On 09/22/2011 07:43 PM, Georg-Johann Lay wrote:
This patch adds the PLUS part to fix the PR.
addsi3 has a 8-bit scratch register now so that constants that are not covered
by the constraints won't force a reload of the constant.
The output routine tries adding the constant and subtracting the negated
constant and then chooses the shortest sequence. Moreover, if the lower bytes
of the constant are zero, there is no need to add them.
Besides that, the patch adds some add-and-zero-extend patterns.
Passed without regressions.
Ok to commit?
The same can be done for cmp, no?
Paolo
