change `cfunc->invoker` type for opt.

* vm_insnhelper.c: change `call_cfunc_*` parameters order
  and specify a function type for the passed func ptr.
  This fix reduce the number of asm instructions, such as:
    # before this patch
    0000000000000110 <call_cfunc_0>:
     110:       48 89 fa                mov    %rdi,%rdx
     113:       31 c0                   xor    %eax,%eax
     115:       48 89 f7                mov    %rsi,%rdi
     118:       ff e2                   jmpq   *%rdx
     11a:       66 0f 1f 44 00 00       nopw   0x0(%rax,%rax,1)

    # after this patch
    0000000000000110 <call_cfunc_0>:
     110:       ff e1                   jmpq   *%rcx

  However, this kind of instruction reduction doesn't affect
  any performance because of great CPU architectures :p


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67122 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/vm_eval.c b/vm_eval.c
index de1d73b81e..ad29c77551 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -83,7 +83,7 @@ vm_call0_cfunc_with_frame(rb_execution_context_t* ec, struct rb_calling_info *ca
 
 	if (len >= 0) rb_check_arity(argc, len, len);
 
-	val = (*cfunc->invoker)(cfunc->func, recv, argc, argv);
+	val = (*cfunc->invoker)(recv, argc, argv, cfunc->func);
 
 	CHECK_CFP_CONSISTENCY("vm_call0_cfunc_with_frame");
 	rb_vm_pop_frame(ec);