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[Bug bootstrap/77510] New: genautomata memory footprint for MIPS
- From: "lly.dev at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 07 Sep 2016 09:09:57 +0000
- Subject: [Bug bootstrap/77510] New: genautomata memory footprint for MIPS
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77510
Bug ID: 77510
Summary: genautomata memory footprint for MIPS
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: lly.dev at gmail dot com
Target Milestone: ---
Created attachment 39578
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39578&action=edit
genautomata output MIPS32
Hello,
bootstrapping/crosscompiling gcc 5.4.0 for MIPS, genautomata uses a lot of
memory. This causes swapping/thrashing and extremely long build times on low
memory systems. According to valgrind massif report, it requires 527MB of heap
now.
genautomata output(-time -progress -stats) attached to PR. Probably we need to
try to decrease reservations for `xlp_cpu', `xlp_fpu' since simple
disable(comment out it in mips.md) of xlp support decreases heap usage down to
43MB.
Similar to bug 70473, which requests that a new bug is filed.
Thank you for your attention!