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New posts in x86
SIMD instructions lowering CPU frequency
Mar 08, 2021
optimization
x86
intel
compiler-optimization
avx512
What does the MOVZBL instruction do in IA-32 AT&T syntax?
Aug 09, 2022
assembly
x86
att
zero-extension
Why is such complex code emitted for dividing a signed integer by a power of two?
Oct 12, 2022
c++
visual-c++
assembly
x86
division
Why does Intel's compiler prefer NEG+ADD over SUB?
Aug 29, 2022
assembly
x86
micro-optimization
icc
What does the dollar sign ($) mean in x86 assembly when calculating string lengths like "$ - label"? [duplicate]
Aug 29, 2022
assembly
x86
intel-syntax
Writing my own BIOS
Aug 17, 2022
assembly
x86
bios
What was the original reason for the design of AT&T assembly syntax?
Aug 29, 2022
assembly
x86
intel
att
MASM/NASM Differences
Feb 15, 2019
assembly
x86
nasm
masm
Cannot write to screen memory in C
Sep 11, 2022
c
x86
x86-16
turbo-c
real-mode
INC instruction vs ADD 1: Does it matter?
Aug 29, 2022
performance
assembly
x86
increment
micro-optimization
Porting 32 bit C++ code to 64 bit - is it worth it? Why?
Aug 29, 2022
c++
x86
64-bit
x86-64
cpu-architecture
How to get the CPU cycle count in x86_64 from C++?
Sep 20, 2022
c++
c
performance
x86
rdtsc
How does x86 pause instruction work in spinlock *and* can it be used in other scenarios?
Dec 27, 2017
multithreading
x86
cpu-architecture
instructions
spinlock
Effective optimization strategies on modern C++ compilers
Aug 29, 2022
c++
optimization
x86
How are x86 uops scheduled, exactly?
Apr 07, 2022
performance
optimization
x86
intel
cpu-architecture
Is x86 RISC or CISC? [closed]
Aug 28, 2022
x86
cpu
cpu-architecture
The difference between Call Gate, Interrupt Gate, Trap Gate?
Aug 28, 2022
x86
operating-system
cpu
interrupt
processor
explanation about push ebp and pop ebp instruction in assembly
Aug 28, 2022
assembly
x86
callstack
stack-frame
How do AX, AH, AL map onto EAX?
Aug 28, 2022
assembly
x86
cpu-registers
Boolean values as 8 bit in compilers. Are operations on them inefficient?
Aug 28, 2022
c++
c
optimization
x86
boolean
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