+#elif defined(USE_X86_64_ASM)
+ {
+ unsigned int eax, ebx, ecx, edx;
+
+ /* Always available on x86-64. */
+ _mesa_x86_cpu_features |= X86_FEATURE_XMM | X86_FEATURE_XMM2;
+
+ if (!__get_cpuid(1, &eax, &ebx, &ecx, &edx))
+ return;
+
+ if (ecx & bit_SSE4_1)
+ _mesa_x86_cpu_features |= X86_FEATURE_SSE4_1;
+ }
+#endif /* USE_X86_64_ASM */
+
+ (void) detection_debug;
+}