BRKNS

Propagate break to next partition, setting the condition flags

If the last active element of the first source predicate is false then set the destination predicate to all-false. Otherwise leaves the destination and second source predicate unchanged. Sets the First (N), None (Z), !Last (C) condition flags based on the predicate result, and the V flag to zero.

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001001010101100001Pg0Pn0Pdm
S

BRKNS <Pdm>.B, <Pg>/Z, <Pn>.B, <Pdm>.B

if !HaveSVE() then UNDEFINED; integer g = UInt(Pg); integer n = UInt(Pn); integer dm = UInt(Pdm); boolean setflags = TRUE;

Assembler Symbols

<Pdm>

Is the name of the second source and destination scalable predicate register, encoded in the "Pdm" field.

<Pg>

Is the name of the governing scalable predicate register, encoded in the "Pg" field.

<Pn>

Is the name of the first source scalable predicate register, encoded in the "Pn" field.

Operation

CheckSVEEnabled(); bits(PL) mask = P[g]; bits(PL) operand1 = P[n]; bits(PL) operand2 = P[dm]; bits(PL) result; if LastActive(mask, operand1, 8) == '1' then result = operand2; else result = Zeros(); if setflags then PSTATE.<N,Z,C,V> = PredTest(Ones(PL), result, 8); P[dm] = result;


Internal version only: isa v32.21, AdvSIMD v29.05, pseudocode v2021-06_xml, sve v2021-06_rc2b ; Build timestamp: 2021-06-28T17:02

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