On 03/20/2015 01:10 AM, Jan Hubicka wrote:
Hi.
Explanation of the patch is introduced.
thanks
mask = ~OPTION_MASK_ISA_64BIT;
if (mask == 0
@@ -30670,6 +30673,14 @@ def_builtin_const (HOST_WIDE_INT mask, const char
*name,
static void
ix86_add_new_builtins
On Fri, Mar 20, 2015 at 11:33:09AM +0100, Martin Liška wrote:
@@ -30670,6 +30673,20 @@ def_builtin_const (HOST_WIDE_INT mask, const char
*name,
static void
ix86_add_new_builtins (HOST_WIDE_INT isa)
{
+ /* Last cached isa value. */
+ static HOST_WIDE_INT last_tested_isa_value = 0;
+
solution.
I've just implemented new patch, which I've been testing.
What do you think about it?
Martin
From 3469163018d3c8ad2849bb9d241e12ae8723da90 Mon Sep 17 00:00:00 2001
From: mliska mli...@suse.cz
Date: Fri, 20 Mar 2015 14:51:47 +0100
Subject: [PATCH] Speed-up def_builtin_const
gcc/ChangeLog:
2015-03-20 Martin Liska mli...@suse.cz
Jakub Jelinek ja...@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
Hi.
Explanation of the patch is introduced.
thanks
mask = ~OPTION_MASK_ISA_64BIT;
if (mask == 0
@@ -30670,6 +30673,14 @@ def_builtin_const (HOST_WIDE_INT mask, const char
*name,
static void
ix86_add_new_builtins (HOST_WIDE_INT isa)
{
+ /* Last cached isa
On 03/13/2015 05:42 AM, Jan Hubicka wrote:
2015-03-09 Martin Liska marxin.li...@gmail.com
* config/i386/i386.c (def_builtin): Collect union of all
possible masks.
(ix86_add_new_builtins): Do not iterate over all builtins
in cases that isa value has no
2015-03-09 Martin Liska marxin.li...@gmail.com
* config/i386/i386.c (def_builtin): Collect union of all
possible masks.
(ix86_add_new_builtins): Do not iterate over all builtins
in cases that isa value has no intersection with possible masks
and(or) last
Hello.
During compilation of Chromium project, I noticed (perf top) that
ix86_valid_target_attribute is utilized by about 0.8-1.9%.
Following patch introduces simple optimization that reduces the utilization to
~0.05%.
Tests have been running on x86_64-linux-pc.
Ready for trunk?
Martin
From