On Wed, 17 Apr 2019, Jeff Law wrote:
* tree.c (get_qualified_type): Put found type variants at the
head of the variant list.
Seems quite reasonable to me. I just hope we don't find a case where
this is the exact worst case behavior ;-)
That seems unlikely. Competitive
On 4/16/19 6:55 AM, Richard Biener wrote:
>
> The following makes the C++ FEs heavy use of build_qualified_type
> cheaper. When looking at a tramp3d -fsyntax-only compile you can
> see that for 470.000 build_qualified_type calls we end up
> with 9.492.205 calls to check_qualified_type (thus we
Hi,
On Tue, 16 Apr 2019, Jakub Jelinek wrote:
> > + if (type1 == type2)
> > +return true;
> > + if (TYPE_MAIN_VARIANT (type1) != TYPE_MAIN_VARIANT (type2))
> > +return false;
>
> Is this second one correct though? Doesn't comptypes return for various
> cases true even if the
Hi,
On Wed, 17 Apr 2019, Richard Biener wrote:
> for the C++ FE the LRU cache effectively moves the unqualified
> variants first in the variant list. Since we always first
> build the unqualified variants before the qualified ones
> the unqualified ones tend to be at the end of the list.
On Tue, 16 Apr 2019, Michael Matz wrote:
> Hi,
>
> On Tue, 16 Apr 2019, Richard Biener wrote:
>
> > Comments?
>
> I was quickly testing also with some early-outs but didn't get conclusive
> performance results (but really only superficial testing) so I'm not
> proposing it, like so:
>
>
On April 16, 2019 6:14:45 PM GMT+02:00, Jakub Jelinek wrote:
>On Tue, Apr 16, 2019 at 04:10:11PM +, Michael Matz wrote:
>> I was quickly testing also with some early-outs but didn't get
>conclusive
>> performance results (but really only superficial testing) so I'm not
>> proposing it, like
On April 16, 2019 6:10:11 PM GMT+02:00, Michael Matz wrote:
>Hi,
>
>On Tue, 16 Apr 2019, Richard Biener wrote:
>
>> Comments?
>
>I was quickly testing also with some early-outs but didn't get
>conclusive
>performance results (but really only superficial testing) so I'm not
>proposing it, like
On Tue, Apr 16, 2019 at 04:10:11PM +, Michael Matz wrote:
> I was quickly testing also with some early-outs but didn't get conclusive
> performance results (but really only superficial testing) so I'm not
> proposing it, like so:
>
> diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
> index
Hi,
On Tue, 16 Apr 2019, Richard Biener wrote:
> Comments?
I was quickly testing also with some early-outs but didn't get conclusive
performance results (but really only superficial testing) so I'm not
proposing it, like so:
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index
The following makes the C++ FEs heavy use of build_qualified_type
cheaper. When looking at a tramp3d -fsyntax-only compile you can
see that for 470.000 build_qualified_type calls we end up
with 9.492.205 calls to check_qualified_type (thus we visit around
20 variant type candidates) ending up
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