[PATCH] Significantly reduce memory usage of genattrtab
Bernd Edlinger
bernd.edlinger@hotmail.de
Tue Nov 15 10:56:00 GMT 2016
Hi!
The genattrtab build-tool uses way too much memory in general.
I think there is no other build step that uses more memory.
On the currently trunk it takes around 700MB to build the
ARM latency tab files. I debugged that yesterday
and found that this can be reduced to 8MB (!). Yes, really.
So the attached patch does try really hard to hash and re-use
all ever created rtx objects.
Bootstrapped and reg-tested on x86_64-pc-linux-gnu and ARM.
Is it OK for trunk?
Thanks
Bernd.
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