https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
Daniel Santos changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
--- Comment #9 from Daniel Santos daniel.santos at pobox dot com ---
I appologize for my late response.
(In reply to Richard Earnshaw from comment #8)
Unfortunately, computers don't to infinite precision arithmetic by default.
That would
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
--- Comment #8 from Richard Earnshaw rearnsha at gcc dot gnu.org ---
(In reply to Daniel Santos from comment #7)
First off, I apologize for my late response here.
(In reply to comment #5)
I'm going to respond a little backwards..
In fact,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
--- Comment #7 from Daniel Santos daniel.santos at pobox dot com 2012-11-15
21:56:02 UTC ---
First off, I apologize for my late response here.
(In reply to comment #5)
I'm going to respond a little backwards..
In fact, on ARM there
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
--- Comment #5 from Richard Earnshaw rearnsha at gcc dot gnu.org 2012-10-13
16:04:55 UTC ---
The result of the comparison is used in more than one instruction, so combine
cannot safely rework the branch instructions that follow to ensure
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
--- Comment #6 from Richard Earnshaw rearnsha at gcc dot gnu.org 2012-10-13
16:18:03 UTC ---
Note also that flag setting behaviour of the PPC instruction essentially is a
comparison of the result against zero. On ARM the flags are set as
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
Daniel Santos daniel.santos at pobox dot com changed:
What|Removed |Added
Summary|bad optimization: sub |bad
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
--- Comment #4 from Daniel Santos daniel.santos at pobox dot com 2012-10-06
15:57:15 UTC ---
Please help me out here if I am missing something.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54829
Andrew Pinski pinskia at gcc dot gnu.org changed:
What|Removed |Added
Keywords|
