| AI Engine-ML v2 Intrinsics User Guide v2025.2

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Chain simplification
Compiler optimizations » Code optimizations

Removes chain of dependency between a set_* or upd_* and a ext_* expression that refer to the same accumulator component. The extract operation may have finer granularity.

Example:

v16acc64 in = ...; //cmYX
v32acc64 a = set_v32acc64(0, in); // dmX
v8acc64 out = extract_v8acc64(1, a); // bmlhX
v16acc64
Definition me_chess.h:634
v32acc64
Definition me_chess.h:639
v8acc64
Definition me_chess.h:629
extract_v8acc64
v8acc64 extract_v8acc64(v16acc64 a, int idx)
Definition me_upd_ext.h:3212
set_v32acc64
v32acc64 set_v32acc64(int idx, v8acc64 b)
Definition me_upd_ext.h:4442
v16acc64 in = ...; // cmYX
v32acc64 a = set_v32acc64(0, in); // dmX
v8acc64 out = extract_v8acc64(1, in); // bmlhX