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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman
2005-04-21 23:38:14 +00:00
parent b5f662fa03
commit 0e0a7a45d3
16 changed files with 263 additions and 262 deletions
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214
lib/Target/X86/X86ISelSimple.cpp
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@@ -1,10 +1,10 @@
//===-- X86ISelSimple.cpp - A simple instruction selector for x86 ---------===//
//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//
//===----------------------------------------------------------------------===//
//
// This file defines a simple peephole instruction selector for the x86 target
@@ -217,8 +217,8 @@ namespace {
MachineBasicBlock *MBB,
MachineBasicBlock::iterator MBBI);
void visitSelectInst(SelectInst &SI);
// Memory Instructions
void visitLoadInst(LoadInst &I);
void visitStoreInst(StoreInst &I);
@@ -226,7 +226,7 @@ namespace {
void visitAllocaInst(AllocaInst &I);
void visitMallocInst(MallocInst &I);
void visitFreeInst(FreeInst &I);
// Other operators
void visitShiftInst(ShiftInst &I);
void visitPHINode(PHINode &I) {} // PHI nodes handled by second pass
@@ -295,7 +295,7 @@ namespace {
void doMultiply(MachineBasicBlock *MBB, MachineBasicBlock::iterator MBBI,
unsigned DestReg, const Type *DestTy,
unsigned Op0Reg, unsigned Op1Reg);
void doMultiplyConst(MachineBasicBlock *MBB,
void doMultiplyConst(MachineBasicBlock *MBB,
MachineBasicBlock::iterator MBBI,
unsigned DestReg, const Type *DestTy,
unsigned Op0Reg, unsigned Op1Val);
@@ -323,11 +323,11 @@ namespace {
// Emit code for a 'SHLD DestReg, Op0, Op1, Amt' operation, where Amt is a
// constant.
void doSHLDConst(MachineBasicBlock *MBB,
void doSHLDConst(MachineBasicBlock *MBB,
MachineBasicBlock::iterator MBBI,
unsigned DestReg, unsigned Op0Reg, unsigned Op1Reg,
unsigned Op1Val);
/// emitSelectOperation - Common code shared between visitSelectInst and the
/// constant expression support.
void emitSelectOperation(MachineBasicBlock *MBB,
@@ -414,7 +414,7 @@ unsigned X86ISel::getReg(Value *V, MachineBasicBlock *MBB,
} else if (CastInst *CI = dyn_cast<CastInst>(V)) {
// Do not emit noop casts at all, unless it's a double -> float cast.
if (getClassB(CI->getType()) == getClassB(CI->getOperand(0)->getType()) &&
(CI->getType() != Type::FloatTy ||
(CI->getType() != Type::FloatTy ||
CI->getOperand(0)->getType() != Type::DoubleTy))
return getReg(CI->getOperand(0), MBB, IPt);
} else if (AllocaInst *AI = dyn_castFixedAlloca(V)) {
@@ -448,7 +448,7 @@ unsigned X86ISel::getFixedSizedAllocaFI(AllocaInst *AI) {
unsigned TySize = TM.getTargetData().getTypeSize(Ty);
TySize *= CUI->getValue(); // Get total allocated size...
unsigned Alignment = TM.getTargetData().getTypeAlignment(Ty);
// Create a new stack object using the frame manager...
int FrameIdx = F->getFrameInfo()->CreateStackObject(TySize, Alignment);
AllocaMap.insert(I, std::make_pair(AI, FrameIdx));
@@ -563,11 +563,11 @@ void X86ISel::copyConstantToRegister(MachineBasicBlock *MBB,
else if (CFP->isExactlyValue(-0.0)) {
unsigned Tmp = makeAnotherReg(Type::DoubleTy);
BuildMI(*MBB, IP, X86::FLD0, 0, Tmp);
BuildMI(*MBB, IP, X86::FCHS, 1, R).addReg(Tmp);
BuildMI(*MBB, IP, X86::FCHS, 1, R).addReg(Tmp);
} else if (CFP->isExactlyValue(-1.0)) {
unsigned Tmp = makeAnotherReg(Type::DoubleTy);
BuildMI(*MBB, IP, X86::FLD1, 0, Tmp);
BuildMI(*MBB, IP, X86::FCHS, 1, R).addReg(Tmp);
BuildMI(*MBB, IP, X86::FCHS, 1, R).addReg(Tmp);
} else { // FIXME: PI, other native values
// FIXME: 2*PI -> LDPI + FADD
@@ -586,7 +586,7 @@ void X86ISel::copyConstantToRegister(MachineBasicBlock *MBB,
}
unsigned CPI = CP->getConstantPoolIndex(CFP);
assert(Ty == Type::FloatTy || Ty == Type::DoubleTy && "Unknown FP type!");
unsigned LoadOpcode = Ty == Type::FloatTy ? X86::FLD32m : X86::FLD64m;
addConstantPoolReference(BuildMI(*MBB, IP, LoadOpcode, 4, R), CPI);
@@ -613,7 +613,7 @@ void X86ISel::LoadArgumentsToVirtualRegs(Function &Fn) {
// [ESP] -- return address
// [ESP + 4] -- first argument (leftmost lexically)
// [ESP + 8] -- second argument, if first argument is four bytes in size
// ...
// ...
//
unsigned ArgOffset = 0; // Frame mechanisms handle retaddr slot
MachineFrameInfo *MFI = F->getFrameInfo();
@@ -704,7 +704,7 @@ void X86ISel::EmitSpecialCodeForMain() {
// Switch the FPU to 64-bit precision mode for better compatibility and speed.
int CWFrameIdx = F->getFrameInfo()->CreateStackObject(2, 2);
addFrameReference(BuildMI(BB, X86::FNSTCW16m, 4), CWFrameIdx);
// Set the high part to be 64-bit precision.
addFrameReference(BuildMI(BB, X86::MOV8mi, 5),
CWFrameIdx, 1).addImm(2);
@@ -756,7 +756,7 @@ void X86ISel::SelectPHINodes() {
// predecessor. Recycle it.
ValReg = EntryIt->second;
} else {
} else {
// Get the incoming value into a virtual register.
//
Value *Val = PN->getIncomingValue(i);
@@ -774,11 +774,11 @@ void X86ISel::SelectPHINodes() {
// might be arbitrarily complex if it is a constant expression),
// just insert the computation at the top of the basic block.
MachineBasicBlock::iterator PI = PredMBB->begin();
// Skip over any PHI nodes though!
while (PI != PredMBB->end() && PI->getOpcode() == X86::PHI)
++PI;
ValReg = getReg(Val, PredMBB, PI);
}
@@ -927,7 +927,7 @@ void X86ISel::getAddressingMode(Value *Addr, X86AddressMode &AM) {
// canFoldSetCCIntoBranchOrSelect - Return the setcc instruction if we can fold
// it into the conditional branch or select instruction which is the only user
// of the cc instruction. This is the case if the conditional branch is the
// only user of the setcc. We also don't handle long arguments below, so we
// only user of the setcc. We also don't handle long arguments below, so we
// reject them here as well.
//
static SetCondInst *canFoldSetCCIntoBranchOrSelect(Value *V) {
@@ -1028,13 +1028,13 @@ unsigned X86ISel::EmitComparison(unsigned OpNum, Value *Op0, Value *Op1,
static const unsigned TESTTab[] = {
X86::TEST8ri, X86::TEST16ri, X86::TEST32ri
};
// Emit test X, i
unsigned LHS = getReg(Op0I->getOperand(0), MBB, IP);
unsigned Imm =
cast<ConstantInt>(Op0I->getOperand(1))->getRawValue();
BuildMI(*MBB, IP, TESTTab[Class], 2).addReg(LHS).addImm(Imm);
if (OpNum == 2) return 6; // Map jl -> js
if (OpNum == 3) return 7; // Map jg -> jns
return OpNum;
@@ -1176,7 +1176,7 @@ unsigned X86ISel::EmitComparison(unsigned OpNum, Value *Op0, Value *Op1,
}
/// SetCC instructions - Here we just emit boilerplate code to set a byte-sized
/// register, then move it to wherever the result should be.
/// register, then move it to wherever the result should be.
///
void X86ISel::visitSetCondInst(SetCondInst &I) {
if (canFoldSetCCIntoBranchOrSelect(&I))
@@ -1218,7 +1218,7 @@ void X86ISel::visitSelectInst(SelectInst &SI) {
emitSelectOperation(BB, MII, SI.getCondition(), SI.getTrueValue(),
SI.getFalseValue(), DestReg);
}
/// emitSelect - Common code shared between visitSelectInst and the constant
/// expression support.
void X86ISel::emitSelectOperation(MachineBasicBlock *MBB,
@@ -1226,7 +1226,7 @@ void X86ISel::emitSelectOperation(MachineBasicBlock *MBB,
Value *Cond, Value *TrueVal, Value *FalseVal,
unsigned DestReg) {
unsigned SelectClass = getClassB(TrueVal->getType());
// We don't support 8-bit conditional moves. If we have incoming constants,
// transform them into 16-bit constants to avoid having a run-time conversion.
if (SelectClass == cByte) {
@@ -1251,14 +1251,14 @@ void X86ISel::emitSelectOperation(MachineBasicBlock *MBB,
unsigned Opcode;
if (SetCondInst *SCI = canFoldSetCCIntoBranchOrSelect(Cond)) {
// We successfully folded the setcc into the select instruction.
unsigned OpNum = getSetCCNumber(SCI->getOpcode());
OpNum = EmitComparison(OpNum, SCI->getOperand(0), SCI->getOperand(1), MBB,
IP);
const Type *CompTy = SCI->getOperand(0)->getType();
bool isSigned = CompTy->isSigned() && getClassB(CompTy) != cFP;
// LLVM -> X86 signed X86 unsigned
// ----- ---------- ------------
// seteq -> cmovNE cmovNE
@@ -1270,7 +1270,7 @@ void X86ISel::emitSelectOperation(MachineBasicBlock *MBB,
// ----
// cmovNS // Used by comparison with 0 optimization
// cmovS
switch (SelectClass) {
default: assert(0 && "Unknown value class!");
case cFP: {
@@ -1296,7 +1296,7 @@ void X86ISel::emitSelectOperation(MachineBasicBlock *MBB,
// Long comparisons end up in the BL register.
CondReg = X86::BL;
}
BuildMI(*MBB, IP, X86::TEST8rr, 2).addReg(CondReg).addReg(CondReg);
Opcode = X86::FCMOVE;
}
@@ -1511,7 +1511,7 @@ void X86ISel::visitBranchInst(BranchInst &BI) {
BuildMI(BB, X86::JNE, 1).addMBB(MBBMap[BI.getSuccessor(0)]);
} else {
BuildMI(BB, X86::JE, 1).addMBB(MBBMap[BI.getSuccessor(1)]);
if (BI.getSuccessor(0) != NextBB)
BuildMI(BB, X86::JMP, 1).addMBB(MBBMap[BI.getSuccessor(0)]);
}
@@ -1524,7 +1524,7 @@ void X86ISel::visitBranchInst(BranchInst &BI) {
const Type *CompTy = SCI->getOperand(0)->getType();
bool isSigned = CompTy->isSigned() && getClassB(CompTy) != cFP;
// LLVM -> X86 signed X86 unsigned
// ----- ---------- ------------
@@ -1543,7 +1543,7 @@ void X86ISel::visitBranchInst(BranchInst &BI) {
{ X86::JE, X86::JNE, X86::JL, X86::JGE, X86::JG, X86::JLE,
X86::JS, X86::JNS },
};
if (BI.getSuccessor(0) != NextBB) {
BuildMI(BB, OpcodeTab[isSigned][OpNum], 1)
.addMBB(MBBMap[BI.getSuccessor(0)]);
@@ -1645,7 +1645,7 @@ void X86ISel::doCall(const ValueRecord &Ret, MachineInstr *CallMI,
}
ArgOffset += 4; // 8 byte entry, not 4.
break;
case cFP:
if (ConstantFP *CFP = dyn_cast_or_null<ConstantFP>(Args[i].Val)) {
// Store constant FP values with integer instructions to avoid having
@@ -1750,7 +1750,7 @@ void X86ISel::visitCallInst(CallInst &CI) {
unsigned DestReg = CI.getType() != Type::VoidTy ? getReg(CI) : 0;
doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
}
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
/// function, lowering any calls to unknown intrinsic functions into the
@@ -2061,7 +2061,7 @@ void X86ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
BuildMI(BB, Opc[Class], 0);
return;
}
default: assert(0 && "Error: unknown intrinsics should have been lowered!");
}
}
@@ -2117,7 +2117,7 @@ void X86ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
// Special case: op Reg, load [mem]
if (isa<LoadInst>(Op0) && !isa<LoadInst>(Op1) && Class != cLong &&
Op0->hasOneUse() &&
Op0->hasOneUse() &&
isSafeToFoldLoadIntoInstruction(*cast<LoadInst>(Op0), B))
if (!B.swapOperands())
std::swap(Op0, Op1); // Make sure any loads are in the RHS.
@@ -2131,7 +2131,7 @@ void X86ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
// Arithmetic operators
{ X86::ADD8rm, X86::ADD16rm, X86::ADD32rm }, // ADD
{ X86::SUB8rm, X86::SUB16rm, X86::SUB32rm }, // SUB
// Bitwise operators
{ X86::AND8rm, X86::AND16rm, X86::AND32rm }, // AND
{ X86:: OR8rm, X86:: OR16rm, X86:: OR32rm }, // OR
@@ -2157,7 +2157,7 @@ void X86ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
} else {
X86AddressMode AM;
getAddressingMode(cast<LoadInst>(Op1)->getOperand(0), AM);
addFullAddress(BuildMI(BB, Opcode, 5, DestReg).addReg(Op0r), AM);
}
return;
@@ -2166,7 +2166,7 @@ void X86ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
// If this is a floating point subtract, check to see if we can fold the first
// operand in.
if (Class == cFP && OperatorClass == 1 &&
isa<LoadInst>(Op0) &&
isa<LoadInst>(Op0) &&
isSafeToFoldLoadIntoInstruction(*cast<LoadInst>(Op0), B)) {
const Type *Ty = Op0->getType();
assert(Ty == Type::FloatTy || Ty == Type::DoubleTy && "Unknown FP type!");
@@ -2180,7 +2180,7 @@ void X86ISel::visitSimpleBinary(BinaryOperator &B, unsigned OperatorClass) {
} else {
X86AddressMode AM;
getAddressingMode(cast<LoadInst>(Op0)->getOperand(0), AM);
addFullAddress(BuildMI(BB, Opcode, 5, DestReg).addReg(Op1r), AM);
}
return;
@@ -2216,7 +2216,7 @@ void X86ISel::emitBinaryFPOperation(MachineBasicBlock *BB,
DestReg).addReg(Op0r), CPI);
return;
}
// Special case: R1 = op <const fp>, R2
if (ConstantFP *CFP = dyn_cast<ConstantFP>(Op0))
if (CFP->isExactlyValue(-0.0) && OperatorClass == 1) {
@@ -2236,7 +2236,7 @@ void X86ISel::emitBinaryFPOperation(MachineBasicBlock *BB,
{ X86::FADD32m, X86::FSUBR32m, X86::FMUL32m, X86::FDIVR32m }, // Float
{ X86::FADD64m, X86::FSUBR64m, X86::FMUL64m, X86::FDIVR64m }, // Double
};
assert(Ty == Type::FloatTy||Ty == Type::DoubleTy && "Unknown FP type!");
unsigned Opcode = OpcodeTab[Ty != Type::FloatTy][OperatorClass];
unsigned Op1r = getReg(Op1, BB, IP);
@@ -2266,7 +2266,7 @@ void X86ISel::emitBinaryFPOperation(MachineBasicBlock *BB,
void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
Value *Op0, Value *Op1,
unsigned OperatorClass,
unsigned OperatorClass,
unsigned DestReg) {
unsigned Class = getClassB(Op0->getType());
@@ -2286,7 +2286,7 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
if (CI->isNullValue()) {
unsigned op1Reg = getReg(Op1, MBB, IP);
BuildMI(*MBB, IP, NEGTab[Class], 1, DestReg).addReg(op1Reg);
if (Class == cLong) {
// We just emitted: Dl = neg Sl
// Now emit : T = addc Sh, 0
@@ -2300,7 +2300,7 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
// sub C, X -> tmp = neg X; DestReg = add tmp, C. This is better
// than copying C into a temporary register, because of register
// pressure (tmp and destreg can share a register.
static unsigned const ADDRITab[] = {
static unsigned const ADDRITab[] = {
X86::ADD8ri, X86::ADD16ri, X86::ADD32ri, 0, X86::ADD32ri
};
unsigned op1Reg = getReg(Op1, MBB, IP);
@@ -2344,18 +2344,18 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
BuildMI(*MBB, IP, INCTab[Class], 1, DestReg).addReg(Op0r);
return;
}
static const unsigned OpcodeTab[][5] = {
// Arithmetic operators
{ X86::ADD8ri, X86::ADD16ri, X86::ADD32ri, 0, X86::ADD32ri }, // ADD
{ X86::SUB8ri, X86::SUB16ri, X86::SUB32ri, 0, X86::SUB32ri }, // SUB
// Bitwise operators
{ X86::AND8ri, X86::AND16ri, X86::AND32ri, 0, X86::AND32ri }, // AND
{ X86:: OR8ri, X86:: OR16ri, X86:: OR32ri, 0, X86::OR32ri }, // OR
{ X86::XOR8ri, X86::XOR16ri, X86::XOR32ri, 0, X86::XOR32ri }, // XOR
};
unsigned Opcode = OpcodeTab[OperatorClass][Class];
unsigned Op1l = cast<ConstantInt>(Op1C)->getRawValue();
@@ -2363,11 +2363,11 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
BuildMI(*MBB, IP, Opcode, 2, DestReg).addReg(Op0r).addImm(Op1l);
return;
}
// If this is a long value and the high or low bits have a special
// property, emit some special cases.
unsigned Op1h = cast<ConstantInt>(Op1C)->getRawValue() >> 32LL;
// If the constant is zero in the low 32-bits, just copy the low part
// across and apply the normal 32-bit operation to the high parts. There
// will be no carry or borrow into the top.
@@ -2380,7 +2380,7 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
.addReg(Op0r+1).addImm(Op1h);
return;
}
// If this is a logical operation and the top 32-bits are zero, just
// operate on the lower 32.
if (Op1h == 0 && OperatorClass > 1) {
@@ -2392,15 +2392,15 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
BuildMI(*MBB, IP, X86::MOV32ri, 1, DestReg+1).addImm(0);
return;
}
// TODO: We could handle lots of other special cases here, such as AND'ing
// with 0xFFFFFFFF00000000 -> noop, etc.
// Otherwise, code generate the full operation with a constant.
static const unsigned TopTab[] = {
X86::ADC32ri, X86::SBB32ri, X86::AND32ri, X86::OR32ri, X86::XOR32ri
};
BuildMI(*MBB, IP, Opcode, 2, DestReg).addReg(Op0r).addImm(Op1l);
BuildMI(*MBB, IP, TopTab[OperatorClass], 2, DestReg+1)
.addReg(Op0r+1).addImm(Op1h);
@@ -2412,18 +2412,18 @@ void X86ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
// Arithmetic operators
{ X86::ADD8rr, X86::ADD16rr, X86::ADD32rr, 0, X86::ADD32rr }, // ADD
{ X86::SUB8rr, X86::SUB16rr, X86::SUB32rr, 0, X86::SUB32rr }, // SUB
// Bitwise operators
{ X86::AND8rr, X86::AND16rr, X86::AND32rr, 0, X86::AND32rr }, // AND
{ X86:: OR8rr, X86:: OR16rr, X86:: OR32rr, 0, X86:: OR32rr }, // OR
{ X86::XOR8rr, X86::XOR16rr, X86::XOR32rr, 0, X86::XOR32rr }, // XOR
};
unsigned Opcode = OpcodeTab[OperatorClass][Class];
unsigned Op0r = getReg(Op0, MBB, IP);
unsigned Op1r = getReg(Op1, MBB, IP);
BuildMI(*MBB, IP, Opcode, 2, DestReg).addReg(Op0r).addReg(Op1r);
if (Class == cLong) { // Handle the upper 32 bits of long values...
static const unsigned TopTab[] = {
X86::ADC32rr, X86::SBB32rr, X86::AND32rr, X86::OR32rr, X86::XOR32rr
@@ -2568,7 +2568,7 @@ void X86ISel::doMultiplyConst(MachineBasicBlock *MBB,
return;
}
}
if (Class == cShort) {
BuildMI(*MBB, IP, X86::IMUL16rri,2,DestReg).addReg(op0Reg).addImm(ConstRHS);
return;
@@ -2580,7 +2580,7 @@ void X86ISel::doMultiplyConst(MachineBasicBlock *MBB,
// Most general case, emit a normal multiply...
TmpReg = makeAnotherReg(DestTy);
BuildMI(*MBB, IP, MOVriTab[Class], 1, TmpReg).addImm(ConstRHS);
// Emit a MUL to multiply the register holding the index by
// elementSize, putting the result in OffsetReg.
doMultiply(MBB, IP, DestReg, DestTy, op0Reg, TmpReg);
@@ -2605,7 +2605,7 @@ void X86ISel::visitMul(BinaryOperator &I) {
const Type *Ty = Op0->getType();
assert(Ty == Type::FloatTy||Ty == Type::DoubleTy && "Unknown FP type!");
unsigned Opcode = Ty == Type::FloatTy ? X86::FMUL32m : X86::FMUL64m;
unsigned Op0r = getReg(Op0);
if (AllocaInst *AI = dyn_castFixedAlloca(LI->getOperand(0))) {
unsigned FI = getFixedSizedAllocaFI(AI);
@@ -2613,7 +2613,7 @@ void X86ISel::visitMul(BinaryOperator &I) {
} else {
X86AddressMode AM;
getAddressingMode(LI->getOperand(0), AM);
addFullAddress(BuildMI(BB, Opcode, 5, ResultReg).addReg(Op0r), AM);
}
return;
@@ -2624,7 +2624,7 @@ void X86ISel::visitMul(BinaryOperator &I) {
emitMultiply(BB, IP, Op0, Op1, ResultReg);
}
void X86ISel::emitMultiply(MachineBasicBlock *MBB,
void X86ISel::emitMultiply(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
Value *Op0, Value *Op1, unsigned DestReg) {
MachineBasicBlock &BB = *MBB;
@@ -2655,14 +2655,14 @@ void X86ISel::emitMultiply(MachineBasicBlock *MBB,
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op1)) {
unsigned CLow = CI->getRawValue();
unsigned CHi = CI->getRawValue() >> 32;
if (CLow == 0) {
// If the low part of the constant is all zeros, things are simple.
BuildMI(BB, IP, X86::MOV32ri, 1, DestReg).addImm(0);
doMultiplyConst(&BB, IP, DestReg+1, Type::UIntTy, Op0Reg, CHi);
return;
}
// Multiply the two low parts... capturing carry into EDX
unsigned OverflowReg = 0;
if (CLow == 1) {
@@ -2673,15 +2673,15 @@ void X86ISel::emitMultiply(MachineBasicBlock *MBB,
BuildMI(BB, IP, X86::MOV32ri, 1, Op1RegL).addImm(CLow);
BuildMI(BB, IP, X86::MOV32rr, 1, X86::EAX).addReg(Op0Reg);
BuildMI(BB, IP, X86::MUL32r, 1).addReg(Op1RegL); // AL*BL
BuildMI(BB, IP, X86::MOV32rr, 1, DestReg).addReg(X86::EAX); // AL*BL
BuildMI(BB, IP, X86::MOV32rr, 1,
OverflowReg).addReg(X86::EDX); // AL*BL >> 32
}
unsigned AHBLReg = makeAnotherReg(Type::UIntTy); // AH*BL
doMultiplyConst(&BB, IP, AHBLReg, Type::UIntTy, Op0Reg+1, CLow);
unsigned AHBLplusOverflowReg;
if (OverflowReg) {
AHBLplusOverflowReg = makeAnotherReg(Type::UIntTy);
@@ -2690,13 +2690,13 @@ void X86ISel::emitMultiply(MachineBasicBlock *MBB,
} else {
AHBLplusOverflowReg = AHBLReg;
}
if (CHi == 0) {
BuildMI(BB, IP, X86::MOV32rr, 1, DestReg+1).addReg(AHBLplusOverflowReg);
} else {
unsigned ALBHReg = makeAnotherReg(Type::UIntTy); // AL*BH
doMultiplyConst(&BB, IP, ALBHReg, Type::UIntTy, Op0Reg, CHi);
BuildMI(BB, IP, X86::ADD32rr, 2, // AL*BH + AH*BL + (AL*BL >> 32)
DestReg+1).addReg(AHBLplusOverflowReg).addReg(ALBHReg);
}
@@ -2709,24 +2709,24 @@ void X86ISel::emitMultiply(MachineBasicBlock *MBB,
// Multiply the two low parts... capturing carry into EDX
BuildMI(BB, IP, X86::MOV32rr, 1, X86::EAX).addReg(Op0Reg);
BuildMI(BB, IP, X86::MUL32r, 1).addReg(Op1Reg); // AL*BL
unsigned OverflowReg = makeAnotherReg(Type::UIntTy);
BuildMI(BB, IP, X86::MOV32rr, 1, DestReg).addReg(X86::EAX); // AL*BL
BuildMI(BB, IP, X86::MOV32rr, 1,
OverflowReg).addReg(X86::EDX); // AL*BL >> 32
unsigned AHBLReg = makeAnotherReg(Type::UIntTy); // AH*BL
BuildMI(BB, IP, X86::IMUL32rr, 2,
AHBLReg).addReg(Op0Reg+1).addReg(Op1Reg);
unsigned AHBLplusOverflowReg = makeAnotherReg(Type::UIntTy);
BuildMI(BB, IP, X86::ADD32rr, 2, // AH*BL+(AL*BL >> 32)
AHBLplusOverflowReg).addReg(AHBLReg).addReg(OverflowReg);
unsigned ALBHReg = makeAnotherReg(Type::UIntTy); // AL*BH
BuildMI(BB, IP, X86::IMUL32rr, 2,
ALBHReg).addReg(Op0Reg).addReg(Op1Reg+1);
BuildMI(BB, IP, X86::ADD32rr, 2, // AL*BH + AH*BL + (AL*BL >> 32)
DestReg+1).addReg(AHBLplusOverflowReg).addReg(ALBHReg);
}
@@ -2748,7 +2748,7 @@ void X86ISel::visitDivRem(BinaryOperator &I) {
const Type *Ty = Op0->getType();
assert(Ty == Type::FloatTy||Ty == Type::DoubleTy && "Unknown FP type!");
unsigned Opcode = Ty == Type::FloatTy ? X86::FDIV32m : X86::FDIV64m;
unsigned Op0r = getReg(Op0);
if (AllocaInst *AI = dyn_castFixedAlloca(LI->getOperand(0))) {
unsigned FI = getFixedSizedAllocaFI(AI);
@@ -2756,7 +2756,7 @@ void X86ISel::visitDivRem(BinaryOperator &I) {
} else {
X86AddressMode AM;
getAddressingMode(LI->getOperand(0), AM);
addFullAddress(BuildMI(BB, Opcode, 5, ResultReg).addReg(Op0r), AM);
}
return;
@@ -2767,7 +2767,7 @@ void X86ISel::visitDivRem(BinaryOperator &I) {
const Type *Ty = Op0->getType();
assert(Ty == Type::FloatTy||Ty == Type::DoubleTy && "Unknown FP type!");
unsigned Opcode = Ty == Type::FloatTy ? X86::FDIVR32m : X86::FDIVR64m;
unsigned Op1r = getReg(Op1);
if (AllocaInst *AI = dyn_castFixedAlloca(LI->getOperand(0))) {
unsigned FI = getFixedSizedAllocaFI(AI);
@@ -2927,7 +2927,7 @@ void X86ISel::emitDivRemOperation(MachineBasicBlock *BB,
unsigned TmpReg1 = makeAnotherReg(Op0->getType());
BuildMI(*BB, IP, ANDOpcode[Class], 2, TmpReg1).addReg(Op0Reg).addImm(1);
unsigned TmpReg2 = makeAnotherReg(Op0->getType());
BuildMI(*BB, IP, XOROpcode[Class], 2,
TmpReg2).addReg(TmpReg1).addReg(TmpReg0);
@@ -2971,7 +2971,7 @@ void X86ISel::emitDivRemOperation(MachineBasicBlock *BB,
// Figure out which register we want to pick the result out of...
unsigned DestReg = isDiv ? Reg : ExtReg;
// Put the result into the destination register...
BuildMI(*BB, IP, MovOpcode[Class], 1, ResultReg).addReg(DestReg);
}
@@ -2991,7 +2991,7 @@ void X86ISel::visitShiftInst(ShiftInst &I) {
/// Emit code for a 'SHLD DestReg, Op0, Op1, Amt' operation, where Amt is a
/// constant.
void X86ISel::doSHLDConst(MachineBasicBlock *MBB,
void X86ISel::doSHLDConst(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
unsigned DestReg, unsigned Op0Reg, unsigned Op1Reg,
unsigned Amt) {
@@ -3019,7 +3019,7 @@ void X86ISel::doSHLDConst(MachineBasicBlock *MBB,
// NOTE: It is always cheaper on the P4 to emit SHLD as two shifts and an OR
// than it is to emit a real SHLD.
BuildMI(*MBB, IP, X86::SHLD32rri8, 3,
BuildMI(*MBB, IP, X86::SHLD32rri8, 3,
DestReg).addReg(Op0Reg).addReg(Op1Reg).addImm(Amt);
}
}
@@ -3028,8 +3028,8 @@ void X86ISel::doSHLDConst(MachineBasicBlock *MBB,
/// constant expression support.
void X86ISel::emitShiftOperation(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
Value *Op, Value *ShiftAmount,
bool isLeftShift, const Type *ResultTy,
Value *Op, Value *ShiftAmount,
bool isLeftShift, const Type *ResultTy,
unsigned DestReg) {
unsigned SrcReg = getReg (Op, MBB, IP);
bool isSigned = ResultTy->isSigned ();
@@ -3127,7 +3127,7 @@ void X86ISel::emitShiftOperation(MachineBasicBlock *MBB,
BuildMI(*MBB, IP, X86::TEST8ri, 2).addReg(X86::CL).addImm(32);
// DestHi = (>32) ? TmpReg3 : TmpReg2;
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
DestReg+1).addReg(TmpReg2).addReg(TmpReg3);
// DestLo = (>32) ? TmpReg : TmpReg3;
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
@@ -3144,11 +3144,11 @@ void X86ISel::emitShiftOperation(MachineBasicBlock *MBB,
BuildMI(*MBB, IP, X86::TEST8ri, 2).addReg(X86::CL).addImm(32);
// DestLo = (>32) ? TmpReg3 : TmpReg2;
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
DestReg).addReg(TmpReg2).addReg(TmpReg3);
// DestHi = (>32) ? TmpReg : TmpReg3;
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
BuildMI(*MBB, IP, X86::CMOVNE32rr, 2,
DestReg+1).addReg(TmpReg3).addReg(TmpReg);
}
}
@@ -3235,7 +3235,7 @@ void X86ISel::visitLoadInst(LoadInst &I) {
bool Swapped = false;
if (!isa<LoadInst>(User->getOperand(1)))
Swapped = !cast<BinaryOperator>(User)->swapOperands();
// Okay, now that everything is set up, if this load is used by the second
// operand, and if there are no instructions that invalidate the load
// before the binary operator, eliminate the load.
@@ -3253,7 +3253,7 @@ void X86ISel::visitLoadInst(LoadInst &I) {
return; // Eliminate the load!
// If we swapped the operands to the instruction, but couldn't fold the
// load anyway, swap them back. We don't want to break add X, int
// load anyway, swap them back. We don't want to break add X, int
// folding.
if (Swapped) cast<BinaryOperator>(User)->swapOperands();
}
@@ -3278,7 +3278,7 @@ void X86ISel::visitLoadInst(LoadInst &I) {
} else {
X86AddressMode AM;
getAddressingMode(I.getOperand(0), AM);
if (Class == cLong) {
addFullAddress(BuildMI(BB, X86::MOV32rm, 4, DestReg), AM);
AM.Disp += 4;
@@ -3339,7 +3339,7 @@ void X86ISel::visitStoreInst(StoreInst &I) {
addFullAddress(BuildMI(BB, X86::MOV32mi, 5), AM).addImm(
unsigned(V.I >> 32));
}
} else if (Class == cLong) {
unsigned ValReg = getReg(I.getOperand(0));
addFullAddress(BuildMI(BB, X86::MOV32mr, 5), AM).addReg(ValReg);
@@ -3374,7 +3374,7 @@ void X86ISel::visitCastInst(CastInst &CI) {
// Noop casts are not emitted: getReg will return the source operand as the
// register to use for any uses of the noop cast.
if (DestClass == SrcClass) {
// The only detail in this plan is that casts from double -> float are
// The only detail in this plan is that casts from double -> float are
// truncating operations that we have to codegen through memory (despite
// the fact that the source/dest registers are the same class).
if (CI.getType() != Type::FloatTy || Op->getType() != Type::DoubleTy)
@@ -3390,7 +3390,7 @@ void X86ISel::visitCastInst(CastInst &CI) {
if (!isa<GetElementPtrInst>(*I)) {
AllUsesAreGEPs = false;
break;
}
}
// No need to codegen this cast if all users are getelementptr instrs...
if (AllUsesAreGEPs) return;
@@ -3497,7 +3497,7 @@ void X86ISel::emitCastOperation(MachineBasicBlock *BB,
{ X86::MOVSX16rr8, X86::MOVSX32rr8, X86::MOVSX32rr16, X86::MOV32rr }, // s
{ X86::MOVZX16rr8, X86::MOVZX32rr8, X86::MOVZX32rr16, X86::MOV32rr } // u
};
bool isUnsigned = SrcTy->isUnsigned() || SrcTy == Type::BoolTy;
BuildMI(*BB, IP, Opc[isUnsigned][SrcClass + DestClass - 1], 1,
DestReg).addReg(SrcReg);
@@ -3516,7 +3516,7 @@ void X86ISel::emitCastOperation(MachineBasicBlock *BB,
BuildMI(*BB, IP, X86::MOV32rr, 1, DestReg).addReg(SrcReg);
return;
}
// Handle cast of LARGER int to SMALLER int using a move to EAX followed by a
// move out of AX or AL.
if ((SrcClass <= cInt || SrcClass == cLong) && DestClass <= cInt
@@ -3560,7 +3560,7 @@ void X86ISel::emitCastOperation(MachineBasicBlock *BB,
default: // No promotion needed...
break;
}
if (PromoteType) {
unsigned TmpReg = makeAnotherReg(PromoteType);
BuildMI(*BB, IP, PromoteOpcode, 1, TmpReg).addReg(SrcReg);
@@ -3618,11 +3618,11 @@ void X86ISel::emitCastOperation(MachineBasicBlock *BB,
MachineConstantPool *CP = F->getConstantPool();
unsigned Zero = makeAnotherReg(Type::IntTy);
Constant *Null = Constant::getNullValue(Type::UIntTy);
addConstantPoolReference(BuildMI(*BB, IP, X86::LEA32r, 5, Zero),
addConstantPoolReference(BuildMI(*BB, IP, X86::LEA32r, 5, Zero),
CP->getConstantPoolIndex(Null));
unsigned Offset = makeAnotherReg(Type::IntTy);
Constant *OffsetCst = ConstantUInt::get(Type::UIntTy, 0x5f800000);
addConstantPoolReference(BuildMI(*BB, IP, X86::LEA32r, 5, Offset),
CP->getConstantPoolIndex(OffsetCst));
unsigned Addr = makeAnotherReg(Type::IntTy);
@@ -3659,7 +3659,7 @@ void X86ISel::emitCastOperation(MachineBasicBlock *BB,
// Reload the modified control word now...
addFrameReference(BuildMI(*BB, IP, X86::FLDCW16m, 4), CWFrameIdx);
// Restore the memory image of control word to original value
addFrameReference(BuildMI(*BB, IP, X86::MOV8mr, 5),
CWFrameIdx, 1).addReg(HighPartOfCW);
@@ -3801,7 +3801,7 @@ void X86ISel::visitGetElementPtrInst(GetElementPtrInst &I) {
///
/// Note that there is one fewer entry in GEPTypes than there is in GEPOps.
///
void X86ISel::getGEPIndex(MachineBasicBlock *MBB,
void X86ISel::getGEPIndex(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
std::vector<Value*> &GEPOps,
std::vector<const Type*> &GEPTypes,
@@ -3822,7 +3822,7 @@ void X86ISel::getGEPIndex(MachineBasicBlock *MBB,
// It's a struct access. CUI is the index into the structure,
// which names the field. This index must have unsigned type.
const ConstantUInt *CUI = cast<ConstantUInt>(GEPOps.back());
// Use the TargetData structure to pick out what the layout of the
// structure is in memory. Since the structure index must be constant, we
// can get its value and use it to find the right byte offset from the
@@ -3849,7 +3849,7 @@ void X86ISel::getGEPIndex(MachineBasicBlock *MBB,
// If the index reg is already taken, we can't handle this index.
if (AM.IndexReg) return;
// If this is a size that we can handle, then add the index as
// If this is a size that we can handle, then add the index as
switch (TypeSize) {
case 1: case 2: case 4: case 8:
// These are all acceptable scales on X86.
@@ -3906,7 +3906,7 @@ bool X86ISel::isGEPFoldable(MachineBasicBlock *MBB,
GEPOps.resize(IdxEnd-IdxBegin+1);
GEPOps[0] = Src;
std::copy(IdxBegin, IdxEnd, GEPOps.begin()+1);
std::vector<const Type*>
GEPTypes(gep_type_begin(Src->getType(), IdxBegin, IdxEnd),
gep_type_end(Src->getType(), IdxBegin, IdxEnd));
@@ -3944,7 +3944,7 @@ void X86ISel::emitGEPOperation(MachineBasicBlock *MBB,
GEPOps.resize(IdxEnd-IdxBegin+1);
GEPOps[0] = Src;
std::copy(IdxBegin, IdxEnd, GEPOps.begin()+1);
std::vector<const Type*> GEPTypes;
GEPTypes.assign(gep_type_begin(Src->getType(), IdxBegin, IdxEnd),
gep_type_end(Src->getType(), IdxBegin, IdxEnd));
@@ -3954,7 +3954,7 @@ void X86ISel::emitGEPOperation(MachineBasicBlock *MBB,
unsigned OldSize = GEPOps.size();
X86AddressMode AM;
getGEPIndex(MBB, IP, GEPOps, GEPTypes, AM);
if (GEPOps.size() != OldSize) {
// getGEPIndex consumed some of the input. Build an LEA instruction here.
unsigned NextTarget = 0;
@@ -4061,7 +4061,7 @@ void X86ISel::visitAllocaInst(AllocaInst &I) {
// statically stack allocate the space, so we don't need to do anything here.
//
if (dyn_castFixedAlloca(&I)) return;
// Find the data size of the alloca inst's getAllocatedType.
const Type *Ty = I.getAllocatedType();
unsigned TySize = TM.getTargetData().getTypeSize(Ty);
@@ -4070,7 +4070,7 @@ void X86ISel::visitAllocaInst(AllocaInst &I) {
// constant by the variable amount.
unsigned TotalSizeReg = makeAnotherReg(Type::UIntTy);
unsigned SrcReg1 = getReg(I.getArraySize());
// TotalSizeReg = mul <numelements>, <TypeSize>
MachineBasicBlock::iterator MBBI = BB->end();
doMultiplyConst(BB, MBBI, TotalSizeReg, Type::UIntTy, SrcReg1, TySize);
@@ -4082,7 +4082,7 @@ void X86ISel::visitAllocaInst(AllocaInst &I) {
// AlignedSize = and <AddedSize>, ~15
unsigned AlignedSize = makeAnotherReg(Type::UIntTy);
BuildMI(BB, X86::AND32ri, 2, AlignedSize).addReg(AddedSizeReg).addImm(~15);
// Subtract size from stack pointer, thereby allocating some space.
BuildMI(BB, X86::SUB32rr, 2, X86::ESP).addReg(X86::ESP).addReg(AlignedSize);
@@ -4129,7 +4129,7 @@ void X86ISel::visitFreeInst(FreeInst &I) {
1).addExternalSymbol("free", true);
doCall(ValueRecord(0, Type::VoidTy), TheCall, Args);
}
/// createX86SimpleInstructionSelector - This pass converts an LLVM function
/// into a machine code representation is a very simple peep-hole fashion. The
/// generated code sucks but the implementation is nice and simple.