# Hexagon V85 HLX Programmer’s Reference Manual

Contents

- [Introduction](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html)
    - [SIMD coprocessor](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#simd-coprocessor)
    - [HLX features](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#hlx-features)
- [Memory](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#memory)
    - [Alignment](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#alignment)
    - [VTCM](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#vtcm)
    - [Ordering](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#ordering)
- [HLX instructions](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#hlx-instructions)
    - [Element types](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#element-types)
    - [HLX packet rules](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#hlx-packet-rules)
    - [HLX memory instructions](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#hlx-memory-instructions)
    - [HLX shift instructions](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#hlx-shift-instructions)
    - [64-bit scalar register inputs](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#bit-scalar-register-inputs)
    - [HLX instruction latency](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx.html#hlx-instruction-latency)
- [HLX instruction set](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-instruction-set.html)
    - [Instruction symbols](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-instruction-set.html#instruction-symbols)
    - [Element suffixes](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-instruction-set.html#element-suffixes)
    - [Instruction behavior symbols](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-instruction-set.html#instruction-behavior-symbols)
    - [Temporary loads and new stores](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-instruction-set.html#temporary-loads-and-new-stores)
    - [HLX instruction set architecture](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-instruction-set.html#hlx-instruction-set-architecture)
- [HLX PMU events](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-pmu-events.html)
- [HLX ISA quick reference](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html)
    - [Halfword absolute value](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-absolute-value)
    - [Halfword and word add/subtract](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-and-word-add-subtract)
    - [Halfword widening add/subtract](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-widening-add-subtract)
    - [Halfword add/subtract](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-add-subtract)
    - [Assign](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#assign)
    - [Halfword compare](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-compare)
    - [Halfword to word convert](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-to-word-convert)
    - [Logical operations](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#logical-operations)
    - [Halfword min/max](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-min-max)
    - [Mux select](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#mux-select)
    - [Splat value](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#splat-value)
    - [Absolute value of difference](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#absolute-value-of-difference)
    - [Average](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#average)
    - [Byte converts](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#byte-converts)
    - [Bit counting](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#bit-counting)
    - [Lookup table](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#lookup-table)
    - [Negative average](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#negative-average)
    - [Load - tmp](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#load-tmp)
    - [Multiply-add with high or low](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#multiply-add-with-high-or-low)
    - [Multiply-add](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#multiply-add)
    - [Halfword to word multiply](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-to-word-multiply)
    - [Paired and word absolute value](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#paired-and-word-absolute-value)
    - [Paired halfword add/subtract](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#paired-halfword-add-subtract)
    - [Word add/subtract](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-add-subtract)
    - [Word logical operations](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-logical-operations)
    - [Paired halfword logical compare](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#paired-halfword-logical-compare)
    - [Word compare](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-compare)
    - [Combine](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#combine)
    - [Word min/max](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-min-max)
    - [Paired halfword min/max](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#paired-halfword-min-max)
    - [Halfword bidirectional shift](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-bidirectional-shift)
    - [Word to halfword narrowing bidirectional shift](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-to-halfword-narrowing-bidirectional-shift)
    - [Word bidirectional shift](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-bidirectional-shift)
    - [Word to halfword narrowing right shift](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-to-halfword-narrowing-right-shift)
    - [Halfword bidirectional shift add](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#halfword-bidirectional-shift-add)
    - [Word bidirectional shift add](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#word-bidirectional-shift-add)
    - [Store - new](https://docs.qualcomm.com/doc/80-N3040-23/topic/hlx-quick-reference.html#store-new)

Last Published: Oct 06, 2026

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