//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "PPCHazardRecognizers.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/SSARegMap.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Target/TargetOptions.h"
class VISIBILITY_HIDDEN PPCDAGToDAGISel : public SelectionDAGISel {
PPCTargetMachine &TM;
PPCTargetLowering PPCLowering;
+ const PPCSubtarget &PPCSubTarget;
unsigned GlobalBaseReg;
public:
PPCDAGToDAGISel(PPCTargetMachine &tm)
: SelectionDAGISel(PPCLowering), TM(tm),
- PPCLowering(*TM.getTargetLowering()) {}
+ PPCLowering(*TM.getTargetLowering()),
+ PPCSubTarget(*TM.getSubtargetImpl()) {}
virtual bool runOnFunction(Function &Fn) {
// Make sure we re-emit a set of the global base reg if necessary
// In this case, there will be virtual registers of vector type type created
// by the scheduler. Detect them now.
MachineFunction &Fn = MachineFunction::get(&F);
- SSARegMap *RegMap = Fn.getSSARegMap();
bool HasVectorVReg = false;
- for (unsigned i = MRegisterInfo::FirstVirtualRegister,
- e = RegMap->getLastVirtReg()+1; i != e; ++i)
- if (RegMap->getRegClass(i) == &PPC::VRRCRegClass) {
+ for (unsigned i = TargetRegisterInfo::FirstVirtualRegister,
+ e = RegInfo->getLastVirtReg()+1; i != e; ++i)
+ if (RegInfo->getRegClass(i) == &PPC::VRRCRegClass) {
HasVectorVReg = true;
break;
}
// Create two vregs - one to hold the VRSAVE register that is live-in to the
// function and one for the value after having bits or'd into it.
- unsigned InVRSAVE = RegMap->createVirtualRegister(&PPC::GPRCRegClass);
- unsigned UpdatedVRSAVE = RegMap->createVirtualRegister(&PPC::GPRCRegClass);
+ unsigned InVRSAVE = RegInfo->createVirtualRegister(&PPC::GPRCRegClass);
+ unsigned UpdatedVRSAVE = RegInfo->createVirtualRegister(&PPC::GPRCRegClass);
const TargetInstrInfo &TII = *TM.getInstrInfo();
MachineBasicBlock &EntryBB = *Fn.begin();
// MTVRSAVE UpdatedVRSAVE
MachineBasicBlock::iterator IP = EntryBB.begin(); // Insert Point
BuildMI(EntryBB, IP, TII.get(PPC::MFVRSAVE), InVRSAVE);
- BuildMI(EntryBB, IP, TII.get(PPC::UPDATE_VRSAVE), UpdatedVRSAVE).addReg(InVRSAVE);
+ BuildMI(EntryBB, IP, TII.get(PPC::UPDATE_VRSAVE),
+ UpdatedVRSAVE).addReg(InVRSAVE);
BuildMI(EntryBB, IP, TII.get(PPC::MTVRSAVE)).addReg(UpdatedVRSAVE);
// Find all return blocks, outputting a restore in each epilog.
for (MachineFunction::iterator BB = Fn.begin(), E = Fn.end(); BB != E; ++BB) {
- if (!BB->empty() && TII.isReturn(BB->back().getOpcode())) {
+ if (!BB->empty() && BB->back().getDesc().isReturn()) {
IP = BB->end(); --IP;
// Skip over all terminator instructions, which are part of the return
// sequence.
MachineBasicBlock::iterator I2 = IP;
- while (I2 != BB->begin() && TII.isTerminatorInstr((--I2)->getOpcode()))
+ while (I2 != BB->begin() && (--I2)->getDesc().isTerminator())
IP = I2;
// Emit: MTVRSAVE InVRSave
// Insert the set of GlobalBaseReg into the first MBB of the function
MachineBasicBlock &FirstMBB = BB->getParent()->front();
MachineBasicBlock::iterator MBBI = FirstMBB.begin();
- SSARegMap *RegMap = BB->getParent()->getSSARegMap();
if (PPCLowering.getPointerTy() == MVT::i32) {
- GlobalBaseReg = RegMap->createVirtualRegister(PPC::GPRCRegisterClass);
+ GlobalBaseReg = RegInfo->createVirtualRegister(PPC::GPRCRegisterClass);
BuildMI(FirstMBB, MBBI, TII.get(PPC::MovePCtoLR), PPC::LR);
BuildMI(FirstMBB, MBBI, TII.get(PPC::MFLR), GlobalBaseReg);
} else {
- GlobalBaseReg = RegMap->createVirtualRegister(PPC::G8RCRegisterClass);
+ GlobalBaseReg = RegInfo->createVirtualRegister(PPC::G8RCRegisterClass);
BuildMI(FirstMBB, MBBI, TII.get(PPC::MovePCtoLR8), PPC::LR8);
BuildMI(FirstMBB, MBBI, TII.get(PPC::MFLR8), GlobalBaseReg);
}
SDOperand Op0 = N->getOperand(0);
SDOperand Op1 = N->getOperand(1);
- uint64_t LKZ, LKO, RKZ, RKO;
- CurDAG->ComputeMaskedBits(Op0, 0xFFFFFFFFULL, LKZ, LKO);
- CurDAG->ComputeMaskedBits(Op1, 0xFFFFFFFFULL, RKZ, RKO);
+ APInt LKZ, LKO, RKZ, RKO;
+ CurDAG->ComputeMaskedBits(Op0, APInt::getAllOnesValue(32), LKZ, LKO);
+ CurDAG->ComputeMaskedBits(Op1, APInt::getAllOnesValue(32), RKZ, RKO);
- unsigned TargetMask = LKZ;
- unsigned InsertMask = RKZ;
+ unsigned TargetMask = LKZ.getZExtValue();
+ unsigned InsertMask = RKZ.getZExtValue();
if ((TargetMask | InsertMask) == 0xFFFFFFFF) {
unsigned Op0Opc = Op0.getOpcode();
/// getCRIdxForSetCC - Return the index of the condition register field
/// associated with the SetCC condition, and whether or not the field is
/// treated as inverted. That is, lt = 0; ge = 0 inverted.
-static unsigned getCRIdxForSetCC(ISD::CondCode CC, bool& Inv) {
+///
+/// If this returns with Other != -1, then the returned comparison is an or of
+/// two simpler comparisons. In this case, Invert is guaranteed to be false.
+static unsigned getCRIdxForSetCC(ISD::CondCode CC, bool &Invert, int &Other) {
+ Invert = false;
+ Other = -1;
switch (CC) {
default: assert(0 && "Unknown condition!"); abort();
- case ISD::SETOLT: // FIXME: This is incorrect see PR642.
- case ISD::SETULT:
- case ISD::SETLT: Inv = false; return 0;
- case ISD::SETOGE: // FIXME: This is incorrect see PR642.
+ case ISD::SETOLT:
+ case ISD::SETLT: return 0; // Bit #0 = SETOLT
+ case ISD::SETOGT:
+ case ISD::SETGT: return 1; // Bit #1 = SETOGT
+ case ISD::SETOEQ:
+ case ISD::SETEQ: return 2; // Bit #2 = SETOEQ
+ case ISD::SETUO: return 3; // Bit #3 = SETUO
case ISD::SETUGE:
- case ISD::SETGE: Inv = true; return 0;
- case ISD::SETOGT: // FIXME: This is incorrect see PR642.
- case ISD::SETUGT:
- case ISD::SETGT: Inv = false; return 1;
- case ISD::SETOLE: // FIXME: This is incorrect see PR642.
+ case ISD::SETGE: Invert = true; return 0; // !Bit #0 = SETUGE
case ISD::SETULE:
- case ISD::SETLE: Inv = true; return 1;
- case ISD::SETOEQ: // FIXME: This is incorrect see PR642.
- case ISD::SETUEQ:
- case ISD::SETEQ: Inv = false; return 2;
- case ISD::SETONE: // FIXME: This is incorrect see PR642.
+ case ISD::SETLE: Invert = true; return 1; // !Bit #1 = SETULE
case ISD::SETUNE:
- case ISD::SETNE: Inv = true; return 2;
- case ISD::SETO: Inv = true; return 3;
- case ISD::SETUO: Inv = false; return 3;
+ case ISD::SETNE: Invert = true; return 2; // !Bit #2 = SETUNE
+ case ISD::SETO: Invert = true; return 3; // !Bit #3 = SETO
+ case ISD::SETULT: Other = 0; return 3; // SETOLT | SETUO
+ case ISD::SETUGT: Other = 1; return 3; // SETOGT | SETUO
+ case ISD::SETUEQ: Other = 2; return 3; // SETOEQ | SETUO
+ case ISD::SETOGE: Other = 1; return 2; // SETOGT | SETOEQ
+ case ISD::SETOLE: Other = 0; return 2; // SETOLT | SETOEQ
+ case ISD::SETONE: Other = 0; return 1; // SETOLT | SETOGT
}
return 0;
}
}
bool Inv;
- unsigned Idx = getCRIdxForSetCC(CC, Inv);
+ int OtherCondIdx;
+ unsigned Idx = getCRIdxForSetCC(CC, Inv, OtherCondIdx);
SDOperand CCReg = SelectCC(N->getOperand(0), N->getOperand(1), CC);
SDOperand IntCR;
CCReg = CurDAG->getCopyToReg(CurDAG->getEntryNode(), CR7Reg, CCReg,
InFlag).getValue(1);
- if (TLI.getTargetMachine().getSubtarget<PPCSubtarget>().isGigaProcessor())
+ if (PPCSubTarget.isGigaProcessor() && OtherCondIdx == -1)
IntCR = SDOperand(CurDAG->getTargetNode(PPC::MFOCRF, MVT::i32, CR7Reg,
CCReg), 0);
else
SDOperand Ops[] = { IntCR, getI32Imm((32-(3-Idx)) & 31),
getI32Imm(31), getI32Imm(31) };
- if (!Inv) {
+ if (OtherCondIdx == -1 && !Inv)
return CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Ops, 4);
- } else {
- SDOperand Tmp =
- SDOperand(CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, Ops, 4), 0);
+
+ // Get the specified bit.
+ SDOperand Tmp =
+ SDOperand(CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, Ops, 4), 0);
+ if (Inv) {
+ assert(OtherCondIdx == -1 && "Can't have split plus negation");
return CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Tmp, getI32Imm(1));
}
+
+ // Otherwise, we have to turn an operation like SETONE -> SETOLT | SETOGT.
+ // We already got the bit for the first part of the comparison (e.g. SETULE).
+
+ // Get the other bit of the comparison.
+ Ops[1] = getI32Imm((32-(3-OtherCondIdx)) & 31);
+ SDOperand OtherCond =
+ SDOperand(CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, Ops, 4), 0);
+
+ return CurDAG->SelectNodeTo(N, PPC::OR, MVT::i32, Tmp, OtherCond);
}
SDOperand InFlag = N->getOperand(1);
AddToISelQueue(InFlag);
// Use MFOCRF if supported.
- if (TLI.getTargetMachine().getSubtarget<PPCSubtarget>().isGigaProcessor())
+ if (PPCSubTarget.isGigaProcessor())
return CurDAG->getTargetNode(PPC::MFOCRF, MVT::i32,
N->getOperand(0), InFlag);
else
case ISD::LOAD: {
// Handle preincrement loads.
LoadSDNode *LD = cast<LoadSDNode>(Op);
- MVT::ValueType LoadedVT = LD->getLoadedVT();
+ MVT LoadedVT = LD->getMemoryVT();
// Normal loads are handled by code generated from the .td file.
if (LD->getAddressingMode() != ISD::PRE_INC)
bool isSExt = LD->getExtensionType() == ISD::SEXTLOAD;
if (LD->getValueType(0) != MVT::i64) {
// Handle PPC32 integer and normal FP loads.
- assert(!isSExt || LoadedVT == MVT::i16 && "Invalid sext update load");
- switch (LoadedVT) {
+ assert((!isSExt || LoadedVT == MVT::i16) && "Invalid sext update load");
+ switch (LoadedVT.getSimpleVT()) {
default: assert(0 && "Invalid PPC load type!");
case MVT::f64: Opcode = PPC::LFDU; break;
case MVT::f32: Opcode = PPC::LFSU; break;
}
} else {
assert(LD->getValueType(0) == MVT::i64 && "Unknown load result type!");
- assert(!isSExt || LoadedVT == MVT::i16 && "Invalid sext update load");
- switch (LoadedVT) {
+ assert((!isSExt || LoadedVT == MVT::i16) && "Invalid sext update load");
+ switch (LoadedVT.getSimpleVT()) {
default: assert(0 && "Invalid PPC load type!");
case MVT::i64: Opcode = PPC::LDU; break;
case MVT::i32: Opcode = PPC::LWZU8; break;
// Op #2 is the CR#
// Op #3 is the Dest MBB
AddToISelQueue(N->getOperand(4)); // Op #4 is the Flag.
- SDOperand Ops[] = { N->getOperand(1), N->getOperand(2), N->getOperand(3),
+ // Prevent PPC::PRED_* from being selected into LI.
+ SDOperand Pred =
+ getI32Imm(cast<ConstantSDNode>(N->getOperand(1))->getValue());
+ SDOperand Ops[] = { Pred, N->getOperand(2), N->getOperand(3),
N->getOperand(0), N->getOperand(4) };
return CurDAG->SelectNodeTo(N, PPC::BCC, MVT::Other, Ops, 5);
}
projects / oota-llvm.git / blobdiff