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| author | Dylan McKay <dylanmckay34@gmail.com> | 2016-10-05 13:27:30 +0000 |
|---|---|---|
| committer | Dylan McKay <dylanmckay34@gmail.com> | 2016-10-05 13:27:30 +0000 |
| commit | 82ef77091c1d77d1ebdb353ee275dd452afe7ba5 (patch) | |
| tree | ba940a806b5e916441187f182590e5d54d044cea /llvm/lib/Target/AVR/AVRRegisterInfo.cpp | |
| parent | e7c72cdbb0ba7f1ac3ef85b972ad524f79c46af9 (diff) | |
| download | bcm5719-llvm-82ef77091c1d77d1ebdb353ee275dd452afe7ba5.tar.gz bcm5719-llvm-82ef77091c1d77d1ebdb353ee275dd452afe7ba5.zip | |
[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
Diffstat (limited to 'llvm/lib/Target/AVR/AVRRegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AVR/AVRRegisterInfo.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
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 + |
