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* optimization/10362: Optimization with constant shifts and compares fails on MIPS
@ 2003-04-09 18:46 dberger
  0 siblings, 0 replies; 3+ messages in thread
From: dberger @ 2003-04-09 18:46 UTC (permalink / raw)
  To: gcc-gnats


>Number:         10362
>Category:       optimization
>Synopsis:       Optimization with constant shifts and compares fails on MIPS
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 09 18:46:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     dberger@motorola.com
>Release:        3.2-3
>Organization:
>Environment:
Cross compiler for embedded MIPS processor
>Description:
Compiling the attached program for a MIPS with -O2 generate incorrect code for the first comparison.  It should be using 224 (14*16), but instead generates 209 (14*16 - 16 + 1).  Pretty weird.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:


^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: optimization/10362: Optimization with constant shifts and compares fails on MIPS
@ 2003-04-09 23:37 bangerth
  0 siblings, 0 replies; 3+ messages in thread
From: bangerth @ 2003-04-09 23:37 UTC (permalink / raw)
  To: dberger, gcc-bugs, gcc-prs, nobody

Synopsis: Optimization with constant shifts and compares fails on MIPS

State-Changed-From-To: feedback->closed
State-Changed-By: bangerth
State-Changed-When: Wed Apr  9 23:37:17 2003
State-Changed-Why:
    User error

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10362


^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: optimization/10362: Optimization with constant shifts and compares fails on MIPS
@ 2003-04-09 22:44 bangerth
  0 siblings, 0 replies; 3+ messages in thread
From: bangerth @ 2003-04-09 22:44 UTC (permalink / raw)
  To: dberger, gcc-bugs, gcc-prs, nobody

Synopsis: Optimization with constant shifts and compares fails on MIPS

State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Wed Apr  9 22:44:59 2003
State-Changed-Why:
    The attachment got lost. Can you please re-send it as a 
    reply to this mail?
    
    Thanks
      Wolfgang

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10362


^ permalink raw reply	[flat|nested] 3+ messages in thread
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2003-04-09 18:46 optimization/10362: Optimization with constant shifts and compares fails on MIPS dberger
2003-04-09 22:44 bangerth
2003-04-09 23:37 bangerth

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