GBE: Optimize extraLiveOut register info.

extraLiveout anlysis is used to detect registers defined in loop and
used out-of the loop. Previous logic may also include registers defined
BEFORE loop and live-through loop as extraLiveout, which is not accurate.
As the extraLiveout registers will be forced as non-uniform, which may
waste some register space. Excluding registers that are defined before loop
while used out-of loop will make such registers get correct uniform/non-uniform
information. This would benefit some gemm cl kernel.

also fix a small issue: do intersection when the exit-block has more
than one predecessors.

Signed-off-by: Ruiling Song <ruiling.song@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@intel.com>

0 files changed, 0 insertions, 0 deletions