search for: mvsx

...one, I'm having trouble figuring out a compile failure on ppc64le. The failure is at https://travis-ci.org/noloader/cryptopp-autotools/jobs/602187190 . The message is: /bin/bash ./libtool --tag=CXX --mode=compile clang++ -DHAVE_CONFIG_H -I. -DCRYPTOPP_DISABLE_POWER8 -pipe -mcpu=power7 -mvsx -maltivec -g -O2 -MT libppc_power7_la-ppc_power7.lo -MD -MP -MF .deps/libppc_power7_la-ppc_power7.Tpo -c -o libppc_power7_la-ppc_power7.lo `test -f 'ppc_power7.cpp' || echo './'`ppc_power7.cpp ppc_power7.cpp:71:21: error: use of undeclared identifier 'vec_xl' ve...

...SD/powerpc, neither is available, nor any equivalent. I have attached a patch by Jeremie Courreges-Anglas which adds proper autoconf checks to detect <sys/auxv.h> and getauxval(). This could be extended to cover elf_aux_info(). For FreeBSD/powerpc64, I have been told the compiler requires -mvsx to enable the intrinsics used by libFLAC/lpc_intrin_vsx.c. Apparently, there is no sufficient autoconf check, so compilation will fail unless -mvsx has been manually added. It is, however, unclear whether compiling with explicit -mvsx will cause the compiler to emit code that does not run on earl...

...onstruct a list of programs in the test suite that are not useful for benchmarking. My proposed exclusion list is provided below. I constructed this exclusion list primarily based on the following experiment: I ran the test suite 10 times in three configurations: 1) On an IBM POWER7 (P7) with -O3 -mvsx, 2) On a P7 at -O0 and 3) On an Intel Xeon E5430 with -O3 all using make -j6. I then used the ministat utility (which performs a T test) to compare the timings of the two P7 configurations against each other and the Xeon configuration, requiring a detectable difference at 99.5% confidence. I looked...