Does v8_enable_fast_mksnapshot affect the output?

[Erik Corry]

Hi

Does v8_enable_fast_mksnapshot change the snapshot that is generated.

I ask because it sets "--no-turbo-verify-allocation" and "--no-turbo-rewrite-far-jumps".  They sound like they change the generated code in the snapshot.

It also sets "--no-enable-slow-asserts", which I don't think changes the generated code.

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Erik Corry

[Jakob Gruber]

On Thu, Oct 10, 2024 at 2:38 PM Erik Corry <erik...@chromium.org> wrote:

Hi

Does v8_enable_fast_mksnapshot change the snapshot that is generated. 

I ask because it sets "--no-turbo-verify-allocation" and "--no-turbo-rewrite-far-jumps".  They sound like they change the generated code in the snapshot.

Yes. 

It also sets "--no-enable-slow-asserts", which I don't think changes the generated code.

This also has significant effect on generated code, see for example the CSA_DCHECK macro. You also may want to look at --serialization-statistics output and out/foo/gen/embedded.S.

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Erik Corry

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