I have 4.3.0 SVN 20070523 and just updated it a minute ago to "revision 125011".
I ran "make -i check" and noticed a number of UNSUPPORTED in the "C" tests. # grep -B 5 -A 0 15233 gcc/testsuite/gcc/gcc.log PASS: gcc.target/i386/sse3-movshdup.c execution test Executing on host: /opt/gcc-4_3-build/gcc/xgcc -B/opt/gcc-4_3-build/gcc/ /root/downloads/gcc-4_3-trunk/gcc/testsuite/gcc.target/i386/sse3-movsldup.c -O2 -msse3 -fno-show-column -lm -o ./sse3-movsldup.exe (timeout = 300) PASS: gcc.target/i386/sse3-movsldup.c (test for excess errors) Setting LD_LIBRARY_PATH to :/opt/gcc-4_3-build/gcc::/opt/gcc-4_3-build/gcc:/opt/gcc-4_3-build/i686-pc-linux-gnu/libstdc++-v3/.libs:/opt/gcc-4_3-build/i686-pc-linux-gnu/libmudflap/.libs:/opt/gcc-4_3-build/i686-pc-linux-gnu/libssp/.libs:/opt/gcc-4_3-build/i686-pc-linux-gnu/libgomp/.libs:/opt/gcc-4_3-build/./gcc:/opt/gcc-4_3-build/./prev-gcc PASS: gcc.target/i386/sse3-movsldup.c execution test Executing on host: /opt/gcc-4_3-build/gcc/xgcc -B/opt/gcc-4_3-build/gcc/ -O2 -msse4.1 -fno-show-column -c -o sse4.15233.o sse4.15233.c (timeout = 300) Notice that the test of "sse3-movsldup.c" uses the path "gcc.target/i386/" . Notice that the test of "sse4.15233.c" uses the path "" . In addition, the file "sse4.15233.c" did not exist the other day when I got the SVN _AND_ it still does not exist now when I re-got the SVN a few minutes ago. I checked my HD to see if it was generated, it does not exist. When the compilation of "sse4.15233.c" fails it causes a number of tests that follow to be ASSUMED (or at least reported) as unsupported. Here are a few: UNSUPPORTED: gcc.target/i386/sse4_1-blendpd.c UNSUPPORTED: gcc.target/i386/sse4_1-blendps.c UNSUPPORTED: gcc.target/i386/sse4_1-blendvpd.c _MY_ test method: # ls -l sse4_1* ls: sse4_1*: No such file or directory # /opt/gcc-4_3-build/gcc/xgcc -B/opt/gcc-4_3-build/gcc/ -O2 -msse4.1 -fno-show-column -c -o sse4_1-blendpd.o /root/downloads/gcc-4_3-trunk/gcc/testsuite/gcc.target/i386/sse4_1-blendpd.c # /opt/gcc-4_3-build/gcc/xgcc -B/opt/gcc-4_3-build/gcc/ -O2 -msse4.1 -fno-show-column -c -o sse4_1-blendps.o /root/downloads/gcc-4_3-trunk/gcc/testsuite/gcc.target/i386/sse4_1-blendps.c # /opt/gcc-4_3-build/gcc/xgcc -B/opt/gcc-4_3-build/gcc/ -O2 -msse4.1 -fno-show-column -c -o sse4_1-blendvpd.o /root/downloads/gcc-4_3-trunk/gcc/testsuite/gcc.target/i386/sse4_1-blendvpd.c : Assembler messages: :187: Error: no such instruction: `blendvpd %xmm0,-1000(%ebx,%ebp),%xmm1' # ls -l sse4_1* -rw-r--r-- 1 root root 1648 May 23 17:38 sse4_1-blendpd.o -rw-r--r-- 1 root root 1664 May 23 17:39 sse4_1-blendps.o So the more correct message would be: PASS: gcc.target/i386/sse4_1-blendpd.c PASS: gcc.target/i386/sse4_1-blendps.c UNSUPPORTED: gcc.target/i386/sse4_1-blendvpd.c The testsuite thinks that the failure of a non-existant file means the rest of the tests won't pass. I'm not an "SSE" expert but with so many processors types and variables you _might_ need to test for processor capability with a _COORECT_ program. Then use a huge chart that says exactly what is supported by the manufacturer - unless you actually wish to test unsupported but working instructions. Many "cpuid" programs are not bleading edge and you don't want to keep updating. Keeping a chart is a pain. Using "cat /proc/cpuinfo" is not reliable. cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 43 ... fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up pni lahf_lm cmp_legacy ts fid vid ttp I bet you think I have an Opteron, many programs do. There were so many problems with the "gcc" tests that I'll need to poke around and type "make -i check-gcc" to re-check gcc only. The other tests are not as bad. It is important that "C" work as it affects all the other compilers - and thus the results. We need ZERO errors in "C" (and Ada since it is a "first-stager"). -- Summary: gcc revision 20070523 - Non-existant sse4 test (with wrong path) causes "UNSUPPORTED" for working tests Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: testsuite AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: rob1weld at aol dot com GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32062