From: Martin Liska <mliska@suse.cz>
Date: Sun, 22 Mar 2015 22:50:00 +0000 (+0100)
Subject: Speed-up def_builtin_const (ix86_valid_target_attribute).
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ff2362eb3542969c01b94890b5442932eea8ec88;p=gcc.git

Speed-up def_builtin_const (ix86_valid_target_attribute).

	* config/i386/i386.c (def_builtin): Set deferred_isa_values for
	masks that can potentially include a builtin.
	(ix86_add_new_builtins): Introduce fast filter for isa values
	that cannot trigger builtin inclusion.

From-SVN: r221577
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 36c88ee3499..7e05b814765 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2015-03-22  Martin Liska  <mliska@suse.cz>
+
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	* config/i386/i386.c (def_builtin): Set deferred_isa_values for
+	masks that can potentially include a builtin.
+	(ix86_add_new_builtins): Introduce fast filter for isa values
+	that cannot trigger builtin inclusion.
+
 2015-03-22  Martin Liska  <mliska@suse.cz>
 
 	* ipa-icf.c (sem_item::update_hash_by_addr_refs): New function.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 47deda7ce50..82a48482be6 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -30588,6 +30588,8 @@ struct builtin_isa {
 
 static struct builtin_isa ix86_builtins_isa[(int) IX86_BUILTIN_MAX];
 
+/* Bits that can still enable any inclusion of a builtin.  */
+static HOST_WIDE_INT deferred_isa_values = 0;
 
 /* Add an ix86 target builtin function with CODE, NAME and TYPE.  Save the MASK
    of which isa_flags to use in the ix86_builtins_isa array.  Stores the
@@ -30631,6 +30633,9 @@ def_builtin (HOST_WIDE_INT mask, const char *name,
 	}
       else
 	{
+	  /* Just a MASK where set_and_not_built_p == true can potentially
+	     include a builtin.  */
+	  deferred_isa_values |= mask;
 	  ix86_builtins[(int) code] = NULL_TREE;
 	  ix86_builtins_isa[(int) code].tcode = tcode;
 	  ix86_builtins_isa[(int) code].name = name;
@@ -30666,6 +30671,12 @@ def_builtin_const (HOST_WIDE_INT mask, const char *name,
 static void
 ix86_add_new_builtins (HOST_WIDE_INT isa)
 {
+  if ((isa & deferred_isa_values) == 0)
+    return;
+
+  /* Bits in ISA value can be removed from potential isa values.  */
+  deferred_isa_values &= ~isa;
+
   int i;
   tree saved_current_target_pragma = current_target_pragma;
   current_target_pragma = NULL_TREE;