tree 84653473bf4039d0cba9065fbdefdca43ac45ac5
parent c3fecd4520555dfaf6a3836f791e638de1412e28
author Daniel R. Carvalho <odanrc@yahoo.com.br> 1576423455 +0100
committer Daniel Carvalho <odanrc@yahoo.com.br> 1576925888 +0000

base: Fix negative op-assign of SatCounter

The value of the add and subtract assignment operations can be negative,
and this was not being handled properly previously. Regarding shift
assignment, the standard says it is undefined behaviour if a negative
number is given, so add assertions for these cases.

Change-Id: I2f1e4143c6385caa80fb25f84ca8edb0ca7e62b7
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23664
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>