abbreviation
缩写 & abbreviation¶
LTO（LinkTimeOptimization）¶
https://gcc.gnu.org/wiki/LinkTimeOptimization
PGO/PDF/FDO¶
Profile-guided optimization (PGO, sometimes pronounced as pogo[1]), also known as profile-directed feedback (PDF),[2] and feedback-directed optimization (FDO)[3] is a compiler optimization technique in computer programming that uses profiling to improve program runtime performance.
PDF开再高的优化都不会自动执行，必须用户手工跑多次执行。
PTF(Program temporary fix)¶
https://en.wikipedia.org/wiki/Program_temporary_fix
NFC(No Functionality Change)¶
代码不影响功能时，加上NFC，这种pr一般不需要加test case。
WIP(Work In Process)¶
CSR(Control/Status Register)¶
CSR(Callee Saved Register)¶
TBI(To Be Investigate)¶
The LLVM Lexicon¶
https://llvm.org/docs/Lexicon.html
ABI: PPC-elf64ABI(各种寄寄器怎么用的，怎么传参等)¶
https://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html#REG