[ruby-cvs:54916] normal:r47767 (trunk): st.c (new_size): use next_pow2 function

[normal at ruby-lang.org]

normal	2014-10-03 06:17:13 +0900 (Fri, 03 Oct 2014)

  New Revision: 47767

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=47767

  Log:
    st.c (new_size): use next_pow2 function
    
    Reduces object size slightly on x86-64:
    
       text	   data	    bss	    dec	    hex	filename
    2782359	  22400	  71880	2876639	 2be4df	ruby.orig
    2781831	  22400	  71880	2876111	 2be2cf	ruby.pow2
    
    And on 32-bit x86:
    
       text	   data	    bss	    dec	    hex	filename
    2814751	  12100	  30552	2857403	 2b99bb	ruby.orig
    2814051	  12100	  30552	2856703	 2b96ff	ruby.pow2
    
    This is not a performance-critical function, but the
    smaller icache footprint seems worth it.

  Modified files:
    trunk/ChangeLog
    trunk/st.c