[Bug c/22198] New: Miscompile of SSE2 _mm_madd_epi16 with -O2
hurbain at cri dot ensmp dot fr
gcc-bugzilla@gcc.gnu.org
Mon Jun 27 15:02:00 GMT 2005
The attached code is OK with gcc 3.3.6 debian and gcc 4.0 without -O2 but does not generate pmaddw
instruction with gcc 4.0 and -O2.
The compile line is
/usr/local/bin/gcc -save-temps -msse2 -Wall -O2 -o bug-report bug-report.c
and the values are NOT initialized in the gcc 4.0 -O2 setup.
--
Summary: Miscompile of SSE2 _mm_madd_epi16 with -O2
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
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
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22198
More information about the Gcc-bugs
mailing list