openmp: Fix signed/unsigned warning

My previous patch broke things when building with Werror.

gcc/ChangeLog:

	* omp-general.cc (omp_max_vf): Cast the constant to poly_uint64.

diff --git a/gcc/omp-general.cc b/gcc/omp-general.cc
index 1ae575ee181f6fd5b4d18153703f07eae9412c92..72fb7f92ff707951b9467a6c26e92a29ee25c403 100644 (file)
--- a/gcc/omp-general.cc
+++ b/gcc/omp-general.cc
@@ -1005,7 +1005,7 @@ omp_max_vf (bool offload)
       for (const char *c = getenv ("OFFLOAD_TARGET_NAMES"); c;)
        {
          if (startswith (c, "amdgcn"))
-           return ordered_max (64, omp_max_vf (false));
+           return ordered_max (poly_uint64 (64), omp_max_vf (false));
          else if ((c = strchr (c, ':')))
            c++;
        }