Am 18.09.2011 06:03, schrieb Andi Kleen:
Stefan Weil <w...@mail.berlios.de> writes:+ + switch (opc) { + case INDEX_op_end: + case INDEX_op_nop: + break;You could probably get some more speed out of this by using a threaded interpreter with gcc's computed goto extension. That's typically significantly faster than a plain switch in a loop. static void *ops[] = { &&op1, &&op2, ... }; #define NEXT() goto *ops[*tb_ptr++]; op1: ... NEXT(); -Andi
Is there really any difference in the generated code? gcc already uses a jump table internally to handle the switch cases. - Stefan
