Bug 29855 - stale liveness information duplicated
Summary: stale liveness information duplicated
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: middle-end (show other bugs)
Version: 4.3.0
: P3 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks: 29842
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Reported: 2006-11-15 21:31 UTC by Jorn Wolfgang Rennecke
Modified: 2009-02-06 21:10 UTC (History)
1 user (show)

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Description Jorn Wolfgang Rennecke 2006-11-15 21:31:36 UTC 
We duplicate useless register lifeness information for pseudo registers,
thus wasting compilation time.

For patch and discussion see here:
http://gcc.gnu.org/ml/gcc-patches/2005-12/msg00200.html
Comment 1 Steven Bosscher 2009-02-06 21:10:19 UTC 
"There is no flow..."
Fixed with df merge.