Kernel - Kernel - 2026.1 English - UG1448

Vitis HLS Messaging (UG1448)

Document ID: UG1448
Release Date: 2026-06-23
Version: 2026.1 English

General
HLS General - 1
HLS General - 2
Interface
Burst Inference
Burst Inference Failure 1
Burst Inference Failure 2
Burst Inference Failure 3
Burst Inference Failure 4
Burst Inference Failure 5
Burst Inference Failure 6
Burst Inference Failure 7
Burst Inference Failure 8
Burst Inference Failure 9
Burst Inference Failure 10
Burst Inference Failure 11
Burst Inference Failure 12
Burst Inference Failure 13
Burst Inference Failure 14
Disaggregation
Interface Pragma Options
Interface Alignment
Streaming
Streaming
Kernel
Timing - Critical Path
Timing - Critical Path
Long Run Times
Long Run Time
Long Run Time
Timing - Critical Path
Timing - Critical Path
Timing - Critical Path
Timing - Critical Path
Timing - Critical Path
Timing - Critical Path
Timing - Critical Path
Timing - Critical Path
Latency
Loop Merging - FIFO Operations
Loop Merging - Non-Trivial Code
Loop Merging - Exit Condition
Loop Rewind - Initialization Section
Loop Rewind - Functions
Loop Rewind - Continue Statement
Loop Rewind - Multiple Loops
Loop Rewind - Conditional Execution
Loop Rewind - Flatten
Loop Rewind - Return Type
Loop Rewind - Initialization Section
Loop Flatten
Loop Unroll - Variable Trip Count
Loop Unroll - Variable Trip Count
Loop Unroll - Multiple Constraints
Unmet Latency Constraint
Violation of Latency Constraint for Function Calls
Violation of Latency Constraint for Sub Loops
Memory
Conflicting Constraints
Memory Port Contention
Unsupported Array Access
Conflicting Constraints
Throughput
Applying 3x3 Array Stencil Optimization to Variable in a Loop
Automatic Array Partition
Automatic Array Partition
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Apply Array Stencil Optimization
Cannot Locate Memory Object
Cannot Locate Memory Object
Cyclic Dependence
Data FIFO Sizing
Dataflow
Dataflow Bypassing Tasks
Dataflow Canonical Forms
Dataflow Canonical Rules – 1
Dataflow Canonical Rules – 2
Dataflow Canonical Rules – 2
Dataflow Canonical Rules – 2
Dataflow Canonical Rules – 2
Dataflow Performance Issues
Dataflow Performance Issues
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline
Free Running Pipeline Enabled
Performance Pragma - 1
Performance Pragma - 2
Performance Pragma - 3
Performance Pragma - 4
Performance Pragma - 5
Performance Pragma - 6
Performance Pragma - 7
Performance Pragma - 8
Performance Pragma - 9
Performance Pragma - 10
Performance Pragma - 11
Pipeline Constraint Ignored
Pipeline II Violations
Scheduling Principles
Resource Constraints
Mutual Exclusion, Resources, and Predicates
Array Partitioning, Array Reshaping, and Scheduling
Pipeline Scheduling
II-Constrained and Timing-Constrained Scheduling Modes
Pipeline II Violation Warning and Information Messages
Data Dependence and Pipeline Consistency Constraint (HLS 200-880)
Memory Port Resource Constraint (HLS 200-885)
Stream Port Resource Constraint (HLS 200-2199)
Memory Port Resource Constraint (HLS 200-448)
Input-Output Synchronization Constraints (HLS 200-2253)
Loop Exit Constraints (HLS 200-878)
Pipeline Constraint Ignored
Pipeline Styles
Top-Level Dataflow
Unroll Infinite Loop

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