-# prefetch = yes/no --- -DUSE_PREFETCH --- Use prefetch x86 asm-instruction
-# bsfq = yes/no --- -DUSE_BSFQ --- Use bsfq x86_64 asm-instruction (only
-# with GCC and ICC 64-bit)
-# popcnt = yes/no --- -DUSE_POPCNT --- Use popcnt x86_64 asm-instruction
+# prefetch = yes/no --- -DUSE_PREFETCH --- Use prefetch asm-instruction
+# popcnt = yes/no --- -DUSE_POPCNT --- Use popcnt asm-instruction