diff options
Diffstat (limited to 'lib/Target/Mips/MipsRegisterBankInfo.h')
| -rw-r--r-- | lib/Target/Mips/MipsRegisterBankInfo.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsRegisterBankInfo.h b/lib/Target/Mips/MipsRegisterBankInfo.h index 176813c031ed..fa0f1c7bc941 100644 --- a/lib/Target/Mips/MipsRegisterBankInfo.h +++ b/lib/Target/Mips/MipsRegisterBankInfo.h @@ -38,8 +38,17 @@ public: const InstructionMapping & getInstrMapping(const MachineInstr &MI) const override; + /// Here we have to narrowScalar s64 operands to s32, combine away G_MERGE or + /// G_UNMERGE and erase instructions that became dead in the process. We + /// manually assign bank to def operand of all new instructions that were + /// created in the process since they will not end up in RegBankSelect loop. void applyMappingImpl(const OperandsMapper &OpdMapper) const override; + /// RegBankSelect determined that s64 operand is better to be split into two + /// s32 operands in gprb. Here we manually set register banks of def operands + /// of newly created instructions since they will not get regbankselected. + void setRegBank(MachineInstr &MI, MachineRegisterInfo &MRI) const; + private: /// Some instructions are used with both floating point and integer operands. /// We assign InstType to such instructions as it helps us to avoid cross bank |