s_barrier_signal_isfirst GPU Native ISA AMD Scalar

S BARRIER SIGNAL ISFIRST Scalar Arithmetic

s_barrier_signal_isfirst

Signal that a wave has arrived at a barrier and set SCC to indicate if this is the first wave to signal the barrier.

Encoding

Verified bit-level encoding data is not yet available for this instruction. The instruction-format classification below (SOP1) is well-documented and stable; exact per-target opcode/field bit positions have not yet been imported from a verified source.
Format SOP1
Execution Unit

Operands

Operand details have not yet been curated for this instruction.

GFX Target Compatibility

Per-target GFX compatibility has not yet been verified for this instruction.

Related

More in Scalar Arithmetic

Reference

AMDGPU / GFX ISA

Description

Signal that a wave has arrived at a barrier and set SCC to indicate if this is the first wave to signal the barrier. The argument specifies which barrier to signal.

Sources