The x86 case differs from the msp430 case in that the x86 case makes
the count a *smaller* mode (SI->QI) where the msp430 case makes it
*bigger* (HI->SI). msp430 uses the "Handle expanding beyond a word"
case in convert_move() (msp430's word is HImode), ending in the
multiword-by-hand case.
On Wed, Apr 16, 2014 at 10:22:52PM -0400, DJ Delorie wrote:
> > + {
> > + other_amount
> > + = simplify_gen_unary (NEG, GET_MODE (op1),
> > + op1, GET_MODE (op1));
> > + other_amount
> > + = simplify_g
Doing some work on the msp430 failures, I discovered that this patch:
> --- gcc/expmed.c.jj 2013-05-07 10:26:46.0 +0200
> +++ gcc/expmed.c 2013-05-11 09:11:54.087412982 +0200
> @@ -2181,14 +2182,22 @@ expand_shift_1 (enum tree_code code, enu
> rtx temp1;
>
>
On Sat, 11 May 2013, Jakub Jelinek wrote:
> On Sat, May 11, 2013 at 09:05:52AM +0200, Jakub Jelinek wrote:
> > > Seems that we ought to have a testcase, even though it probably
> > > means scanning the tree dumps to pick up the undefined behaviour.
> > > Approved with a testcase.
> >
> > I have a
