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Add an AddOptionalDefs method and use it.

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llvm-svn: 111489
This commit is contained in:
Eric Christopher 2010-08-19 00:37:05 +00:00
parent 7c1d941155
commit b80df4f04e
1 changed files with 64 additions and 21 deletions
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85
lib/Target/ARM/ARMFastISel.cpp
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@ -14,6 +14,7 @@
//===----------------------------------------------------------------------===//
#include "ARM.h"
#include "ARMBaseInstrInfo.h"
#include "ARMRegisterInfo.h"
#include "ARMTargetMachine.h"
#include "ARMSubtarget.h"
@ -98,18 +99,60 @@ class ARMFastISel : public FastISel {
#include "ARMGenFastISel.inc"
};
private:
bool DefinesOptionalPredicate(MachineInstr *MI, bool *CPSR);
const MachineInstrBuilder &AddOptionalDefs(const MachineInstrBuilder &MIB);
};
} // end anonymous namespace
// #include "ARMGenCallingConv.inc"
// DefinesOptionalPredicate - This is different from DefinesPredicate in that
// we don't care about implicit defs here, just places we'll need to add a
// default CCReg argument. Sets CPSR if we're setting CPSR instead of CCR.
bool ARMFastISel::DefinesOptionalPredicate(MachineInstr *MI, bool *CPSR) {
const TargetInstrDesc &TID = MI->getDesc();
if (!TID.hasOptionalDef())
return false;
// Look to see if our OptionalDef is defining CPSR or CCR.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
if (MO.isDef() && MO.isReg() && MO.getReg() == ARM::CPSR)
*CPSR = true;
}
return true;
}
// If the machine is predicable go ahead and add the predicate operands, if
// it needs default CC operands add those.
const MachineInstrBuilder &
ARMFastISel::AddOptionalDefs(const MachineInstrBuilder &MIB) {
MachineInstr *MI = &*MIB;
// Do we use a predicate?
if (TII.isPredicable(MI))
AddDefaultPred(MIB);
// Do we optionally set a predicate? Preds is size > 0 iff the predicate
// defines CPSR. All other OptionalDefines in ARM are the CCR register.
bool CPSR;
if (DefinesOptionalPredicate(MI, &CPSR)) {
if (CPSR)
AddDefaultT1CC(MIB);
else
AddDefaultCC(MIB);
}
return MIB;
}
unsigned ARMFastISel::FastEmitInst_(unsigned MachineInstOpcode,
const TargetRegisterClass* RC) {
unsigned ResultReg = createResultReg(RC);
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg));
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg));
return ResultReg;
}
@ -120,12 +163,12 @@ unsigned ARMFastISel::FastEmitInst_r(unsigned MachineInstOpcode,
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
.addReg(Op0, Op0IsKill * RegState::Kill));
else {
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
.addReg(Op0, Op0IsKill * RegState::Kill));
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(TargetOpcode::COPY), ResultReg)
.addReg(II.ImplicitDefs[0]));
}
@ -140,14 +183,14 @@ unsigned ARMFastISel::FastEmitInst_rr(unsigned MachineInstOpcode,
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addReg(Op1, Op1IsKill * RegState::Kill));
else {
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addReg(Op1, Op1IsKill * RegState::Kill));
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(TargetOpcode::COPY), ResultReg)
.addReg(II.ImplicitDefs[0]));
}
@ -162,14 +205,14 @@ unsigned ARMFastISel::FastEmitInst_ri(unsigned MachineInstOpcode,
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addImm(Imm));
else {
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addImm(Imm));
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(TargetOpcode::COPY), ResultReg)
.addReg(II.ImplicitDefs[0]));
}
@ -184,14 +227,14 @@ unsigned ARMFastISel::FastEmitInst_rf(unsigned MachineInstOpcode,
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addFPImm(FPImm));
else {
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addFPImm(FPImm));
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(TargetOpcode::COPY), ResultReg)
.addReg(II.ImplicitDefs[0]));
}
@ -207,16 +250,16 @@ unsigned ARMFastISel::FastEmitInst_rri(unsigned MachineInstOpcode,
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addReg(Op1, Op1IsKill * RegState::Kill)
.addImm(Imm));
else {
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
.addReg(Op0, Op0IsKill * RegState::Kill)
.addReg(Op1, Op1IsKill * RegState::Kill)
.addImm(Imm));
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(TargetOpcode::COPY), ResultReg)
.addReg(II.ImplicitDefs[0]));
}
@ -230,12 +273,12 @@ unsigned ARMFastISel::FastEmitInst_i(unsigned MachineInstOpcode,
const TargetInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
.addImm(Imm));
else {
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
.addImm(Imm));
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(TargetOpcode::COPY), ResultReg)
.addReg(II.ImplicitDefs[0]));
}
@ -248,7 +291,7 @@ unsigned ARMFastISel::FastEmitInst_extractsubreg(MVT RetVT,
unsigned ResultReg = createResultReg(TLI.getRegClassFor(RetVT));
assert(TargetRegisterInfo::isVirtualRegister(Op0) &&
"Cannot yet extract from physregs");
AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt,
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt,
DL, TII.get(TargetOpcode::COPY), ResultReg)
.addReg(Op0, getKillRegState(Op0IsKill), Idx));
return ResultReg;