Skip to Main Content
Idaho State University

Glossary

Filter:
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
R
R&D
RAC
RAM
RAT
RC4
RD
RED
REL
RF
RFC
RFE
RFP
RKV
RL
RMR
RO
ROM
RPM
RQT
RSA
Rsh
RSN
RTI
RTM
RTS
Run
RWX
Register Dancing
  • n. Many older processor architectures suffer from a serious shortage of general-purpose registers. This is especially a problem for compiler-writers, because their generated code needs places to store temporaries for things like intermediate values in expression evaluation. Some designs with this problem, like the Intel 80x86, do have a handful of special-purpose registers that can be pressed into service, providing suitable care is taken to avoid unpleasant side effects on the state of the processor while the special-purpose register is being used to hold an intermediate value, a delicate minuet is required in which the previous value of the register is saved and then restored just before the official function (and value) of the special-purpose register is again needed.