speculative execution

Concept

Speculative execution is identified in the evidence as a high-performance processor microarchitecture technique. In RISC-V processor development, it is discussed alongside out-of-order execution as a source of added verification complexity and possible security exposure, including vulnerabilities such as Spectre and Meltdown.

First seen 5/27/2026

Last seen 6/5/2026

Evidence 4 chunks

Wiki v1

WIKI

Overview

Speculative execution is a processor microarchitecture technique associated with improving performance. In the provided evidence, it is listed with out-of-order execution as a common technique used for higher performance in CPU designs. [Speculative execution as performance technique]

Relevance to RISC-V microarchitecture

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NEIGHBORHOOD

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RELATIONSHIPS

5 connections

BRVer ← evaluates 95% 2e

BRVer targets branch mechanisms related to speculative execution.

superscalar processor part of → 85% 2e

Speculative execution is an advanced feature of superscalar processors.

Spectre mentions → 93% 1e

Speculative execution exposes potential security vulnerabilities such as Spectre.

Meltdown mentions → 93% 1e

Speculative execution exposes potential security vulnerabilities such as Meltdown.

RISC-V ← mentions 88% 1e

RISC-V implementations using speculative execution increase complexity and security risks.

LINKED ENTITIES

3 links

Spectre MENTIONS Extracted graph relationship

Meltdown MENTIONS Extracted graph relationship

RISC-V MENTIONS Extracted graph relationship

CITATIONS

5 sources

5 citations — click to expand

[1] Speculative execution as performance technique RISC-V Microarchitecture Verification Approaches

[2] RISC-V verification context RISC-V Microarchitecture Verification Approaches

[3] Speculative execution increases verification complexity RISC-V Microarchitecture Verification Approaches

[4] Processor verification requires more than simulation RISC-V Microarchitecture Verification Approaches

[5] Speculative execution security vulnerabilities RISC-V Microarchitecture Verification Approaches