> gcc/ChangeLog:
>
> 2015-03-20 Martin Liska
> Jakub Jelinek
>
> * 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 tri
more.
Jakub
Thank you Jakub for smart 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
Date: Fri, 20 Mar
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 =
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 (HOST_WIDE_IN
> 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)
> >>
On 03/13/2015 05:42 AM, Jan Hubicka wrote:
2015-03-09 Martin Liska
* 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
> 2015-03-09 Martin Liska
>
> * 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 passed value is equ
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 d
