Unsigned saturating increment scalar by active predicate element count.
Counts the number of active elements in the source predicate and then uses the result to increment the scalar destination. The result is saturated to the general-purpose register's unsigned integer range.
It has encodings from 2 classes: 32-bit and 64-bit
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | size | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | Pg | Rdn |
if !HaveSVE() then UNDEFINED; integer esize = 8 << UInt(size); integer g = UInt(Pg); integer dn = UInt(Rdn); boolean unsigned = TRUE; integer ssize = 32;
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | size | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | Pg | Rdn |
if !HaveSVE() then UNDEFINED; integer esize = 8 << UInt(size); integer g = UInt(Pg); integer dn = UInt(Rdn); boolean unsigned = TRUE; integer ssize = 64;
<Wdn> |
Is the 32-bit name of the source and destination general-purpose register, encoded in the "Rdn" field. |
<Xdn> |
Is the 64-bit name of the source and destination general-purpose register, encoded in the "Rdn" field. |
<Pg> |
Is the name of the governing scalable predicate register, encoded in the "Pg" field. |
<T> |
Is the size specifier,
encoded in
size:
|
CheckSVEEnabled(); integer elements = VL DIV esize; bits(PL) mask = P[g]; bits(ssize) operand = X[dn]; bits(ssize) result; integer count = 0; for e = 0 to elements-1 if ElemP[mask, e, esize] == '1' then count = count + 1; integer element = Int(operand, unsigned); (result, -) = SatQ(element + count, ssize, unsigned); X[dn] = Extend(result, 64, unsigned);
Internal version only: isa v30.41, AdvSIMD v27.08, pseudocode r8p5_00bet2_rc5, sve v8.5-00bet10_rc5 ; Build timestamp: 2019-03-28T07:14
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