| AI Engine-ML v2 Intrinsics User Guide (v2026.1)

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Undefined simplifications
Compiler optimizations » Code optimizations

Replaces an undef_* that is immediately followed by an upd_* with a set_*.

Example:

v8acc64 a = ...; // bmlhX
v32acc64 b = undef_v32acc64(); // dmX
v32acc64 out = upd_v32acc64(b, 1, a);
v32acc64
Definition me_chess.h:639
v8acc64
Definition me_chess.h:629
undef_v32acc64
v32acc64 undef_v32acc64()
v8acc64 a = ...; // bmlhX
v32acc64 out = set_v32acc64(1, a); // dmX
set_v32acc64
v32acc64 set_v32acc64(int idx, v8acc64 b)
Definition me_upd_ext.h:4442