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-rw-r--r--ethosu/vela/register_command_stream_util.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/ethosu/vela/register_command_stream_util.py b/ethosu/vela/register_command_stream_util.py
index 55fa620c..4cf826d9 100644
--- a/ethosu/vela/register_command_stream_util.py
+++ b/ethosu/vela/register_command_stream_util.py
@@ -463,6 +463,12 @@ def calc_blockdep(arch: ArchitectureFeatures, prev_op: Optional[NpuBlockOperatio
return 0
assert npu_op.ifm is not None
assert prev_op.ofm is not None
+ # Check if the reserved shram will be used in current/prev op
+ prev_uses_lut = prev_op.activation is not None and prev_op.activation.op_type == NpuActivationOp.TABLE_LOOKUP
+ curr_uses_lut = npu_op.activation is not None and npu_op.activation.op_type == NpuActivationOp.TABLE_LOOKUP
+ if prev_uses_lut and arch.shram_reserved_unused_banks == 0 and not curr_uses_lut:
+ return 0
+
# Check if IFM or IFM2 overlaps with prev op's OFM
prev_ofm_ranges = get_address_ranges(prev_op.ofm)
ifm_ranges = get_address_ranges(npu_op.ifm)