Reintroduce avx512vl_256

Author: AntoinePrv

.github/workflows/linux.yml

@@ -32,7 +32,7 @@ jobs:
           - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx512f' }
           - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx_128' }
           - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx2_128' }
-          # - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx512vl_256' }
+          - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx512vl_256' }
     steps:
     - name: Setup GCC compiler
       if: ${{ matrix.sys.compiler == 'gcc' }}

CMakePresets.json

@@ -132,6 +132,12 @@
                 "CMAKE_CXX_FLAGS": "$env{CXXFLAGS} -march=x86-64-v2 -mno-sse4a -mavx -mavx2 -mavx512f -mavx512cd -mavx512dq -mavx512bw -mno-avx512er -mno-avx512pf -mavx512ifma -mavx512vbmi -mavx512vbmi2 -mavx512vnni"
             }
         },
+        {
+            "name": "avx512vl_256",
+            "cacheVariables": {
+                "CMAKE_CXX_FLAGS": "$env{CXXFLAGS} -march=x86-64-v2 -mno-sse4a -mavx -mavx2 -mavx512f -mavx512cd -mavx512vl -mno-avx512dq -mno-avx512bw -mno-avx512er -mno-avx512pf -mno-avx512ifma -mno-avx512vbmi -mno-avx512vbmi2 -mno-avx512vnni -DXSIMD_DEFAULT_ARCH=avx512vl_256"
+            }
+        },
         {
             "name": "neon",
             "cacheVariables": {