| Message ID | 87lgh319t8.fsf_-_@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Allow variable-sized temporary variables in gimplify.c | expand |
On Fri, Jan 12, 2018 at 2:33 PM, Richard Sandiford <richard.sandiford@linaro.org> wrote: > This is needed to build libgfortran for SVE. The OpenMP code needs > to create temporary vector variables, and the variables will therefore > be variable-sized for SVE. Earlier patches made such variables work. > > Tested on aarch64-linux-gnu, x86_64-linux-gnu and powerpc64le-linux-gnu. > Also tested by comparing the before-and-after assembly output for at > least one target per CPU directory. OK to install? Ok. Richard. > Thanks, > Richard > > > 2018-01-12 Richard Sandiford <richard.sandiford@linaro.org> > > gcc/ > * gimplify.c (gimple_add_tmp_var_fn): Allow variables to have a > poly_uint64 size, rather than requiring an unsigned HOST_WIDE_INT size. > (gimple_add_tmp_var): Likewise. > > Index: gcc/gimplify.c > =================================================================== > --- gcc/gimplify.c 2018-01-10 08:43:40.053367209 +0000 > +++ gcc/gimplify.c 2018-01-12 12:49:36.756892670 +0000 > @@ -702,7 +702,7 @@ gimple_add_tmp_var_fn (struct function * > /* Later processing assumes that the object size is constant, which might > not be true at this point. Force the use of a constant upper bound in > this case. */ > - if (!tree_fits_uhwi_p (DECL_SIZE_UNIT (tmp))) > + if (!tree_fits_poly_uint64_p (DECL_SIZE_UNIT (tmp))) > force_constant_size (tmp); > > DECL_CONTEXT (tmp) = fn->decl; > @@ -721,7 +721,7 @@ gimple_add_tmp_var (tree tmp) > /* Later processing assumes that the object size is constant, which might > not be true at this point. Force the use of a constant upper bound in > this case. */ > - if (!tree_fits_uhwi_p (DECL_SIZE_UNIT (tmp))) > + if (!tree_fits_poly_uint64_p (DECL_SIZE_UNIT (tmp))) > force_constant_size (tmp); > > DECL_CONTEXT (tmp) = current_function_decl;
Index: gcc/gimplify.c =================================================================== --- gcc/gimplify.c 2018-01-10 08:43:40.053367209 +0000 +++ gcc/gimplify.c 2018-01-12 12:49:36.756892670 +0000 @@ -702,7 +702,7 @@ gimple_add_tmp_var_fn (struct function * /* Later processing assumes that the object size is constant, which might not be true at this point. Force the use of a constant upper bound in this case. */ - if (!tree_fits_uhwi_p (DECL_SIZE_UNIT (tmp))) + if (!tree_fits_poly_uint64_p (DECL_SIZE_UNIT (tmp))) force_constant_size (tmp); DECL_CONTEXT (tmp) = fn->decl; @@ -721,7 +721,7 @@ gimple_add_tmp_var (tree tmp) /* Later processing assumes that the object size is constant, which might not be true at this point. Force the use of a constant upper bound in this case. */ - if (!tree_fits_uhwi_p (DECL_SIZE_UNIT (tmp))) + if (!tree_fits_poly_uint64_p (DECL_SIZE_UNIT (tmp))) force_constant_size (tmp); DECL_CONTEXT (tmp) = current_function_decl;