);
+ addFrameReference(BuildMI(*MBB, IP, PPC::LFD, 2, TmpReg),
+ ValueFrameIdx);
+ BuildMI(*MBB, IP, PPC::FCFID, 1, DestReg).addReg(TmpReg);
return;
}
/// visitVANextInst - Implement the va_next instruction...
///
-void ISel::visitVANextInst(VANextInst &I) {
+void PPC64ISel::visitVANextInst(VANextInst &I) {
unsigned VAList = getReg(I.getOperand(0));
unsigned DestReg = getReg(I);
BuildMI(BB, PPC::ADDI, 2, DestReg).addReg(VAList).addSImm(Size);
}
-void ISel::visitVAArgInst(VAArgInst &I) {
+void PPC64ISel::visitVAArgInst(VAArgInst &I) {
unsigned VAList = getReg(I.getOperand(0));
unsigned DestReg = getReg(I);
/// visitGetElementPtrInst - instruction-select GEP instructions
///
-void ISel::visitGetElementPtrInst(GetElementPtrInst &I) {
+void PPC64ISel::visitGetElementPtrInst(GetElementPtrInst &I) {
if (canFoldGEPIntoLoadOrStore(&I))
return;
/// emitGEPOperation - Common code shared between visitGetElementPtrInst and
/// constant expression GEP support.
///
-void ISel::emitGEPOperation(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator IP,
- Value *Src, User::op_iterator IdxBegin,
- User::op_iterator IdxEnd, unsigned TargetReg,
- bool GEPIsFolded, ConstantSInt **RemainderPtr,
- unsigned *PendingAddReg) {
+void PPC64ISel::emitGEPOperation(MachineBasicBlock *MBB,
+ MachineBasicBlock::iterator IP,
+ Value *Src, User::op_iterator IdxBegin,
+ User::op_iterator IdxEnd, unsigned TargetReg,
+ bool GEPIsFolded, ConstantSInt **RemainderPtr,
+ unsigned *PendingAddReg) {
const TargetData &TD = TM.getTargetData();
const Type *Ty = Src->getType();
unsigned basePtrReg = getReg(Src, MBB, IP);
/// visitAllocaInst - If this is a fixed size alloca, allocate space from the
/// frame manager, otherwise do it the hard way.
///
-void ISel::visitAllocaInst(AllocaInst &I) {
+void PPC64ISel::visitAllocaInst(AllocaInst &I) {
// If this is a fixed size alloca in the entry block for the function, we
// statically stack allocate the space, so we don't need to do anything here.
//
/// visitMallocInst - Malloc instructions are code generated into direct calls
/// to the library malloc.
///
-void ISel::visitMallocInst(MallocInst &I) {
+void PPC64ISel::visitMallocInst(MallocInst &I) {
unsigned AllocSize = TM.getTargetData().getTypeSize(I.getAllocatedType());
unsigned Arg;
/// visitFreeInst - Free instructions are code gen'd to call the free libc
/// function.
///
-void ISel::visitFreeInst(FreeInst &I) {
+void PPC64ISel::visitFreeInst(FreeInst &I) {
std::vector<ValueRecord> Args;
Args.push_back(ValueRecord(I.getOperand(0)));
MachineInstr *TheCall =
/// code representation is a very simple peep-hole fashion.
///
FunctionPass *llvm::createPPC64ISelSimple(TargetMachine &TM) {
- return new ISel(TM);
+ return new PPC64ISel(TM);
}
projects / oota-llvm.git / blobdiff