Bug 1415291

Summary: gcc compile time increases dramatically
Product: Red Hat Enterprise Linux 7 Reporter: Paulo Andrade <pandrade>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED CURRENTRELEASE QA Contact: qe-baseos-tools-bugs
Severity: medium Docs Contact:
Priority: unspecified    
Version: 7.2CC: cww, dkochuka, jakub, mpolacek
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2017-06-22 18:34:38 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 1420851    
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gcc48-sfdc01776144.patch none

Description Paulo Andrade 2017-01-20 19:14:56 UTC 
Created attachment 1242970 [details]
gcc48-sfdc01776144.patch

While switching from rhel 6.7 to rhel 7.2, user noticed a very
high increase in compile time (from 32 seconds to 26 minutes).
 
  User tested attached patch, that is missing in rhel 7.2 gcc,
as fix to upstream PR middle-end/60291.

  The patch was rediffed from
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=208113
because the fuzz in the change:
248: static bool
249: mem_attrs_eq_p (const struct mem_attrs *p, const struct mem_attrs *q)

to

248: bool
249: mem_attrs_eq_p (const struct mem_attrs *p, const struct mem_attrs *q)

  User reports a gcc build with this patch corrects the problem.