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[Hexagon] Implement HexagonSubtarget::useAA() 

llvm-svn: 319477
This commit is contained in:
Krzysztof Parzyszek 2017-11-30 21:25:28 +00:00
parent 2dddd6004f
commit d76814200b
2 changed files with 14 additions and 1 deletions
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10
llvm/lib/Target/Hexagon/HexagonSubtarget.cpp
View File

@ -92,7 +92,7 @@ static cl::opt<bool> EnableCheckBankConflict("hexagon-check-bank-conflict",
HexagonSubtarget::HexagonSubtarget(const Triple &TT, StringRef CPU,
StringRef FS, const TargetMachine &TM)
: HexagonGenSubtargetInfo(TT, CPU, FS),
: HexagonGenSubtargetInfo(TT, CPU, FS), OptLevel(TM.getOptLevel()),
CPUString(Hexagon_MC::selectHexagonCPU(TT, CPU)),
InstrInfo(initializeSubtargetDependencies(CPU, FS)),
RegInfo(getHwMode()), TLInfo(TM, *this),
@ -294,6 +294,14 @@ void HexagonSubtarget::BankConflictMutation::apply(ScheduleDAGInstrs *DAG) {
}
}
/// \brief Enable use of alias analysis during code generation (during MI
/// scheduling, DAGCombine, etc.).
bool HexagonSubtarget::useAA() const {
if (OptLevel != CodeGenOpt::None)
return true;
return false;
}
/// \brief Perform target specific adjustments to the latency of a schedule
/// dependency.
void HexagonSubtarget::adjustSchedDependency(SUnit *Src, SUnit *Dst,

5
llvm/lib/Target/Hexagon/HexagonSubtarget.h
View File

@ -53,6 +53,7 @@ class HexagonSubtarget : public HexagonGenSubtargetInfo {
public:
Hexagon::ArchEnum HexagonArchVersion;
Hexagon::ArchEnum HexagonHVXVersion = Hexagon::ArchEnum::V4;
CodeGenOpt::Level OptLevel;
/// True if the target should use Back-Skip-Back scheduling. This is the
/// default for V60.
bool UseBSBScheduling;
@ -177,6 +178,10 @@ public:
std::vector<std::unique_ptr<ScheduleDAGMutation>> &Mutations)
const override;
/// \brief Enable use of alias analysis during code generation (during MI
/// scheduling, DAGCombine, etc.).
bool useAA() const override;
/// \brief Perform target specific adjustments to the latency of a schedule
/// dependency.
void adjustSchedDependency(SUnit *def, SUnit *use, SDep& dep) const override;