On Tue, 24 Sept 2024, 21:43 Jason Merrill, wrote:
> On 9/24/24 7:51 AM, Jason Merrill wrote:
> > Tested x86_64-pc-linux-gnu.
> >
> > Is this the right fix, or do we want to stop using these deprecated
> classes,
> > here and in stl_function.h?
>
We can't stop using them in stl_function.h for ABI
On 9/24/24 7:51 AM, Jason Merrill wrote:
Tested x86_64-pc-linux-gnu.
Is this the right fix, or do we want to stop using these deprecated classes,
here and in stl_function.h?
Oops, adding libstdc++ CC.
-- 8< --
The CI saw failures on 17_intro/headers/c++2011/parallel_mode.cc due to
-Wdepreca
Thanks Jonathan.
Here are some benchmarks (assembly in [1]):
https://quick-bench.com/q/jclBXmi4QLDcRMLuuVpxTUsFmQw
Unfortunately, quick-bench times out unless some implementations are
commented out. You can copy the code and run it locally (needs google
benchmark) to get the full picture.
I real
On 23/06/21 18:51 +0100, Jonathan Wakely wrote:
Here's what I've committed. Tested x86_64-linux and powerpc64le-linux.
Pushed to trunk.
commit b92d12d3fe3f1aa56d190d960e40c62869a6cfbb
Author: Cassio Neri
Date: Wed Jun 23 15:32:16 2021
libstdc++: More efficient std::chrono::year::leap
On 23/06/21 14:16 +0100, Jonathan Wakely wrote:
On 23/06/21 12:45 +0100, Jonathan Wakely wrote:
On 21/05/21 19:44 +0100, Cassio Neri via Libstdc++ wrote:
I've checked the generated code and the compiler doesn't figure out
the logic. I added a comment to explain.
(Revised patch below and attach
On 23/06/21 12:45 +0100, Jonathan Wakely wrote:
On 21/05/21 19:44 +0100, Cassio Neri via Libstdc++ wrote:
I've checked the generated code and the compiler doesn't figure out
the logic. I added a comment to explain.
(Revised patch below and attached.)
Best wishes,
Cassio.
---
Simple change to
On 21/05/21 19:44 +0100, Cassio Neri via Libstdc++ wrote:
I've checked the generated code and the compiler doesn't figure out
the logic. I added a comment to explain.
(Revised patch below and attached.)
Best wishes,
Cassio.
---
Simple change to std::chrono::year::is_leap. If a year is multipl
I've checked the generated code and the compiler doesn't figure out
the logic. I added a comment to explain.
(Revised patch below and attached.)
Best wishes,
Cassio.
---
Simple change to std::chrono::year::is_leap. If a year is multiple of 100,
then it's divisible by 400 if and only if it's div
> On May 21, 2021, at 1:46 PM, Cassio Neri via Gcc-patches
> wrote:
>
> Simple change to std::chrono::year::is_leap. If a year is multiple of 100,
> then it's divisible by 400 if and only if it's divisible by 16. The latter
> allows for better code generation.
I wonder if the optimizer could
I have a patch for the same location so here is my remark that might
make my patch useless.
Maybe you can even merge it with yours Ed, here it is:
https://gcc.gnu.org/ml/libstdc++/2019-10/msg00072.html
On 11/25/19 10:15 PM, Jonathan Wakely wrote:
On 15/11/19 22:17 -0500, Ed Smith-Rowland via
On 15/11/19 22:17 -0500, Ed Smith-Rowland via libstdc++ wrote:
Index: include/bits/stl_algobase.h
===
--- include/bits/stl_algobase.h (revision 278318)
+++ include/bits/stl_algobase.h (working copy)
@@ -107,6 +107,50 @@
}
/*
+
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