This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/49468] SH Target: inefficient integer abs code
- From: "kkojima at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 22 Jun 2011 22:38:00 +0000
- Subject: [Bug target/49468] SH Target: inefficient integer abs code
- Auto-submitted: auto-generated
- References: <bug-49468-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49468
Kazumoto Kojima <kkojima at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
--- Comment #3 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2011-06-22 22:37:28 UTC ---
On sh4-unknown-linux-gnu, this patch causes two new failures on
libstdc++ testsuite
FAIL: 27_io/basic_ostream/inserters_arithmetic/char/7.cc execution test
FAIL: 27_io/basic_ostream/inserters_arithmetic/wchar_t/7.cc execution test
I can't find any differences between generated codes for those
test cases by compilers with/without your patch and the failures
go away if the tests are running with libstdc++ library built
with the unpatched compiler.
So it seems that something in libstdc++ library is miscompiled.
Weired and hard to see what is going on, ATM.