Shift-Left Verification

Concept

Shift-Left Verification is a verification methodology that moves test generation, validation, and coverage analysis earlier in the design cycle. In the supplied RISC-V verification evidence, it is enabled by portable stimulus that can begin in simulation and be reused through emulation, FPGA prototyping, and silicon, reducing late-stage risk and allowing tests created during RTL bring-up to remain useful in later validation stages.

First seen 5/25/2026

Last seen 5/26/2026

Evidence 3 chunks

Wiki v1

WIKI

Definition

Shift-Left Verification is a methodology in which test generation and validation are moved earlier in the design cycle. The supplied evidence describes this in the context of RISC-V processor verification, where portable stimulus allows tests to start in simulation and then be reused in emulation, FPGA prototyping, and silicon, reducing late-stage risk. [C1]

Role in the Verification Flow

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NEIGHBORHOOD

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RELATIONSHIPS

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ImperasSC ← implements 97% 2e

ImperasSC enables coverage analysis to begin before RTL is available, enabling a shift-left verification approach.

LINKED ENTITIES

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ImperasSC ENABLES Extracted graph relationship

RTL TARGETS Extracted graph relationship

STING USES_PORTABLE_STIMULUS_FROM The evidence describes STING as generating portable, self-checking RISC-V programs across simulation, emulation, FPGA prototypes, and silicon, which supports the portability aspect of shift-left verification.

CITATIONS

5 sources

5 citations — click to expand

[1] C1: Shift-Left Verification definition and late-stage risk reduction source

[2] C2: Tests developed during RTL bring-up remain useful in later validation and silicon source

[3] C3: Tests are portable across simulation, ZeBu emulation, HAPS FPGA prototyping, and silicon source

[4] C4: ImperasSC enables pre-RTL coverage analysis and moves validation earlier source

[5] C5: STING generates portable, self-checking RISC-V programs across simulation, emulation, FPGA prototypes, and silicon source