diff options
Diffstat (limited to 'backend/lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | backend/lib/CodeGen/MachineCSE.cpp | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/backend/lib/CodeGen/MachineCSE.cpp b/backend/lib/CodeGen/MachineCSE.cpp index 52a1484..30129bc 100644 --- a/backend/lib/CodeGen/MachineCSE.cpp +++ b/backend/lib/CodeGen/MachineCSE.cpp @@ -149,24 +149,7 @@ template <typename ValueT> return true; } -[[nodiscard]] bool hasFloatingRegister(const MachineInstr &Instruction, - const MachineRegisterInfo &Registers) { - for (const MachineOperand &Operand : Instruction.operands()) { - const Register *Reg = Operand.getIf<Register>(); - if (Reg == nullptr || !Reg->isVirtual()) - continue; - auto Info = Registers.virtualRegisterInfo(*Reg); - if (Info) { - const auto &Type = Info->get().Type; - if (Type && Type->isFloat()) - return true; - } - } - return false; -} - [[nodiscard]] Expected<bool> isCandidate(const MachineInstr &Instruction, - const MachineFunction &Function, const TargetDescription &Target) { const InstructionDescriptor *Descriptor = Target.instructionDescriptor(Instruction.opcode()); if (Descriptor == nullptr) { @@ -187,8 +170,8 @@ template <typename ValueT> return false; if (!Flags.has(InstructionFlag::MayLoad) && !Instruction.memOperands().empty()) return false; - if (!Instruction.flags().has(MachineInstrFlag::NoFPExcept) && - hasFloatingRegister(Instruction, Function.registerInfo())) { + if (Flags.has(InstructionFlag::MayRaiseFPException) && + !Instruction.flags().has(MachineInstrFlag::NoFPExcept)) { return false; } @@ -351,7 +334,7 @@ MachineCSEPass::runImplementation(MachineFunction &Function, const TargetDescrip Block = Block->next()) { for (MachineInstr *Instruction = Block->firstInstruction(); Instruction != nullptr;) { MachineInstr *Next = Instruction->next(); - auto Candidate = isCandidate(*Instruction, Function, Target); + auto Candidate = isCandidate(*Instruction, Target); if (!Candidate) return std::unexpected(Candidate.error()); if (!*Candidate) { |