public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
@ 2014-09-11 7:47 ` vogt at linux dot vnet.ibm.com
2014-09-11 7:48 ` vogt at linux dot vnet.ibm.com
` (4 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: vogt at linux dot vnet.ibm.com @ 2014-09-11 7:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63172
--- Comment #1 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Created attachment 33468
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33468&action=edit
Test prog for Go
Run and watch for differences in the output lines. They should be identical.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
2014-09-11 7:47 ` [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le vogt at linux dot vnet.ibm.com
@ 2014-09-11 7:48 ` vogt at linux dot vnet.ibm.com
2014-09-11 7:49 ` vogt at linux dot vnet.ibm.com
` (3 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: vogt at linux dot vnet.ibm.com @ 2014-09-11 7:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63172
--- Comment #2 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Created attachment 33469
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33469&action=edit
Test prog for C
Run with "./mycplx2_c 5 6".
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
2014-09-11 7:47 ` [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le vogt at linux dot vnet.ibm.com
2014-09-11 7:48 ` vogt at linux dot vnet.ibm.com
@ 2014-09-11 7:49 ` vogt at linux dot vnet.ibm.com
2014-09-12 9:34 ` vogt at linux dot vnet.ibm.com
` (2 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: vogt at linux dot vnet.ibm.com @ 2014-09-11 7:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63172
--- Comment #3 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
So the problem is that for some targets gcc's constant folding may yield a
different result for floating point calculations than the result if the
calculations were done on the target. The attached test programs show this for
Go and C on s390, and maybe other platforms.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2014-09-11 7:49 ` vogt at linux dot vnet.ibm.com
@ 2014-09-12 9:34 ` vogt at linux dot vnet.ibm.com
2014-10-02 14:52 ` boger at us dot ibm.com
2014-10-02 15:11 ` boger at us dot ibm.com
5 siblings, 0 replies; 6+ messages in thread
From: vogt at linux dot vnet.ibm.com @ 2014-09-12 9:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63172
--- Comment #4 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
On s390x, the option -fcx-limited-range "fixes" the deviation in the C test
program (tried with -O0 and -O3), but it has no effect for the Go test program.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2014-09-12 9:34 ` vogt at linux dot vnet.ibm.com
@ 2014-10-02 14:52 ` boger at us dot ibm.com
2014-10-02 15:11 ` boger at us dot ibm.com
5 siblings, 0 replies; 6+ messages in thread
From: boger at us dot ibm.com @ 2014-10-02 14:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63172
boger at us dot ibm.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #5 from boger at us dot ibm.com ---
This is the same problem as described in 60181.
*** This bug has been marked as a duplicate of bug 60181 ***
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2014-10-02 14:52 ` boger at us dot ibm.com
@ 2014-10-02 15:11 ` boger at us dot ibm.com
5 siblings, 0 replies; 6+ messages in thread
From: boger at us dot ibm.com @ 2014-10-02 15:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63172
boger at us dot ibm.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
--- Comment #6 from boger at us dot ibm.com ---
Comments for this bug will appear in 60181.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-10-02 15:11 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <bug-63172-4@http.gcc.gnu.org/bugzilla/>
2014-09-11 7:47 ` [Bug go/63172] gccgo testcase cplx2.go execution provides incorrect answers on trunk for powerpc64, powerpc64le vogt at linux dot vnet.ibm.com
2014-09-11 7:48 ` vogt at linux dot vnet.ibm.com
2014-09-11 7:49 ` vogt at linux dot vnet.ibm.com
2014-09-12 9:34 ` vogt at linux dot vnet.ibm.com
2014-10-02 14:52 ` boger at us dot ibm.com
2014-10-02 15:11 ` boger at us dot ibm.com
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).