On Mar 1, 2014, at 12:16 PM, Lucas Tanure wrote:

> http://www.t4f.org/articles/optimization-of-microchip-pic-xc8-compiler-in=
-free-and-pro-mode/

Is this using the most recent version of xc8?  I've heard (and seen some be=
nchmarks) indicating that the "optimization level" has been improved recent=
ly.

For instance, I just tried the sample one-liner, and got:
   103                           ;main.c: 46: maxDev =3D CCPR1L >> 4;
   104  000118  38BC               	swapf	4028,w,c	;volatile
   105  00011A  0B0F               	andlw	15
   106  00011C  6E20               	movwf	_maxDev,c

------

The issue of offering a free C compiler with especially poor optimization i=
s that the proponents of HLL programming have been claiming for years now t=
hat the state of compiler technology is good enough that compilers usually =
produce code almost as good as an assembly language programmer could produc=
e.  (Better, averaged over large programs.)  For a major chip vendor to sup=
ply a compiler where this is not even close to true reinforces old-style th=
inking. :-(

BillW


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