[Bug regression/26128] New: Regression vs 4.1.0cvs20051015 - Trivial operation not vectorized

Priority: P3 Component: regression AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hurbain at cri dot ensmp dot fr http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26128

[Bug c/22198] New: Miscompile of SSE2 _mm_madd_epi16 with -O2

at cri dot ensmp dot fr CC: gcc-bugs at gcc dot gnu dot org GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22198

[Bug target/22198] Miscompile of SSE2 _mm_madd_epi16 with -O2

--- Additional Comments From hurbain at cri dot ensmp dot fr 2005-06-27 15:03 --- Created an attachment (id=9160) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9160action=view) Testcase -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22198

[Bug target/22198] Miscompile of SSE2 _mm_madd_epi16 with -O2

--- Additional Comments From hurbain at cri dot ensmp dot fr 2005-06-27 15:14 --- Well, ld do segfault now... To be honest I don't know about C aliasing rules ;-( -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22198

[Bug target/22198] Miscompile of SSE2 _mm_madd_epi16 with -O2

--- Additional Comments From hurbain at cri dot ensmp dot fr 2005-06-27 15:45 --- Sorry, no segfault of ld. My mistake - wrong compilation options. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22198

[Bug tree-optimization/21234] ICE with -ftree-vectorize in convert_move at expr.c:367

--- Additional Comments From hurbain at cri dot ensmp dot fr 2005-05-13 13:55 --- I encountered this bug too with a very similar code on GCC 4.1 snapshot 20050424 with options -O2 -msse2 -ftree-vectorize. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21234

[Bug c/21212] New: missed vectorization opportunity

Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hurbain at cri dot ensmp dot fr CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21212