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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/105353] __builtin_shufflevector with value dependent constant
Date: Fri, 22 Apr 2022 22:04:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105353

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Good point, I suppose this is better:

--- a/gcc/cp/typeck.cc
+++ b/gcc/cp/typeck.cc
@@ -6315,7 +6315,9 @@ build_x_shufflevector (location_t loc, vec<tree, va_g=
c>
*args,
   if (processing_template_decl)
     {
       for (unsigned i =3D 0; i < args->length (); ++i)
-   if (type_dependent_expression_p ((*args)[i]))
+   if (i <=3D 1
+       ? type_dependent_expression_p ((*args)[i])
+       : instantiation_dependent_expression_p ((*args)[i]))
      {
        tree exp =3D build_min_nt_call_vec (NULL, args);
        CALL_EXPR_IFN (exp) =3D IFN_SHUFFLEVECTOR;=