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[Hexagon] Handle J2_jumptpt and J2_jumpfpt in HexagonInstrInfo

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llvm-svn: 302033
This commit is contained in:
Krzysztof Parzyszek 2017-05-03 15:30:46 +00:00
parent 12eadb6d09
commit d25fb36bf5
1 changed files with 25 additions and 8 deletions
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33
lib/Target/Hexagon/HexagonInstrInfo.cpp
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@ -3061,12 +3061,14 @@ bool HexagonInstrInfo::predCanBeUsedAsDotNew(const MachineInstr &MI,
}
bool HexagonInstrInfo::PredOpcodeHasJMP_c(unsigned Opcode) const {
return (Opcode == Hexagon::J2_jumpt) ||
(Opcode == Hexagon::J2_jumpf) ||
(Opcode == Hexagon::J2_jumptnew) ||
(Opcode == Hexagon::J2_jumpfnew) ||
(Opcode == Hexagon::J2_jumptnewpt) ||
(Opcode == Hexagon::J2_jumpfnewpt);
return Opcode == Hexagon::J2_jumpt ||
Opcode == Hexagon::J2_jumptpt ||
Opcode == Hexagon::J2_jumpf ||
Opcode == Hexagon::J2_jumpfpt ||
Opcode == Hexagon::J2_jumptnew ||
Opcode == Hexagon::J2_jumpfnew ||
Opcode == Hexagon::J2_jumptnewpt ||
Opcode == Hexagon::J2_jumpfnewpt;
}
bool HexagonInstrInfo::predOpcodeHasNot(ArrayRef<MachineOperand> Cond) const {
@ -3613,11 +3615,11 @@ int HexagonInstrInfo::getDotNewPredOp(const MachineInstr &MI,
}
int HexagonInstrInfo::getDotOldOp(const MachineInstr &MI) const {
const MachineFunction &MF = *MI.getParent()->getParent();
const HexagonSubtarget &HST = MF.getSubtarget<HexagonSubtarget>();
int NewOp = MI.getOpcode();
if (isPredicated(NewOp) && isPredicatedNew(NewOp)) { // Get predicate old form
NewOp = Hexagon::getPredOldOpcode(NewOp);
const MachineFunction &MF = *MI.getParent()->getParent();
const HexagonSubtarget &HST = MF.getSubtarget<HexagonSubtarget>();
// All Hexagon architectures have prediction bits on dot-new branches,
// but only Hexagon V60+ has prediction bits on dot-old ones. Make sure
// to pick the right opcode when converting back to dot-old.
@ -3645,6 +3647,21 @@ int HexagonInstrInfo::getDotOldOp(const MachineInstr &MI) const {
NewOp = Hexagon::getNonNVStore(NewOp);
assert(NewOp >= 0 && "Couldn't change new-value store to its old form.");
}
if (HST.hasV60TOps())
return NewOp;
// Subtargets prior to V60 didn't support 'taken' forms of predicated jumps.
switch (NewOp) {
case Hexagon::J2_jumpfpt:
return Hexagon::J2_jumpf;
case Hexagon::J2_jumptpt:
return Hexagon::J2_jumpt;
case Hexagon::J2_jumprfpt:
return Hexagon::J2_jumprf;
case Hexagon::J2_jumprtpt:
return Hexagon::J2_jumprt;
}
return NewOp;
}