| Message ID | CAEwic4YvxPwFujYeM_FejsaEUCgMH+48p5iLLDqH2D9hGOTvHQ@mail.gmail.com |
|---|---|
| State | New |
| Headers | show |
On Wed, Jul 13, 2011 at 9:36 AM, Kai Tietz <ktietz70@googlemail.com> wrote: > Hello, > > This patch adds support to fold_unary_loc for one-bit precision > typed bitwise-not expression. Similar ... > ChangeLog > > 2011-07-13 Kai Tietz <ktietz@redhat.com> > > * fold-const.c (fold_unary_loc): Add > support for one-bit bitwise-not optimizeation. > > Bootstrapped and regression tested with prior patches of this series > for x86_64-pc-linux-gnu. > Ok for apply? > > Regards, > Kai > > Index: gcc/gcc/fold-const.c > =================================================================== > --- gcc.orig/gcc/fold-const.c 2011-07-13 08:49:50.000000000 +0200 > +++ gcc/gcc/fold-const.c 2011-07-13 08:56:45.170171300 +0200 > @@ -8094,6 +8094,12 @@ fold_unary_loc (location_t loc, enum tre > if (i == count) > return build_vector (type, nreverse (list)); > } > + if (INTEGRAL_TYPE_P (type) && TYPE_PRECISION (type) == 1) > + { > + tem = fold_truth_not_expr (loc, arg0); > + if (tem) > + return fold_convert_loc (loc, type, tem); > + } > > return NULL_TREE; >
Index: gcc/gcc/fold-const.c =================================================================== --- gcc.orig/gcc/fold-const.c 2011-07-13 08:49:50.000000000 +0200 +++ gcc/gcc/fold-const.c 2011-07-13 08:56:45.170171300 +0200 @@ -8094,6 +8094,12 @@ fold_unary_loc (location_t loc, enum tre if (i == count) return build_vector (type, nreverse (list)); } + if (INTEGRAL_TYPE_P (type) && TYPE_PRECISION (type) == 1) + { + tem = fold_truth_not_expr (loc, arg0); + if (tem) + return fold_convert_loc (loc, type, tem); + } return NULL_TREE;