On Thu, Jul 21, 2011 at 9:39 AM, Jakub Jelinek <ja...@redhat.com> wrote:
> Hi!
>
> The 4.4 expr.c is significantly different from 4.5 that the PR48973
> backport wasn't trivial, and apparently I've missed another place
> - on the 4.4 branch the new pr48973-{1,2}.c tests fail on s390{,x}-linux.
>
> The following patch fixes it, ok for 4.4 branch?Ok. THanks, Richard. > 2011-07-21 Jakub Jelinek <ja...@redhat.com> > > PR middle-end/48973 > * expr.c (expand_expr_real_1) <case TRUTH_ANDIF_EXPR:>: If > the comparison has a single bit signed type, use > constm1_rtx instead of const1_rtx for true value. > > --- gcc/expr.c (revision 176517) > +++ gcc/expr.c (working copy) > @@ -9171,7 +9171,9 @@ expand_expr_real_1 (tree exp, rtx target > jumpifnot (exp, op1, -1); > > if (target) > - emit_move_insn (target, const1_rtx); > + emit_move_insn (target, > + TYPE_PRECISION (type) == 1 && !TYPE_UNSIGNED (type) > + ? constm1_rtx : const1_rtx); > > emit_label (op1); > return ignore ? const0_rtx : target; > > Jakub >
