From 82ef77091c1d77d1ebdb353ee275dd452afe7ba5 Mon Sep 17 00:00:00 2001 From: Dylan McKay Date: Wed, 5 Oct 2016 13:27:30 +0000 Subject: [AVR] Add AVRRegisterInfo::splitReg function No tests are included just yet - this is used from the pseudo instruction expander pass, which hasn't been pulled in-tree yet. llvm-svn: 283316 --- llvm/lib/Target/AVR/AVRRegisterInfo.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'llvm/lib/Target/AVR/AVRRegisterInfo.cpp') diff --git a/llvm/lib/Target/AVR/AVRRegisterInfo.cpp b/llvm/lib/Target/AVR/AVRRegisterInfo.cpp index c119fa4de8d..7f5002f1608 100644 --- a/llvm/lib/Target/AVR/AVRRegisterInfo.cpp +++ b/llvm/lib/Target/AVR/AVRRegisterInfo.cpp @@ -253,4 +253,14 @@ AVRRegisterInfo::getPointerRegClass(const MachineFunction &MF, return &AVR::PTRDISPREGSRegClass; } +void AVRRegisterInfo::splitReg(unsigned Reg, + unsigned &LoReg, + unsigned &HiReg) const { + assert(AVR::DREGSRegClass.contains(Reg) && "can only split 16-bit registers"); + + LoReg = getSubReg(Reg, AVR::sub_lo); + HiReg = getSubReg(Reg, AVR::sub_hi); +} + } // end of namespace llvm + -- cgit v1.2.3