rs6000: Fix GC on rs6000.c decls for atomic handling (PR88134)

In PR88134 it is pointed out that we do not have GTY markup for some
variables we use for atomic.  So, let's add that.

2022-02-22  Segher Boessenkool  <segher@kernel.crashing.org>

	PR target/88134
	* config/rs6000/rs6000.cc (atomic_hold_decl, atomic_clear_decl,
	atomic_update_decl): Add GTY markup.

diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index ca9e7b80dcbfe61a2775ab51d93b14b3dd0123e1..a855e8c4c72aa6343a24931daf34db60d70a4681 100644 (file)
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -27699,14 +27699,13 @@ emit_fusion_gpr_load (rtx target, rtx mem)
   return "";
 }
 \f
-
-#ifdef RS6000_GLIBC_ATOMIC_FENV
-/* Function declarations for rs6000_atomic_assign_expand_fenv.  */
-static tree atomic_hold_decl, atomic_clear_decl, atomic_update_decl;
-#endif
+/* This is not inside an  #ifdef RS6000_GLIBC_ATOMIC_FENV  because gengtype
+   ignores it then.  */
+static GTY(()) tree atomic_hold_decl;
+static GTY(()) tree atomic_clear_decl;
+static GTY(()) tree atomic_update_decl;
 
 /* Implement TARGET_ATOMIC_ASSIGN_EXPAND_FENV hook.  */
-
 static void
 rs6000_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update)
 {