https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81706
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The C/C++ FE change would be something like:
--- gcc/tree.c.jj 2017-07-29 09:48:40.000000000 +0200
+++ gcc/tree.c 2017-08-04 12:06:35.636072718 +0200
@@ -5022,8 +5022,8 @@ attribute_value_equal (const_tree attr1,
TREE_VALUE (attr2)) == 1);
}
- if ((flag_openmp || flag_openmp_simd)
- && TREE_VALUE (attr1) && TREE_VALUE (attr2)
+ if (TREE_VALUE (attr1)
+ && TREE_VALUE (attr2)
&& TREE_CODE (TREE_VALUE (attr1)) == OMP_CLAUSE
&& TREE_CODE (TREE_VALUE (attr2)) == OMP_CLAUSE)
return omp_declare_simd_clauses_equal (TREE_VALUE (attr1),
--- gcc/cp/decl.c.jj 2017-08-01 19:23:10.000000000 +0200
+++ gcc/cp/decl.c 2017-08-04 12:44:44.773780568 +0200
@@ -2456,6 +2456,35 @@ next_arg:;
break;
}
}
+
+ tree s = lookup_attribute ("omp declare simd",
+ DECL_ATTRIBUTES (newdecl));
+ if (s)
+ {
+ tree b = builtin_decl_explicit (DECL_FUNCTION_CODE (newdecl));
+ if (b)
+ {
+ tree s2 = lookup_attribute ("omp declare simd",
+ DECL_ATTRIBUTES (b));
+ while (s)
+ {
+ tree s3;
+ for (s3 = s2; s3;
+ s3 = lookup_attribute ("omp declare simd",
+ TREE_CHAIN (s3)))
+ if (attribute_value_equal (s, s3))
+ break;
+ if (!s3)
+ {
+ s3 = copy_node (s);
+ TREE_CHAIN (s3) = DECL_ATTRIBUTES (b);
+ DECL_ATTRIBUTES (b) = s3;
+ }
+ s = lookup_attribute ("omp declare simd",
+ TREE_CHAIN (s));
+ }
+ }
+ }
}
if (new_defines_function)
/* If defining a function declared with other language
--- gcc/c/c-decl.c.jj 2017-07-31 11:31:15.000000000 +0200
+++ gcc/c/c-decl.c 2017-08-04 12:39:48.113226134 +0200
@@ -2566,6 +2566,36 @@ merge_decls (tree newdecl, tree olddecl,
set_builtin_decl_declared_p (fncode, true);
break;
}
+
+ tree s = lookup_attribute ("omp declare simd",
+ DECL_ATTRIBUTES (newdecl));
+ if (s)
+ {
+ tree b
+ = builtin_decl_explicit (DECL_FUNCTION_CODE (newdecl));
+ if (b)
+ {
+ tree s2 = lookup_attribute ("omp declare simd",
+ DECL_ATTRIBUTES (b));
+ while (s)
+ {
+ tree s3;
+ for (s3 = s2; s3;
+ s3 = lookup_attribute ("omp declare simd",
+ TREE_CHAIN (s3)))
+ if (attribute_value_equal (s, s3))
+ break;
+ if (!s3)
+ {
+ tree s3 = copy_node (s);
+ TREE_CHAIN (s3) = DECL_ATTRIBUTES (b);
+ DECL_ATTRIBUTES (b) = s3;
+ }
+ s = lookup_attribute ("omp declare simd",
+ TREE_CHAIN (s));
+ }
+ }
+ }
}
}
else
and has the advantage that any other uses of __builtin_* would work that way.
As for the libstdc++-v3 patch, why is it incomplete? I've just changed the
cases where glibc has
routines with simd attribute (which is only for float/double routines, not for
long double, and
only those changed in the patch).
