[webkit-dev] Offline Assembler build step always computes hashes even when nothing changes

[Michael Saboff]

Darin,

I can take a look at this.

Filed <https://bugs.webkit.org/show_bug.cgi?id=189654 <https://bugs.webkit.org/show_bug.cgi?id=189654>> “Offline assembler always computes hashes even when nothing changes"

- Michael

> On Sep 16, 2018, at 4:03 PM, Darin Adler <darin at apple.com <mailto:darin at apple.com>> wrote:
> 
> I noticed that the “Offline Assembler” build step was taking between 5 and 30 seconds every time I build. Really stands out in incremental builds. I realized that this step does not do any dependency analysis. Every time, it builds a hash of the input to see if it needs to recompute the assembly.
> 
> That’s probably not the best pattern; normally we like to use file modification dates to avoid doing any work when files haven’t changed.
> 
> Is there someone who can help me fix this so we get faster incremental builds?
> 
> — Darin
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