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* [Bug c/41000] New: Optional optimization error@(m32r-elf) @ 2009-08-07 12:57 n-takeda at kwansei dot ac dot jp 2009-08-07 12:58 ` [Bug c/41000] " n-takeda at kwansei dot ac dot jp ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: n-takeda at kwansei dot ac dot jp @ 2009-08-07 12:57 UTC (permalink / raw) To: gcc-bugs [-- Warning: decoded text below may be mangled, UTF-8 assumed --] [-- Attachment #1: Type: text/plain, Size: 1698 bytes --] I use m32r-elf. When optional optimization was applied, the value is 25536. If there is no optional optimization, the value is -40000. command ------------------------------------------------------ user@user-laptop:~/study/error/m32r$ /usr/local/gcc-4.4.1_m32r-elf/bin/m32r-elf-gcc m32r.c user@user-laptop:~/study/error/m32r$ /usr/local/gcc-4.4.1_m32r-elf/bin/m32r-elf-run a.out -40000 user@user-laptop:~/study/error/m32r$ /usr/local/gcc-4.4.1_m32r-elf/bin/m32r-elf-gcc m32r.c -O2 user@user-laptop:~/study/error/m32r$ /usr/local/gcc-4.4.1_m32r-elf/bin/m32r-elf-run a.out 25536 os ------------------------------------------------------ user@user-laptop:~/study/error/m32r$ uname -a Linux user-laptop 2.6.27-14-generic #1 SMP Fri Jul 24 22:19:33 UTC 2009 i686 GNU/Linux gcc version ------------------------------------------------------ user@user-laptop:~/study/error/m32r$ /usr/local/gcc-4.4.1_m32r-elf/bin/m32r-elf-gcc -v Using built-in specs. Target: m32r-elf Configured with: ../gcc-4.4.1/configure --target=m32r-elf --prefix=/usr/local/gcc-4.4.1_m32r-elf/ --disable-nls --enable-languages=c --with-newlib --with-headers=/home/user/build/gcc-4.4.1_m32r-elf/newlib-1.17.0/newlib/libc/include/ --with-gmp=/usr/local/gmp/4.3.0/ --with-mpfr=/usr/local/mpfr/2.4.1/ Thread model: single gcc version 4.4.1 (GCC) -- Summary: Optional optimization error@(m32r-elf) Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: n-takeda at kwansei dot ac dot jp http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41000 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c/41000] Optional optimization error@(m32r-elf) 2009-08-07 12:57 [Bug c/41000] New: Optional optimization error@(m32r-elf) n-takeda at kwansei dot ac dot jp @ 2009-08-07 12:58 ` n-takeda at kwansei dot ac dot jp 2009-08-07 13:01 ` n-takeda at kwansei dot ac dot jp ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: n-takeda at kwansei dot ac dot jp @ 2009-08-07 12:58 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from n-takeda at kwansei dot ac dot jp 2009-08-07 12:58 ------- Created an attachment (id=18320) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18320&action=view) c program -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41000 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c/41000] Optional optimization error@(m32r-elf) 2009-08-07 12:57 [Bug c/41000] New: Optional optimization error@(m32r-elf) n-takeda at kwansei dot ac dot jp 2009-08-07 12:58 ` [Bug c/41000] " n-takeda at kwansei dot ac dot jp @ 2009-08-07 13:01 ` n-takeda at kwansei dot ac dot jp 2009-08-07 13:39 ` [Bug target/41000] Optional optimization error rguenth at gcc dot gnu dot org 2009-08-07 16:26 ` dj at redhat dot com 3 siblings, 0 replies; 5+ messages in thread From: n-takeda at kwansei dot ac dot jp @ 2009-08-07 13:01 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from n-takeda at kwansei dot ac dot jp 2009-08-07 13:00 ------- Created an attachment (id=18321) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18321&action=view) preprocessed file -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41000 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/41000] Optional optimization error 2009-08-07 12:57 [Bug c/41000] New: Optional optimization error@(m32r-elf) n-takeda at kwansei dot ac dot jp 2009-08-07 12:58 ` [Bug c/41000] " n-takeda at kwansei dot ac dot jp 2009-08-07 13:01 ` n-takeda at kwansei dot ac dot jp @ 2009-08-07 13:39 ` rguenth at gcc dot gnu dot org 2009-08-07 16:26 ` dj at redhat dot com 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-08-07 13:39 UTC (permalink / raw) To: gcc-bugs [-- Warning: decoded text below may be mangled, UTF-8 assumed --] [-- Attachment #1: Type: text/plain, Size: 689 bytes --] ------- Comment #3 from rguenth at gcc dot gnu dot org 2009-08-07 13:39 ------- I guess m32c implements a widening multiplication that isn't correctly implemented. Because (short)(40 * -1000) is exactly 25526. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Component|c |target GCC target triplet| |m32c-elf Summary|Optional optimization |Optional optimization error |error@(m32r-elf) | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41000 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/41000] Optional optimization error 2009-08-07 12:57 [Bug c/41000] New: Optional optimization error@(m32r-elf) n-takeda at kwansei dot ac dot jp ` (2 preceding siblings ...) 2009-08-07 13:39 ` [Bug target/41000] Optional optimization error rguenth at gcc dot gnu dot org @ 2009-08-07 16:26 ` dj at redhat dot com 3 siblings, 0 replies; 5+ messages in thread From: dj at redhat dot com @ 2009-08-07 16:26 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from dj at redhat dot com 2009-08-07 16:26 ------- m32c != m32r -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41000 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2009-08-07 16:26 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-08-07 12:57 [Bug c/41000] New: Optional optimization error@(m32r-elf) n-takeda at kwansei dot ac dot jp 2009-08-07 12:58 ` [Bug c/41000] " n-takeda at kwansei dot ac dot jp 2009-08-07 13:01 ` n-takeda at kwansei dot ac dot jp 2009-08-07 13:39 ` [Bug target/41000] Optional optimization error rguenth at gcc dot gnu dot org 2009-08-07 16:26 ` dj at redhat dot com
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