We used to allow reg+reg addresses for QImode and HImode; however,
they tended to cause the register allocator to run out of registers.
Basically, an indexed load/store always keeps 2 data and one address
- register live, which is just too many for this machine. */
+ register live, which is just too many for this machine.
The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
except for CONSTANT_ADDRESS_P which is actually machine-independent. */