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* [Bug rtl-optimization/57810] New: Waste work in validate_const_int()
@ 2013-07-03 19:00 pchang9 at cs dot wisc.edu
  2013-07-03 20:26 ` [Bug rtl-optimization/57810] Wasted " pchang9 at cs dot wisc.edu
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: pchang9 at cs dot wisc.edu @ 2013-07-03 19:00 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57810

            Bug ID: 57810
           Summary: Waste work in validate_const_int()
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pchang9 at cs dot wisc.edu
                CC: nistor1 at illinois dot edu

The problem appears in revision 200588 in version 4.9.

In method "validate_const_int()" in gcc/read-rtl.c, the loop on line 804 should
break immediately after "valid" is set to "0". All the iterations after "valid"
set to "0" do not perform any useful work, at best they just set "valid" again
to "0".


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug rtl-optimization/57810] Wasted work in validate_const_int()
  2013-07-03 19:00 [Bug rtl-optimization/57810] New: Waste work in validate_const_int() pchang9 at cs dot wisc.edu
@ 2013-07-03 20:26 ` pchang9 at cs dot wisc.edu
  2013-07-17 16:48 ` pchang9 at cs dot wisc.edu
  2013-07-18 16:11 ` law at redhat dot com
  2 siblings, 0 replies; 4+ messages in thread
From: pchang9 at cs dot wisc.edu @ 2013-07-03 20:26 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57810

--- Comment #1 from Po-Chun Chang <pchang9 at cs dot wisc.edu> ---
Created attachment 30440
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30440&action=edit
Suggested patch


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug rtl-optimization/57810] Wasted work in validate_const_int()
  2013-07-03 19:00 [Bug rtl-optimization/57810] New: Waste work in validate_const_int() pchang9 at cs dot wisc.edu
  2013-07-03 20:26 ` [Bug rtl-optimization/57810] Wasted " pchang9 at cs dot wisc.edu
@ 2013-07-17 16:48 ` pchang9 at cs dot wisc.edu
  2013-07-18 16:11 ` law at redhat dot com
  2 siblings, 0 replies; 4+ messages in thread
From: pchang9 at cs dot wisc.edu @ 2013-07-17 16:48 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57810

--- Comment #2 from Po-Chun Chang <pchang9 at cs dot wisc.edu> ---
Patch sent to gcc-patches@:

http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00662.html


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug rtl-optimization/57810] Wasted work in validate_const_int()
  2013-07-03 19:00 [Bug rtl-optimization/57810] New: Waste work in validate_const_int() pchang9 at cs dot wisc.edu
  2013-07-03 20:26 ` [Bug rtl-optimization/57810] Wasted " pchang9 at cs dot wisc.edu
  2013-07-17 16:48 ` pchang9 at cs dot wisc.edu
@ 2013-07-18 16:11 ` law at redhat dot com
  2 siblings, 0 replies; 4+ messages in thread
From: law at redhat dot com @ 2013-07-18 16:11 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57810

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |law at redhat dot com
         Resolution|---                         |FIXED

--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on trunk.


^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-07-18 16:11 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2013-07-03 19:00 [Bug rtl-optimization/57810] New: Waste work in validate_const_int() pchang9 at cs dot wisc.edu
2013-07-03 20:26 ` [Bug rtl-optimization/57810] Wasted " pchang9 at cs dot wisc.edu
2013-07-17 16:48 ` pchang9 at cs dot wisc.edu
2013-07-18 16:11 ` law at redhat dot com

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