py/emitnative: Improve Viper register-indexed code for Thumb.

This commit lets the Viper code generator use optimised code sequence
for register-indexed load and store operations when generating Thumb
code.

Register-indexed load and store operations for Thumb now can take at
most two machine opcodes for halfword and word values, and just a single
machine opcode for byte values.  The original implementation could
generate up to four opcodes in the worst case (dealing with word
values).

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

0 files changed, 0 insertions, 0 deletions