GCC 15 removed avx10.2-512 target

PiperOrigin-RevId: 823560321

Author: jan-wassenberg

hwy/ops/set_macros-inl.h

@@ -187,12 +187,13 @@
 #define HWY_TARGET_STR_AVX3_SPR HWY_TARGET_STR_AVX3_ZEN4
 #endif
 
-#if HWY_COMPILER_GCC_ACTUAL >= 1500 || HWY_COMPILER_CLANG >= 2200
-#if HWY_HAVE_EVEX512
+// Support for avx10.2-512 was removed between clang 22 and 23 without a
+// feature test macro.
+#if HWY_COMPILER_CLANG >= 2200 && HWY_HAVE_EVEX512
 #define HWY_TARGET_STR_AVX10_2 HWY_TARGET_STR_AVX3_SPR ",avx10.2-512"
-#else
+// Recent compilers drop the -512 suffix because 512 bits are always available.
+#elif HWY_COMPILER_GCC_ACTUAL >= 1500 || HWY_COMPILER_CLANG >= 2200
 #define HWY_TARGET_STR_AVX10_2 HWY_TARGET_STR_AVX3_SPR ",avx10.2"
-#endif  // HWY_HAVE_EVEX512
 #else
 #define HWY_TARGET_STR_AVX10_2 HWY_TARGET_STR_AVX3_SPR
 #endif