Status: Untriaged
Owner: ----
New issue 4208 by [email protected]: Problems with very large switch-cases
https://code.google.com/p/v8/issues/detail?id=4208
Version: latest commit on git master:
86594b7da24cce04f0801d8033029414433fb4ed
OS: Ubuntu 15.04 x64
Architecture: x64
What steps will reproduce the problem?
1. Get the latest V8, and compile a ia32.release version (havn't tested
others with this version, but x64.release has the same behaviour for a
previous version)
2. Run one of the below described scenarios.
Scenario 1:
Run regress-324650.js the following way:
"d8 regress-324650.js --always_opt --turbo"
Then the script takes ~2 minutes to run, where it normally (even with
--always_opt, but without --turbo) at most takes a second.
Produces the correct result in the end.
Scenario 2:
Run regress-80981.js the following way:
"d8 regress-80981.js --always_opt --turbo" or "d8 regress-80981.js
--always_osr --turbo"
Again, it takes ~2 minutes to run. And again, produces the correct result
in the end.
Scenario 3:
Run regress-80981.js the following way:
"d8 regress-80981.js --noconcurrent_osr --always_osr"
I still produces the correct result, but this time takes a little under 5
minutes to complete.
While executing V8 repeatedly uses a lot of memory (like this:
http://i.imgur.com/seV73LO.png)
I ran this on a earlier x64 version, there the memory usage went even more
crazy.
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