pto.pge_b8

pto.pge_b8 is part of the Predicate Generation And Algebra instruction set.

Summary

Construct a 8-bit predicate mask from a documented Pat* token.

Mechanism

The installed 3510 Bisheng CCE header exposes pge_b8 as a pattern-token helper, not as a runtime scalar-threshold compare. The public call surface is vector_bool pge_b8(T dist) where T is one of the documented __cce_simd::Pat* marker types.

This page therefore models pto.pge_b8 as pattern-based predicate materialization: the chosen token determines which lanes are active in the returned predicate register.

Syntax

PTO Assembly Form

%mask = pto.pge_b8 "PAT_VL4" : !pto.mask<b8>

AS Level 1 (SSA)

%mask = pto.pge_b8 "PAT_VL4" : !pto.mask<b8>

AS Level 2 (DPS)

pto.pge_b8 "PAT_VL4" outs(%mask : !pto.mask<b8>)

C++ Intrinsic

vector_bool mask = pge_b8(__cce_simd::PAT_VL4);

Inputs

Operand Type Description
"PAT_*" string attribute Predicate-pattern token such as PAT_ALL, PAT_ALLF, PAT_VL*, PAT_M3, PAT_M4, PAT_H, or PAT_Q

Expected Outputs

Result Type Description
%mask !pto.mask<b8> 8-bit predicate generated from the selected pattern token

Side Effects

None.

Constraints

Constraints

  • The installed public CCE API accepts documented Pat* marker types only; there is no public runtime-scalar overload for pge_b8 in the shipped 3510 header.
  • Programs must use a pattern token that is valid for the selected target profile.
  • This operation materializes a predicate register only; it does not update any scalar input in place.

Exceptions

Exceptions

  • Illegal if the pattern token is not supported by the selected target profile.
  • Illegal if the result is consumed in a predicate-width context that the selected backend does not support.

Target-Profile Restrictions

Target-Profile Restrictions
Aspect CPU Sim A2/A3 A5
Pattern-token predicate generation Simulated Supported Supported
Public CCE surface Emulated Supported Supported

Examples

C++ usage

vector_bool mask = pge_b8(__cce_simd::PAT_VL4);

SSA form

%mask = pto.pge_b8 "PAT_VL4" : !pto.mask<b8>