Merge remote-tracking branch 'origin/ldpc_enc_avx512' into integration_2025_w20 (3168)

Improvements for LDPC encoding

AVX512 modifications for LDPC encoding: interleaving, ZC384 BG1, output
formatting for encoder, segmentation (memcpy instead of loop). some
improvement in TX for aarch64 in same places where AVX512 support was
added. Also, rate matching and interleaving are done on bytes containing
8 segments and reformatting of the output is done at the end of segment
processing instead of after ldpc encoding.

This improves the overall performance of the NR DL transmitter in gNB

See the merge request description for numbers.

ci-scripts/datalog_rt_stats.100.2x2.yaml

@@ -11,8 +11,8 @@ Ref :
   feptx_prec : 0.0
   feptx_ofdm : 60.0
   feptx_total : 150.0
-  L1 Tx processing : 530.0
-  DLSCH encoding : 220.0
+  L1 Tx processing : 475.0
+  DLSCH encoding : 200.0
   L1 Rx processing : 530.0
   PUSCH inner-receiver : 360.0
   Schedule Response : 1.0

ci-scripts/datalog_rt_stats.1x1.60.yaml

@@ -11,8 +11,8 @@ Ref :
   feptx_prec : 15.0
   feptx_ofdm : 30.0
   feptx_total : 45.0
-  L1 Tx processing : 205.0
-  DLSCH encoding : 140.0
+  L1 Tx processing : 175.0
+  DLSCH encoding : 110.0
   L1 Rx processing : 345.0
   PUSCH inner-receiver : 150.0
   Schedule Response : 1.0

ci-scripts/datalog_rt_stats.60.2x2.yaml

@@ -11,8 +11,8 @@ Ref :
   feptx_prec : 14.0
   feptx_ofdm : 30.0
   feptx_total : 80.0
-  L1 Tx processing : 315.0
-  DLSCH encoding : 155.0
+  L1 Tx processing : 280.0
+  DLSCH encoding : 140.0
   L1 Rx processing : 345.0
   PUSCH inner-receiver : 155.0
   Schedule Response : 1.0

ci-scripts/datalog_rt_stats.default.yaml

@@ -11,8 +11,8 @@ Ref :
   feptx_prec : 13.0
   feptx_ofdm : 30.0
   feptx_total : 45.0
-  L1 Tx processing : 160.0
-  DLSCH encoding : 100.0
+  L1 Tx processing : 145.0
+  DLSCH encoding : 90.0
   L1 Rx processing : 290.0
   PUSCH inner-receiver : 115.0
   Schedule Response : 1.0