ArcaneNibble

WCH QingKe RISC-V XW extension opcode encoding

This has been reverse engineered from the toolchain only and has not been tested on hardware.

The c.lbu, c.lhu, c.sb, and c.sh opcodes replace some standard opcodes (that the QingKe cores do not implement, as the replaced opcodes require the D extension), and they also appear to be compatible with "Huawei" extensions mentioned here.

The c.lbusp, c.lhusp, c.sbsp, and c.shsp opcodes exist in a "reserved" opcode block.

001 uimm[0] uimm[4:3] rs1` uimm[2:1] rd`  00			c.lbu		(replacing c.fld)

addyosmani

Problem: How can we preprocess JavaScript (at build-time or on the server-side) so engines like V8 don't have to spend as much time in Parse? This is a topic that involves generating either bytecode or a bytecode-like-abstraction that an engine would need to accept. For folks that don't know, modern web apps typically spend a lot longer in Parsing & Compiling JS than you may think.

• Yoav: This can particularly be an issue on mobile. Same files getting parsed all the time for users. Theoretically if we moved the parsing work to the server-side, we would have to worry about it less.
• One angle to this problem is we all ship too much JavaScript. That's one perspective. We could also look at preprocessing.
• We've been talking about this topic over the last few weeks a bit with V8. There were three main options proposed.
• 1. Similar to what optimize-js does. Identify IIFEs and mark them as such so the browser and VMs heuristics will catch them and do a better job than today. optimize-js only tackles IIFE bu

NocturnDragon

#include <stdio.h>

// #define CLANG_EXTENSION
// Clang compile with -O3

#define VS_EXTENSION
// https://godbolt.org/z/sVWrF4
// Clang  compile with -O3 -fms-compatibility
// VS2017 compile with /O3

flyinprogrammer

#!/bin/bash
# Unmount project
umount /vagrant
# Tell installer to keep en_US
echo en_US > /etc/locale.gen 
# Install localepurge - NO dpkg
apt-get install -y localepurge
localepurge

apt-get remove -y pollinate overlayroot fonts-ubuntu-font-family-console cloud-init python-apport landscape-client juju chef open-vm-tools localepurge

kmichel

#include <iostream>

class DotOp {

};

class LhsDotOp {
	public:
	int value;
	explicit LhsDotOp(int value) : value(value) {}

ssokolow

#!/bin/sh
#
# Simple XDG Install Script for Linux Games
#
# Features:
# - Communicates with the desktop via the xdg-utils vendor integration scripts.
#   (No need to upgrade if the implementation details change.)
# - Icons are resolved via the desktop theming system, granting theme
#   developers the ability to provide customized versions which preserve the
#   overall system aesthetic.

adamloving

0-mail.com
0815.ru
0clickemail.com
0wnd.net
0wnd.org
10minutemail.com
20minutemail.com
2prong.com
30minutemail.com
3d-painting.com

lambdaman2

# weird way to represent \'  // exit using ctrl-D
alias sharecode='curl -si -F '\''content=<-'\'' http://dpaste.com/api/v1/ | grep ^Location: | colrm 1 10'

ssokolow

#!/bin/sh
# dash-Compatible Linux Configuration Dumper for Troubleshooting Games
# (Sort of like DxDiag but for Linux)
#
# Get and contribute updates to this script at: https://gist.github.com/3759156
#
# NOTE: Please test changes on as many of the following shells as possible:
#  dash, bash, pdksh, busybox, ash, zsh
#
# TODO:

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD