The build fails on powerpc due to unconditional inclusion of x86 intrinsics header

[barracuda156]

This breaks build on powerpc: https://github.com/alielmorsy/simpleMath-toolkit/blob/b6ce24c39422d8a13d3164bc8883f168861c303d/include/math/simd/crafted_pow.h#L2

immintrin.h should not be included unconditionally. Notice, -DNO_WARN_X86_INTRINSICS will not save us here, since the current implementation of x86 intrinsics for PowerPC is a) VSX-based, so broken for ISA < 2.06 and b) AFAIK, require the CPU to be in little-endian mode.

--->  Building simpleMath-toolkit
DEBUG: Executing org.macports.build (simpleMath-toolkit)
DEBUG: Environment: 
DEBUG: CC_PRINT_OPTIONS='YES'
DEBUG: CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/.CC_PRINT_OPTIONS'
DEBUG: CPATH='/opt/local/include'
DEBUG: DEVELOPER_DIR='/Developer'
DEBUG: LIBRARY_PATH='/opt/local/lib'
DEBUG: MACOSX_DEPLOYMENT_TARGET='10.6'
DEBUG: SOURCE_DATE_EPOCH='1756059258'
Executing:  cd "/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build" && /usr/bin/make -j6 -w all VERBOSE=ON 
DEBUG: system:  cd "/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build" && /usr/bin/make -j6 -w all VERBOSE=ON 
make: Entering directory `/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build'
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cd /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build/benchmark && /opt/local/bin/g++-mp-14 -DBENCHMARK_STATIC_DEFINE -I/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build/_deps/gbenchmark-src/include -I/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include -pipe -Os -DNDEBUG -I/opt/local/include -D_GLIBCXX_USE_CXX11_ABI=0 -std=gnu++20 -arch ppc -mmacosx-version-min=10.6 -fopenmp -MD -MT benchmark/CMakeFiles/benchmark_pow.dir/pow.cpp.o -MF CMakeFiles/benchmark_pow.dir/pow.cpp.o.d -o CMakeFiles/benchmark_pow.dir/pow.cpp.o -c /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/benchmark/pow.cpp
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:29,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include/math/product.h:2,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include/SMArray.h:11,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include/sm.h:2,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/benchmark/pow.cpp:2:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/mmintrin.h:52:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   52 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:29,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include/math/product.h:2,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include/SMArray.h:11,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/include/sm.h:2,
                 from /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/simpleMath-toolkit-b6ce24c39422d8a13d3164bc8883f168861c303d/benchmark/add.cpp:2:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/mmintrin.h:52:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   52 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:31:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:54:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   54 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:79:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/mmintrin.h:52:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   52 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:31:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:54:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   54 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:79:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/mmintrin.h:52:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   52 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:33:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/emmintrin.h:56:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   56 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:33:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/emmintrin.h:56:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   56 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/emmintrin.h:66:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:54:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   54 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/emmintrin.h:66:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:54:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   54 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:35:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/pmmintrin.h:49:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
   49 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/pmmintrin.h:56:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/emmintrin.h:56:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   56 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:35:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/pmmintrin.h:49:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
   49 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/pmmintrin.h:56:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/emmintrin.h:56:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
   56 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this error."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/tmmintrin.h:44,
                 from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:37:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/pmmintrin.h:49:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
   49 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
      |  ^~~~~
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/tmmintrin.h:44,
                 from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/immintrin.h:37:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/pmmintrin.h:49:2: error: #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
   49 | #error "Please read comment above.  Use -DNO_WARN_X86_INTRINSICS to disable this warning."
      |  ^~~~~
[ 56%] Linking CXX static library libbenchmark_main.a
cd /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build/_deps/gbenchmark-build/src && /opt/local/bin/cmake -P CMakeFiles/benchmark_main.dir/cmake_clean_target.cmake
cd /opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build/_deps/gbenchmark-build/src && /opt/local/bin/cmake -E cmake_link_script CMakeFiles/benchmark_main.dir/link.txt --verbose=ON
/opt/local/bin/ar qc libbenchmark_main.a CMakeFiles/benchmark_main.dir/benchmark_main.cc.o
/opt/local/bin/ranlib libbenchmark_main.a
make[2]: Leaving directory `/opt/local/var/macports/build/simpleMath-toolkit-8cb42255/work/build'
[ 56%] Built target benchmark_main
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_loadu_ps(const float*)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:122:11: error: 'vec_vsx_ld' was not declared in this scope; did you mean 'vec_vsld'?
  122 |   return (vec_vsx_ld(0, __P));
      |           ^~~~~~~~~~
      |           vec_vsld
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_sqrt_ss(__m128)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:342:18: error: '__builtin_vsx_xvsqrtsp' requires the '-mvsx' option
  342 |   __c = vec_sqrt (__a);
      |                  ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:342:18: note: overloaded builtin '__builtin_vec_sqrt' is implemented by builtin '__builtin_vsx_xvsqrtsp'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_sqrt_ps(__m128)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:376:20: error: '__builtin_vsx_xvsqrtsp' requires the '-mvsx' option
  376 |   return (vec_sqrt ((__v4sf)__A));
      |                    ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:376:20: note: overloaded builtin '__builtin_vec_sqrt' is implemented by builtin '__builtin_vsx_xvsqrtsp'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m64 _mm_cvtps_pi32(__m128)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:996:31: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
  996 |   __vector unsigned long long __result;
      |                               ^~~~~~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:999:47: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
  999 |   __temp = (__v4sf) vec_splat ((__vector long long)__A, 0);
      |                                               ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:999:31: error: '__builtin_vsx_xxspltd_2di' requires the '-mvsx' option
  999 |   __temp = (__v4sf) vec_splat ((__vector long long)__A, 0);
      |                               ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:999:31: note: overloaded builtin '__builtin_vec_splat' is implemented by builtin '__builtin_vsx_xxspltd_2di'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1000:24: error: '__builtin_vsx_xvrspic' requires the '-mvsx' option
 1000 |   __rounded = vec_rint (__temp);
      |                        ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1000:24: note: overloaded builtin '__builtin_vec_rint' is implemented by builtin '__builtin_vsx_xvrspic'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1001:38: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1001 |   __result = (__vector unsigned long long) vec_cts (__rounded, 0);
      |                                      ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1003:34: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1003 |   return (__m64) ((__vector long long) __result)[0];
      |                                  ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m64 _mm_cvttps_pi32(__m128)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1054:31: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1054 |   __vector unsigned long long __result;
      |                               ^~~~~~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1057:47: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1057 |   __temp = (__v4sf) vec_splat ((__vector long long)__A, 0);
      |                                               ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1057:31: error: '__builtin_vsx_xxspltd_2di' requires the '-mvsx' option
 1057 |   __temp = (__v4sf) vec_splat ((__vector long long)__A, 0);
      |                               ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1057:31: note: overloaded builtin '__builtin_vec_splat' is implemented by builtin '__builtin_vsx_xxspltd_2di'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1058:38: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1058 |   __result = (__vector unsigned long long) vec_cts (__temp, 0);
      |                                      ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1060:34: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1060 |   return (__m64) ((__vector long long) __result)[0];
      |                                  ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_cvtpi32_ps(__m128, __m64)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1111:57: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1111 |   __vm1 = (__vector signed int) (__vector unsigned long long) {__B, __B};
      |                                                         ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1114:44: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1114 |   return ((__m128) (__vector unsigned long long)
      |                                            ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1115:32: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1115 |     { ((__vector unsigned long long)__vf1) [0],
      |                                ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1116:34: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1116 |         ((__vector unsigned long long)__A) [1]});
      |                                  ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_cvtpi16_ps(__m64)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1133:59: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1133 |   __vs8 = (__vector signed short) (__vector unsigned long long) { __A, __A };
      |                                                           ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_cvtpu16_ps(__m64)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1150:61: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1150 |   __vs8 = (__vector unsigned short) (__vector unsigned long long) { __A, __A };
      |                                                             ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_cvtpi8_ps(__m64)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1171:59: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1171 |   __vc16 = (__vector signed char) (__vector unsigned long long) { __A, __A };
      |                                                           ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_cvtpu8_ps(__m64)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1191:61: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1191 |   __vc16 = (__vector unsigned char) (__vector unsigned long long) { __A, __A };
      |                                                             ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m128 _mm_cvtpi32x2_ps(__m64, __m64)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1213:57: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1213 |   __vi4 = (__vector signed int) (__vector unsigned long long) { __A, __B };
      |                                                         ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m64 _mm_cvtps_pi16(__m128)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1224:31: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1224 |   __vector unsigned long long __result;
      |                               ^~~~~~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1226:23: error: '__builtin_vsx_xvrspic' requires the '-mvsx' option
 1226 |   __rounded = vec_rint(__A);
      |                       ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1226:23: note: overloaded builtin '__builtin_vec_rint' is implemented by builtin '__builtin_vsx_xvrspic'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1228:38: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1228 |   __result = (__vector unsigned long long) vec_pack (__temp, __temp);
      |                                      ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1230:34: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1230 |   return (__m64) ((__vector long long) __result)[0];
      |                                  ^~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h: In function '__m64 _mm_cvtps_pi8(__m128)':
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1243:23: error: '__builtin_vsx_xvrspic' requires the '-mvsx' option
 1243 |   __rounded = vec_rint(__A);
      |                       ^
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1243:23: note: overloaded builtin '__builtin_vec_rint' is implemented by builtin '__builtin_vsx_xvrspic'
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.2.0/include/xmmintrin.h:1247:34: error: use of 'long long' in AltiVec types is invalid without '-mvsx'
 1247 |   return (__m64) ((__vector long long) __res_v)[0];
      |                                  ^~~~
. . .

[alielmorsy]

Thank you @barracuda156 for pointing that out. In fact I never worked with PowerPC before. I did some research and found out that it requires some special handling not like normal SSE. I will add it to my own backlog for sure and you are welcome to implement it yourself.

Also, Just to know I am working on building the pow simd function for floats as GNU does not support natively

[barracuda156]

@alielmorsy Thank you! I was thinking that outside of x86/arm a non-vectorized implementation is used, from https://github.com/alielmorsy/simpleMath-toolkit/blob/b6ce24c39422d8a13d3164bc8883f168861c303d/CMakeLists.txt#L29

PowerPC has its own SIMD, but what specifically is supported depends on ISA version of a given CPU. Likely there are two relevant “levels”: basic Altivec and VSX. Intel SIMD are supported only via VSX, and, I think, only in LE mode. It will be great to have a dedicated Altivec code, of course, but a scalar fallback will be still nice.

P. S. This pulling in of VSX-requiring code via intrinsics headers is a known problem, and it was fixed in Boost, for example: boostorg/multiprecision#525

[alielmorsy]

@barracuda156 Yes exactly! The algorithm have the ability to run scalars for sure. CMake was created for X86 and ARM neon. (I didn't even implement this part yet) But it will be definitely better to support AltiVec support. But for now let's work for scalars as it will be easier. I will definitely handle it with qmeu-ppc. You are also welcomed to start a discussion and implement some definition checks for powerpc if you have time OFC.

Currently, I am fucked up with pow(float,float) which forced me to impl exp(x) and log(x)

[barracuda156]

You are also welcomed to start a discussion and implement some definition checks for powerpc if you have time OFC.

Do you prefer these as macros inside sources or in CMakeLists?

[alielmorsy]

I have a file called macros.h. You can add these macros there for the vectorization itself. I am thinking of adjusting SSE SIMD based on the architecture. That is, if it’s x86, SIMD is used as is; otherwise, load128, store128, etc., are adjusted according to the architecture (I am assuming here that AltVec using the same size as 128 btw

[barracuda156]

@alielmorsy Not sure if AltiVec has something exclusive to it in this regard, but long double on PowerPC typically differs, it is not IEEE-compliant (see “IBM long double”).

[alielmorsy]

@barracuda156 After some thinking and searching I guess supporting vectorization on powerPC will be nearly impossible for now. My pointers are not aligned I will add a flag in CMake later on. VMX works only with aligned memory. So, my suggestion would be disabling vectorization for powerPC. I would love to add a macro via cmake for that. How can we disable vectorization?

• https://github.com/alielmorsy/simpleMath/blob/d4d0b6fd84069e0783a36d2b229ee0ebc050fc9a/include/math/calculate.h#L45C16-L45C29 here we need to force canVectorize to be false (make it constexpr so it optimizes the check at compile time)
• If the toolchain supports PRAGMA_UNROLL implement it
• handle_contiguous_arrays and array_scalar_op need to be refactored to force simd_end to be always zero if vectorization is disabled

I am pretty sure that will be a great start