tree-inline.h (eni_weights): Add field target_builtin_cost to reflect the cost…

tree-inline.h (eni_weights): Add field target_builtin_cost to reflect the cost per call to a target specific...

2007-09-24  Pranav Bhandarkar  <pranav.bhandarkar@celunite.com>
        Ramana Radhakrishnan  <ramana@hercules.pun.celunite.com>

        * tree-inline.h (eni_weights): Add field target_builtin_cost to
        reflect the cost per call to a target specific builtin.
        * tree-inline.c (estimate_num_insns_1): If it is a CALL_EXPR for
        * a
        call to a target specific builtin, then use
target_builtin_call_cost.
        (init_inline_once): Initialize target_builtin_call_cost field.

Co-Authored-By: Ramana Radhakrishnan <ramana@hercules.pun.celunite.com>

From-SVN: r128714

gcc/ChangeLog

+2007-09-24  Pranav Bhandarkar  <pranav.bhandarkar@celunite.com>
+	Ramana Radhakrishnan  <ramana@hercules.pun.celunite.com>
+
+	* tree-inline.h (eni_weights): Add field target_builtin_cost to
+	reflect the cost per call to a target specific builtin.
+	* tree-inline.c (estimate_num_insns_1): If it is a CALL_EXPR for a
+	call to a target specific builtin, then use target_builtin_call_cost.
+	(init_inline_once): Initialize target_builtin_call_cost field.
+
 2007-09-24  Kai Tietz  <kai.tietz@onevision.com>
 
 	PR middle-end/33472

gcc/tree-inline.c

@@ -2290,7 +2290,11 @@ estimate_num_insns_1 (tree *tp, int *walk_subtrees, void *data)
       {
 	tree decl = get_callee_fndecl (x);
 
+	if (decl && DECL_BUILT_IN_CLASS (decl) == BUILT_IN_MD)
+	  cost = d->weights->target_builtin_call_cost;
+	else
 	  cost = d->weights->call_cost;
+	
 	if (decl && DECL_BUILT_IN_CLASS (decl) == BUILT_IN_NORMAL)
 	  switch (DECL_FUNCTION_CODE (decl))
 	    {
@@ -2391,11 +2395,13 @@ void
 init_inline_once (void)
 {
   eni_inlining_weights.call_cost = PARAM_VALUE (PARAM_INLINE_CALL_COST);
+  eni_inlining_weights.target_builtin_call_cost = 1;
   eni_inlining_weights.div_mod_cost = 10;
   eni_inlining_weights.switch_cost = 1;
   eni_inlining_weights.omp_cost = 40;
 
   eni_size_weights.call_cost = 1;
+  eni_size_weights.target_builtin_call_cost = 1;
   eni_size_weights.div_mod_cost = 1;
   eni_size_weights.switch_cost = 10;
   eni_size_weights.omp_cost = 40;
@@ -2405,6 +2411,7 @@ init_inline_once (void)
      underestimating the cost does less harm than overestimating it, so
      we choose a rather small value here.  */
   eni_time_weights.call_cost = 10;
+  eni_time_weights.target_builtin_call_cost = 10;
   eni_time_weights.div_mod_cost = 10;
   eni_time_weights.switch_cost = 4;
   eni_time_weights.omp_cost = 40;

gcc/tree-inline.h

@@ -103,6 +103,9 @@ typedef struct eni_weights_d
   /* Cost per call.  */
   unsigned call_cost;
 
+  /* Cost per call to a target specific builtin */
+  unsigned target_builtin_call_cost;
+
   /* Cost of "expensive" div and mod operations.  */
   unsigned div_mod_cost;