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[Bug c/69609] New: block reordering consumes an inordinate amount of time
- From: "dcb314 at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 01 Feb 2016 21:51:03 +0000
- Subject: [Bug c/69609] New: block reordering consumes an inordinate amount of time
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69609
Bug ID: 69609
Summary: block reordering consumes an inordinate amount of time
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 37545
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37545&action=edit
gzipped C source code
The attached code, when compiled by trunk gcc 6.0.0,
with flag -O2, seems to take about 17 minutes.
gcc 5.3.1 seems to take about 16 minutes for the same code.
In a private email, Jeffery Law says:
>I do note that test is spending most of its time (90%) in block
>reordering, so you might want to go ahead and file it
- Follow-Ups:
- [Bug rtl-optimization/69609] [6 Regression] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] [6 Regression] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: bernds at gcc dot gnu.org
- [Bug rtl-optimization/69609] [6 Regression] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: bernds at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: law at redhat dot com
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: dcb314 at hotmail dot com
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: law at redhat dot com
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org
- [Bug rtl-optimization/69609] block reordering consumes an inordinate amount of time, REE consumes much memory
- From: rguenth at gcc dot gnu.org