[PATCH][3/5] Factor optimize_va_list_gpr_fpr_size out of pass_stdarg::execute

[Tom de Vries <Tom_deVries at mentor dot com>]

On 19-02-15 11:29, Tom de Vries wrote:
> Hi,
>
> I'm posting this patch series for stage1:
> - 0001-Disable-lang_hooks.gimplify_expr-in-free_lang_data.patch
> - 0002-Add-gimple_find_sub_bbs.patch
> - 0003-Factor-optimize_va_list_gpr_fpr_size-out-of-pass_std.patch
> - 0004-Handle-internal_fn-in-operand_equal_p.patch
> - 0005-Postpone-expanding-va_arg-until-pass_stdarg.patch
>
> The patch series - based on Michael's initial patch - postpones expanding va_arg
> until pass_stdarg, which makes pass_stdarg more robust.
>
> Bootstrapped and reg-tested on x86_64 using all languages, with unix/ and
> unix/-m32 testing.
>
> I'll post the patches in reply to this email.

This patch factors optimize_va_list_gpr_fpr_size out of pass_stdarg::execute.

Now that we're adding more functionality in pass_stdarg, it's cleaner and 
clearer to move the optimization to its own function.

OK for stage1?

Thanks,
- Tom

2015-02-17  Tom de Vries  <tom@codesourcery.com>

	* tree-stdarg.c (optimize_va_list_gpr_fpr_size): Factor out of ...
	(pass_stdarg::execute): ... here.
---
 gcc/tree-stdarg.c | 80 ++++++++++++++++++++++++++++++-------------------------
 1 file changed, 44 insertions(+), 36 deletions(-)

diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c
index 17d51a2..5eac56a 100644
--- a/gcc/tree-stdarg.c
+++ b/gcc/tree-stdarg.c
@@ -678,43 +678,10 @@ check_all_va_list_escapes (struct stdarg_info *si)
   return false;
 }
 
+/* Optimize FUN->va_list_gpr_size and FUN->va_list_fpr_size.  */
 
-namespace {
-
-const pass_data pass_data_stdarg =
-{
-  GIMPLE_PASS, /* type */
-  "stdarg", /* name */
-  OPTGROUP_NONE, /* optinfo_flags */
-  TV_NONE, /* tv_id */
-  ( PROP_cfg | PROP_ssa ), /* properties_required */
-  0, /* properties_provided */
-  0, /* properties_destroyed */
-  0, /* todo_flags_start */
-  0, /* todo_flags_finish */
-};
-
-class pass_stdarg : public gimple_opt_pass
-{
-public:
-  pass_stdarg (gcc::context *ctxt)
-    : gimple_opt_pass (pass_data_stdarg, ctxt)
-  {}
-
-  /* opt_pass methods: */
-  virtual bool gate (function *fun)
-    {
-      return (flag_stdarg_opt
-	      /* This optimization is only for stdarg functions.  */
-	      && fun->stdarg != 0);
-    }
-
-  virtual unsigned int execute (function *);
-
-}; // class pass_stdarg
-
-unsigned int
-pass_stdarg::execute (function *fun)
+static void
+optimize_va_list_gpr_fpr_size (function *fun)
 {
   basic_block bb;
   bool va_list_escapes = false;
@@ -1047,6 +1014,47 @@ finish:
 	fprintf (dump_file, "%d", cfun->va_list_fpr_size);
       fputs (" FPR units.\n", dump_file);
     }
+}
+
+namespace {
+
+const pass_data pass_data_stdarg =
+{
+  GIMPLE_PASS, /* type */
+  "stdarg", /* name */
+  OPTGROUP_NONE, /* optinfo_flags */
+  TV_NONE, /* tv_id */
+  ( PROP_cfg | PROP_ssa ), /* properties_required */
+  0, /* properties_provided */
+  0, /* properties_destroyed */
+  0, /* todo_flags_start */
+  0, /* todo_flags_finish */
+};
+
+class pass_stdarg : public gimple_opt_pass
+{
+public:
+  pass_stdarg (gcc::context *ctxt)
+    : gimple_opt_pass (pass_data_stdarg, ctxt)
+  {}
+
+  /* opt_pass methods: */
+  virtual bool gate (function *fun)
+    {
+      return (flag_stdarg_opt
+	      /* This optimization is only for stdarg functions.  */
+	      && fun->stdarg != 0);
+    }
+
+  virtual unsigned int execute (function *);
+
+}; // class pass_stdarg
+
+unsigned int
+pass_stdarg::execute (function *fun)
+{
+  optimize_va_list_gpr_fpr_size (fun);
+
   return 0;
 }
 
-- 
1.9.1