[Bug target/51244] SH Target: Inefficient conditional branch

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51244

Oleg Endo <olegendo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #26191|0                           |1
        is obsolete|                            |

--- Comment #9 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-03-02 21:56:38 UTC ---
Created attachment 26812
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26812
Proposed patch

I've tested this patch again against rev 184764 (GCC 4.7) with

make -k check RUNTESTFLAGS="--target_board=sh-sim\{
-m2/-ml,-m2/-mb,-m2a-single/-mb,-m4-single/-ml,
-m4-single/-mb,-m4a-single/-ml,-m4a-single/-mb}"

Surprisingly, it fixes the following libstdc++ tests.

For all sub targets:
23_containers/forward_list/requirements/exception/basic.cc
23_containers/forward_list/requirements/exception/propagation_consistent.cc
23_containers/list/requirements/exception/basic.cc
23_containers/list/requirements/exception/propagation_consistent.cc
23_containers/multiset/requirements/exception/basic.cc
23_containers/multiset/requirements/exception/propagation_consistent.cc
23_containers/unordered_map/requirements/exception/propagation_consistent.cc
23_containers/unordered_multimap/requirements/exception/basic.cc
23_containers/unordered_multiset/requirements/exception/basic.cc
23_containers/unordered_multiset/requirements/exception/propagation_consistent.cc
23_containers/unordered_set/requirements/exception/propagation_consistent.cc
ext/pb_ds/regression/list_update_map_rand.cc
ext/pb_ds/regression/list_update_set_rand.cc

For -m4a-single and -m4-single (-ml and -mb):
23_containers/forward_list/requirements/exception/basic.cc
23_containers/forward_list/requirements/exception/propagation_consistent.cc
23_containers/list/requirements/exception/basic.cc
23_containers/list/requirements/exception/propagation_consistent.cc
23_containers/multiset/requirements/exception/basic.cc
23_containers/multiset/requirements/exception/propagation_consistent.cc

However, it also introduces two new of new failures.

For all sub targets:
FAIL: 21_strings/basic_string/cons/char/6.cc execution test

For -m4a-single and -m4-single (-ml and -mb):
FAIL: 22_locale/ctype/is/char/3.cc execution test

I'm looking into what is happening in the two cases.